Medical College of Wisconsin
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X Allen Li PhD

X Allen Li PhD

Professor

Institution: Medical College of Wisconsin
Department: Radiation Oncology
Program: Physics

Member of the Cancer Center


Leadership Positions

  • Chief of Medical Physics, Department of Radiation Oncology
  • Publications

  • Technical Note: Acceleration of online adaptive replanning with automation and parallel operations. (Zhang J, Ahunbay E, Li XA) Med Phys 2018 Oct;45(10):4370-4376 PMID: 30053325 07/28/2018    
  • Feasibility of real-time lung tumor motion monitoring using intrafractional ultrasound and kV cone beam projection images. (Mostafaei F, Tai A, Gore E, Johnstone C, Haase W, Ehlers C, Cooper DT, Lachaine M, Li XA) Med Phys 2018 Oct;45(10):4619-4626 PMID: 30047160 07/27/2018       1 Citations
  • PET-based Treatment Response Assessment for Neoadjuvant Chemoradiation in Pancreatic Adenocarcinoma: An Exploratory Study. (Dalah E, Tai A, Oshima K, Hall WA, Erickson B, Li XA) Transl Oncol 2018 Oct;11(5):1104-1109 PMID: 30015263 PMCID: PMC6070701 07/18/2018    
  • Technical Note: Enhancing soft tissue contrast and radiation-induced image changes with dual-energy CT for radiation therapy. (Noid G, Tai A, Schott D, Mistry N, Liu Y, Gilat-Schmidt T, Robbins JR, Li XA) Med Phys 2018 Jul 04 PMID: 29972868 07/05/2018    
  • Early Prediction of Acute Xerostomia During Radiation Therapy for Head and Neck Cancer Based on Texture Analysis of Daily CT. (Wu H, Chen X, Yang X, Tao Y, Xia Y, Deng X, Zheng C, Robbins J, Schultz C, Li XA) Int J Radiat Oncol Biol Phys 2018 Nov 15;102(4):1308-1318 PMID: 29891201 06/13/2018       1 Citations
  • Appropriate magnetic resonance imaging techniques for gross tumor volume delineation in external beam radiation therapy of locally advanced cervical cancer. (Song Y, Erickson B, Chen X, Li G, Wu G, Paulson E, Knechtges P, Li XA) Oncotarget 2018 Feb 09;9(11):10100-10109 PMID: 29515794 PMCID: PMC5839375 03/09/2018    
  • Correlation of ADC With Pathological Treatment Response for Radiation Therapy of Pancreatic Cancer. (Dalah E, Erickson B, Oshima K, Schott D, Hall WA, Paulson E, Tai A, Knechtges P, Li XA) Transl Oncol 2018 Apr;11(2):391-398 PMID: 29455085 PMCID: PMC5852406 02/20/2018    
  • A fast 4D IMRT/VMAT planning method based on segment aperture morphing. (Klawikowski S, Tai A, Ates O, Ahunbay E, Li XA) Med Phys 2018 Apr;45(4):1594-1602 PMID: 29394460 02/03/2018    
  • Magnetic Resonance Imaging-Guided Adaptive Radiation Therapy: A "Game Changer" for Prostate Treatment? (Pathmanathan AU, van As NJ, Kerkmeijer LGW, Christodouleas J, Lawton CAF, Vesprini D, van der Heide UA, Frank SJ, Nill S, Oelfke U, van Herk M, Li XA, Mittauer K, Ritter M, Choudhury A, Tree AC) Int J Radiat Oncol Biol Phys 2018 Feb 01;100(2):361-373 PMID: 29353654 01/23/2018    
  • Anatomic, functional and molecular imaging in lung cancer precision radiation therapy: treatment response assessment and radiation therapy personalization. (MacManus M, Everitt S, Schimek-Jasch T, Li XA, Nestle U, Kong FS) Transl Lung Cancer Res 2017 Dec;6(6):670-688 PMID: 29218270 PMCID: PMC5709137 12/09/2017    
  • Reducing radiation dose and enhancing imaging quality of 4DCT for radiation therapy using iterative reconstruction algorithms. (Noid G, Tai A, Chen GP, Robbins J, Li XA) Adv Radiat Oncol 2017 Jul-Sep;2(3):515-521 PMID: 29114620 PMCID: PMC5605285 11/09/2017    
  • Precision Oncology and Genomically Guided Radiation Therapy: A Report From the American Society for Radiation Oncology/American Association of Physicists in Medicine/National Cancer Institute Precision Medicine Conference. (Hall WA, Bergom C, Thompson RF, Baschnagel AM, Vijayakumar S, Willers H, Li XA, Schultz CJ, Wilson GD, West CML, Capala J, Coleman CN, Torres-Roca JF, Weidhaas J, Feng FY) Int J Radiat Oncol Biol Phys 2018 Jun 01;101(2):274-284 PMID: 28964588 10/02/2017    
  • Assessment of treatment response during chemoradiation therapy for pancreatic cancer based on quantitative radiomic analysis of daily CTs: An exploratory study. (Chen X, Oshima K, Schott D, Wu H, Hall W, Song Y, Tao Y, Li D, Zheng C, Knechtges P, Erickson B, Li XA) PLoS One 2017;12(6):e0178961 PMID: 28575105 PMCID: PMC5456365 06/03/2017       5 Citations
  • Early Assessment of Treatment Responses During Radiation Therapy for Lung Cancer Using Quantitative Analysis of Daily Computed Tomography. (Paul J, Yang C, Wu H, Tai A, Dalah E, Zheng C, Johnstone C, Kong FM, Gore E, Li XA) Int J Radiat Oncol Biol Phys 2017 06 01;98(2):463-472 PMID: 28463166 05/04/2017       4 Citations
  • Technical Note: Is bulk electron density assignment appropriate for MRI-only based treatment planning for lung cancer? (Prior P, Chen X, Gore E, Johnstone C, Li XA) Med Phys 2017 Jul;44(7):3437-3443 PMID: 28391596 04/10/2017       1 Citations
  • Recommendations for MRI-based contouring of gross tumor volume and organs at risk for radiation therapy of pancreatic cancer. (Heerkens HD, Hall WA, Li XA, Knechtges P, Dalah E, Paulson ES, van den Berg CA, Meijer GJ, Koay EJ, Crane CH, Aitken K, van Vulpen M, Erickson BA) Pract Radiat Oncol 2017 Mar - Apr;7(2):126-136 PMID: 28089481 01/17/2017       5 Citations
  • SU-F-T-525: Monitordeep-Inspiratory Breathhold with a Laser Sensor for Radiation Therapy of Left Breast Cancer. (Tai A, Li DJ, Currey A, Li XA) Med Phys 2016 Jun;43(6):3584 PMID: 28048276 01/04/2017    
  • SU-G-JeP2-05: Dose Effects of a 1.5T Magnetic Field On Air-Tissue and Lung-Tissue Interfaces in MRI-Guided Radiotherapy. (Chen X, Prior P, Chen G, Schultz C, Li XA) Med Phys 2016 Jun;43(6):3660 PMID: 28047704 01/04/2017    
  • Tumor control probability modeling for stereotactic body radiation therapy of early-stage lung cancer using multiple bio-physical models. (Liu F, Tai A, Lee P, Biswas T, Ding GX, El Naqa I, Grimm J, Jackson A, Kong FS, LaCouture T, Loo B Jr, Miften M, Solberg T, Li XA) Radiother Oncol 2017 02;122(2):286-294 PMID: 27871671 PMCID: PMC5649355 11/23/2016       10 Citations
  • Management of independent motion between multiple targets in lung cancer radiation therapy. (Liu F, Tai A, Ahunbay E, Gore E, Johnstone C, Li XA) Pract Radiat Oncol 2017 Jan - Feb;7(1):26-34 PMID: 27742559 10/16/2016    
  • Clinical experience with planning, quality assurance, and delivery of burst-mode modulated arc therapy. (Kainz K, Prah D, Ahunbay E, Li XA) J Appl Clin Med Phys 2016 09 08;17(5):47-59 PMID: 27685123 PMCID: PMC5874115 09/30/2016    
  • Preliminary results on the feasibility of using ultrasound to monitor intrafractional motion during radiation therapy for pancreatic cancer. (Omari EA, Erickson B, Ehlers C, Quiroz F, Noid G, Cooper DT, Lachaine M, Li XA) Med Phys 2016 Sep;43(9):5252 PMID: 27587056 09/03/2016       8 Citations
  • An online replanning method using warm start optimization and aperture morphing for flattening-filter-free beams. (Ahunbay EE, Ates O, Li XA) Med Phys 2016 Aug;43(8):4575 PMID: 27487874 08/05/2016       6 Citations
  • Technical Note: Dose effects of 1.5 T transverse magnetic field on tissue interfaces in MRI-guided radiotherapy. (Chen X, Prior P, Chen GP, Schultz CJ, Li XA) Med Phys 2016 Aug;43(8):4797 PMID: 27487897 08/05/2016       6 Citations
  • Simple Factors Associated With Radiation-Induced Lung Toxicity After Stereotactic Body Radiation Therapy of the Thorax: A Pooled Analysis of 88 Studies. (Zhao J, Yorke ED, Li L, Kavanagh BD, Li XA, Das S, Miften M, Rimner A, Campbell J, Xue J, Jackson A, Grimm J, Milano MT, Spring Kong FM) Int J Radiat Oncol Biol Phys 2016 08 01;95(5):1357-1366 PMID: 27325482 PMCID: PMC5541363 06/22/2016       33 Citations
  • Technical Note: A fast online adaptive replanning method for VMAT using flattening filter free beams. (Ates O, Ahunbay EE, Moreau M, Li XA) Med Phys 2016 Jun;43(6):2756-2764 PMID: 27277022 06/10/2016       6 Citations
  • MRI-guided prostate adaptive radiotherapy - A systematic review. (McPartlin AJ, Li XA, Kershaw LE, Heide U, Kerkmeijer L, Lawton C, Mahmood U, Pos F, van As N, van Herk M, Vesprini D, van der Voort van Zyp J, Tree A, Choudhury A, MR-Linac consortium) Radiother Oncol 2016 06;119(3):371-80 PMID: 27162159 05/11/2016       34 Citations
  • An analysis of tumor control probability of stereotactic body radiation therapy for lung cancer with a regrowth model. (Tai A, Liu F, Gore E, Li XA) Phys Med Biol 2016 05 21;61(10):3903-13 PMID: 27117498 04/28/2016       5 Citations
  • MRI-based IMRT planning for MR-linac: comparison between CT- and MRI-based plans for pancreatic and prostate cancers. (Prior P, Chen X, Botros M, Paulson ES, Lawton C, Erickson B, Li XA) Phys Med Biol 2016 05 21;61(10):3819-42 PMID: 27089554 04/19/2016       13 Citations
  • Technical Note: Development and performance of a software tool for quality assurance of online replanning with a conventional Linac or MR-Linac. (Chen GP, Ahunbay E, Li XA) Med Phys 2016 Apr;43(4):1713 PMID: 27036569 04/03/2016       7 Citations
  • Radiation-induced CT number changes in GTV and parotid glands during the course of radiation therapy for nasopharyngeal cancer. (Xu S, Wu Z, Yang C, Ma L, Qu B, Chen G, Yao W, Wang S, Liu Y, Li XA) Br J Radiol 2016 Jun;89(1062):20140819 PMID: 27033059 PMCID: PMC5258137 04/02/2016       3 Citations
  • A Comparison of Lumpectomy Cavity Delineations Between Use of Magnetic Resonance Imaging and Computed Tomography Acquired With Patient in Prone Position for Radiation Therapy Planning of Breast Cancer. (Huang W, Currey A, Chen X, Li B, Bergom C, Kelly T, Wilson JF, Li XA) Int J Radiat Oncol Biol Phys 2016 Mar 15;94(4):832-40 PMID: 26972656 03/15/2016       4 Citations
  • Margin reduction from image guided radiation therapy for soft tissue sarcoma: Secondary analysis of Radiation Therapy Oncology Group 0630 results. (Li XA, Chen X, Zhang Q, Kirsch DG, Petersen I, DeLaney TF, Freeman CR, Trotti A, Hitchcock Y, Bedi M, Haddock M, Salerno K, Dundas G, Wang D) Pract Radiat Oncol 2016 Jul-Aug;6(4):e135-40 PMID: 26852173 PMCID: PMC4870138 02/08/2016       2 Citations
  • Sensorineural Hearing Loss after Combined Intensity Modulated Radiation Therapy and Cisplatin-Based Chemotherapy for Nasopharyngeal Carcinoma. (Wang J, Chen YY, Tai A, Chen XL, Huang SM, Yang C, Bao Y, Li NW, Deng XW, Zhao C, Chen M, Li XA) Transl Oncol 2015 Dec;8(6):456-62 PMID: 26692526 PMCID: PMC4700287 12/23/2015    
  • Gradient maintenance: A new algorithm for fast online replanning. (Ahunbay EE, Li XA) Med Phys 2015 Jun;42(6):2863-76 PMID: 26127039 07/02/2015       4 Citations
  • Miniature spectrometer based on diffraction in a dispersive hole array. (Yang T, Xu C, Ho HP, Zhu YY, Hong XH, Wang QJ, Chen YC, Li XA, Zhou XH, Yi MD, Huang W) Opt Lett 2015 Jul 01;40(13):3217-20 PMID: 26125406 07/01/2015       10 Citations
  • Computed tomography number changes observed during computed tomography-guided radiation therapy for head and neck cancer. (Feng M, Yang C, Chen X, Xu S, Moraru I, Lang J, Schultz C, Li XA) Int J Radiat Oncol Biol Phys 2015 Apr 01;91(5):1041-7 PMID: 25832695 04/04/2015       12 Citations
  • Comparing the quality of passively-scattered proton and photon tomotherapy plans for brain and head and neck disease sites. (Kainz K, Firat S, Wilson JF, Schultz C, Siker M, Wang A, Olson D, Li XA) Phys Med Biol 2015 Mar 21;60(6):2167-77 PMID: 25683607 02/17/2015    
  • Significant Reduction of Late Toxicities in Patients With Extremity Sarcoma Treated With Image-Guided Radiation Therapy to a Reduced Target Volume: Results of Radiation Therapy Oncology Group RTOG-0630 Trial. (Wang D, Zhang Q, Eisenberg BL, Kane JM, Li XA, Lucas D, Petersen IA, DeLaney TF, Freeman CR, Finkelstein SE, Hitchcock YJ, Bedi M, Singh AK, Dundas G, Kirsch DG) J Clin Oncol 2015 Jul 10;33(20):2231-8 PMID: 25667281 PMCID: PMC4486342 02/11/2015       60 Citations
  • Adaptive replanning to account for lumpectomy cavity change in sequential boost after whole-breast irradiation. (Chen X, Qiao Q, DeVries A, Li W, Currey A, Kelly T, Bergom C, Wilson JF, Li XA) Int J Radiat Oncol Biol Phys 2014 Dec 01;90(5):1208-15 PMID: 25442046 12/03/2014       4 Citations
  • A planning comparison of 7 irradiation options allowed in RTOG 1005 for early-stage breast cancer. (Chen GP, Liu F, White J, Vicini FA, Freedman GM, Arthur DW, Li XA) Med Dosim 2015;40(1):21-5 PMID: 25155215 PMCID: PMC4654615 08/27/2014       9 Citations
  • Point/Counterpoint. Online adaptive planning for prostate cancer radiotherapy is necessary and ready now. (Li XA, Wu Q, Orton CG) Med Phys 2014 Aug;41(8):080601 PMID: 25103556 08/12/2014       6 Citations
  • Determination of internal target volume for radiation treatment planning of esophageal cancer by using 4-dimensional computed tomography (4DCT). (Chen X, Lu H, Tai A, Johnstone C, Gore E, Li XA) Int J Radiat Oncol Biol Phys 2014 Sep 01;90(1):102-9 PMID: 25015201 07/13/2014       6 Citations
  • Consolidating duodenal and small bowel toxicity data via isoeffective dose calculations based on compiled clinical data. (Prior P, Tai A, Erickson B, Allen Li X) Pract Radiat Oncol 2014 Mar-Apr;4(2):e125-e131 PMID: 24890358 06/04/2014       4 Citations
  • Variability of target and normal structure delineation using multimodality imaging for radiation therapy of pancreatic cancer. (Dalah E, Moraru I, Paulson E, Erickson B, Li XA) Int J Radiat Oncol Biol Phys 2014 Jul 01;89(3):633-40 PMID: 24755533 04/24/2014       18 Citations
  • Combined online and offline adaptive radiation therapy: a dosimetric feasibility study. (Yang C, Liu F, Ahunbay E, Chang YW, Lawton C, Schultz C, Wang D, Firat S, Erickson B, Li XA) Pract Radiat Oncol 2014 Jan-Feb;4(1):e75-83 PMID: 24621436 03/14/2014       8 Citations
  • Radiation dose responses for chemoradiation therapy of pancreatic cancer: an analysis of compiled clinical data using biophysical models. (Moraru IC, Tai A, Erickson B, Li XA) Pract Radiat Oncol 2014 Jan-Feb;4(1):13-9 PMID: 24621418 03/14/2014       12 Citations
  • Statistical modeling approach to quantitative analysis of interobserver variability in breast contouring. (Yang J, Woodward WA, Reed VK, Strom EA, Perkins GH, Tereffe W, Buchholz TA, Zhang L, Balter P, Court LE, Li XA, Dong L) Int J Radiat Oncol Biol Phys 2014 May 01;89(1):214-21 PMID: 24613812 PMCID: PMC3997068 03/13/2014       9 Citations
  • Assessment and management of interfractional variations in daily diagnostic-quality-CT guided prostate-bed irradiation after prostatectomy. (Liu F, Ahunbay E, Lawton C, Li XA) Med Phys 2014 Mar;41(3):031710 PMID: 24593714 03/07/2014       7 Citations
  • [Accelerator beam data commissioning equipment and procedures: report of the TG-106 of the therapy physics committee of the AAPM]. (Das IJ, Cheng CW, Watts RJ, Ahnesjö A, Gibbons J, Li XA, Lowenstein J, Mitra RK, Simon WE, Zhu TC) Igaku Butsuri 2013;33(1):16-55 PMID: 24466654 01/29/2014    
  • A phase I/II study piloting accelerated partial breast irradiation using CT-guided intensity modulated radiation therapy in the prone position. (Bergom C, Prior P, Kainz K, Morrow NV, Ahunbay EE, Walker A, Allen Li X, White J) Radiother Oncol 2013 Aug;108(2):215-9 PMID: 23932158 08/13/2013       9 Citations
  • Cardiac injury after 10 gy total body irradiation: indirect role of effects on abdominal organs. (Lenarczyk M, Lam V, Jensen E, Fish BL, Su J, Koprowski S, Komorowski RA, Harmann L, Migrino RQ, Li XA, Hopewell JW, Moulder JE, Baker JE) Radiat Res 2013 Sep;180(3):247-58 PMID: 23919311 PMCID: PMC4042860 08/08/2013       23 Citations
  • Comparison of various online strategies to account for interfractional variations for pancreatic cancer. (Ahunbay EE, Kimura B, Liu F, Erickson BA, Li XA) Int J Radiat Oncol Biol Phys 2013 Aug 01;86(5):914-21 PMID: 23845843 07/13/2013       7 Citations
  • Management of respiration-induced motion with 4-dimensional computed tomography (4DCT) for pancreas irradiation. (Tai A, Liang Z, Erickson B, Li XA) Int J Radiat Oncol Biol Phys 2013 Aug 01;86(5):908-13 PMID: 23688811 05/22/2013       19 Citations
  • Assessment of interfraction patient setup for head-and-neck cancer intensity modulated radiation therapy using multiple computed tomography-based image guidance. (Qi XS, Hu AY, Lee SP, Lee P, DeMarco J, Li XA, Steinberg ML, Kupelian P, Low D) Int J Radiat Oncol Biol Phys 2013 Jul 01;86(3):432-9 PMID: 23474111 03/12/2013       8 Citations
  • Accumulating daily-varied dose distributions of prostate radiation therapy with soft-tissue-based kV CT guidance. (Godley A, Ahunbay E, Peng C, Li XA) J Appl Clin Med Phys 2012 May 10;13(3):3859 PMID: 22584178 PMCID: PMC5716564 05/16/2012       12 Citations
  • Implementation of remote 3-dimensional image guided radiation therapy quality assurance for radiation therapy oncology group clinical trials. (Cui Y, Galvin JM, Parker W, Breen S, Yin FF, Cai J, Papiez LS, Li XA, Bednarz G, Chen W, Xiao Y) Int J Radiat Oncol Biol Phys 2013 Jan 01;85(1):271-7 PMID: 22541964 05/01/2012       8 Citations
  • Simultaneous irradiation of the breast and regional lymph nodes in prone position using helical tomotherapy. (Kainz K, White J, Chen GP, Hermand J, England M, Li XA) Br J Radiol 2012 Oct;85(1018):e899-905 PMID: 22457317 PMCID: PMC3474030 03/30/2012       5 Citations
  • Characterization and management of interfractional anatomic changes for pancreatic cancer radiotherapy. (Liu F, Erickson B, Peng C, Li XA) Int J Radiat Oncol Biol Phys 2012 Jul 01;83(3):e423-9 PMID: 22436785 03/23/2012       42 Citations
  • Impact of computed tomography image quality on image-guided radiation therapy based on soft tissue registration. (Morrow NV, Lawton CA, Qi XS, Li XA) Int J Radiat Oncol Biol Phys 2012 Apr 01;82(5):e733-8 PMID: 22349041 02/22/2012       21 Citations
  • An Estimation of Radiobiological Parameters for Head-and-Neck Cancer Cells and the Clinical Implications. (Qi XS, Yang Q, Lee SP, Li XA, Wang D) Cancers (Basel) 2012 Jun 15;4(2):566-80 PMID: 24213325 PMCID: PMC3712697 01/01/2012    
  • A Comment on Qi et al. An Estimation of Radiobiological Parameters for Head-and-Neck Cancer Cells and the Clinical Implications-Authors' Reply. (Qi XS, Yang QH, Lee S, Li XA, Wang D) Cancers (Basel) 2012 Dec 27;5(1):12-4 PMID: 24356571 PMCID: PMC3730316 01/01/2012    
  • Lymphedema and arm symptoms following three-dimensional conformal radiation therapy (3DCRT) for node-positive breast cancer (BC) patients. (Sparks I, Prior P, Xiang Q, Li XA, Yen TW, White JR) J Clin Oncol 2011 Sep 20;29(27_suppl):130 PMID: 27958152 09/20/2011    
  • Development of an online adaptive solution to account for inter- and intra-fractional variations. (Li XA, Liu F, Tai A, Ahunbay E, Chen G, Kelly T, Lawton C, Erickson B) Radiother Oncol 2011 Sep;100(3):370-4 PMID: 21924781 09/20/2011       22 Citations
  • Internal margin assessment using cine MRI analysis of deglutition in head and neck cancer radiotherapy. (Paulson ES, Bradley JA, Wang D, Ahunbay EE, Schultz C, Li XA) Med Phys 2011 Apr;38(4):1740-7 PMID: 21626908 06/02/2011       9 Citations
  • Validation of an online replanning technique for prostate adaptive radiotherapy. (Peng C, Chen G, Ahunbay E, Wang D, Lawton C, Li XA) Phys Med Biol 2011 Jun 21;56(12):3659-68 PMID: 21610293 05/26/2011       16 Citations
  • Interfractional target variations for partial breast irradiation. (Ahunbay EE, Robbins J, Christian R, Godley A, White J, Li XA) Int J Radiat Oncol Biol Phys 2012 Apr 01;82(5):1594-604 PMID: 21570200 05/17/2011       10 Citations
  • The dosimetric and delivery advantages of a new 160-leaf MLC. (Prah DE, Kainz K, Peng C, Li XA) Technol Cancer Res Treat 2011 Jun;10(3):219-29 PMID: 21517128 04/27/2011    
  • Respiration induced heart motion and indications of gated delivery for left-sided breast irradiation. (Qi XS, Hu A, Wang K, Newman F, Crosby M, Hu B, White J, Li XA) Int J Radiat Oncol Biol Phys 2012 Apr 01;82(5):1605-11 PMID: 21489710 04/15/2011       18 Citations
  • Is α/β for breast cancer really low? (Qi XS, White J, Li XA) Radiother Oncol 2011 Aug;100(2):282-8 PMID: 21367477 03/04/2011       57 Citations
  • Dynamic MRI analysis of tumor and organ motion during rest and deglutition and margin assessment for radiotherapy of head-and-neck cancer. (Bradley JA, Paulson ES, Ahunbay E, Schultz C, Li XA, Wang D) Int J Radiat Oncol Biol Phys 2011 Dec 01;81(5):e803-12 PMID: 21300480 02/09/2011       18 Citations
  • Multi-system verification of registrations for image-guided radiotherapy in clinical trials. (Cui Y, Galvin JM, Straube WL, Bosch WR, Purdy JA, Li XA, Xiao Y) Int J Radiat Oncol Biol Phys 2011 Sep 01;81(1):305-12 PMID: 21236596 PMCID: PMC3129475 01/18/2011       8 Citations
  • Characterizing interfraction variations and their dosimetric effects in prostate cancer radiotherapy. (Peng C, Ahunbay E, Chen G, Anderson S, Lawton C, Li XA) Int J Radiat Oncol Biol Phys 2011 Mar 01;79(3):909-14 PMID: 20732764 08/25/2010       38 Citations
  • Tools for consensus analysis of experts' contours for radiotherapy structure definitions. (Allozi R, Li XA, White J, Apte A, Tai A, Michalski JM, Bosch WR, El Naqa I) Radiother Oncol 2010 Dec;97(3):572-8 PMID: 20708285 PMCID: PMC3116271 08/17/2010       45 Citations
  • Respiratory organ motion and dosimetric impact on breast and nodal irradiation. (Qi XS, White J, Rabinovitch R, Merrell K, Sood A, Bauer A, Wilson JF, Miften M, Li XA) Int J Radiat Oncol Biol Phys 2010 Oct 01;78(2):609-17 PMID: 20472366 05/18/2010       30 Citations
  • Online adaptive replanning method for prostate radiotherapy. (Ahunbay EE, Peng C, Holmes S, Godley A, Lawton C, Li XA) Int J Radiat Oncol Biol Phys 2010 Aug 01;77(5):1561-72 PMID: 20362401 04/07/2010       50 Citations
  • Radiation-associated liver injury. (Pan CC, Kavanagh BD, Dawson LA, Li XA, Das SK, Miften M, Ten Haken RK) Int J Radiat Oncol Biol Phys 2010 Mar 01;76(3 Suppl):S94-100 PMID: 20171524 PMCID: PMC4388033 03/05/2010       281 Citations
  • Radiation dose-volume effects in the brain. (Lawrence YR, Li XA, el Naqa I, Hahn CA, Marks LB, Merchant TE, Dicker AP) Int J Radiat Oncol Biol Phys 2010 Mar 01;76(3 Suppl):S20-7 PMID: 20171513 PMCID: PMC3554255 03/05/2010       306 Citations
  • Radiation-associated kidney injury. (Dawson LA, Kavanagh BD, Paulino AC, Das SK, Miften M, Li XA, Pan C, Ten Haken RK, Schultheiss TE) Int J Radiat Oncol Biol Phys 2010 Mar 01;76(3 Suppl):S108-15 PMID: 20171504 03/05/2010       108 Citations
  • Radiation dose-volume effects in the stomach and small bowel. (Kavanagh BD, Pan CC, Dawson LA, Das SK, Li XA, Ten Haken RK, Miften M) Int J Radiat Oncol Biol Phys 2010 Mar 01;76(3 Suppl):S101-7 PMID: 20171503 03/05/2010       233 Citations
  • Gated treatment delivery verification with on-line megavoltage fluoroscopy. (Tai A, Christensen JD, Gore E, Khamene A, Boettger T, Li XA) Int J Radiat Oncol Biol Phys 2010 Apr;76(5):1592-8 PMID: 20133069 02/06/2010       12 Citations
  • Report of AAPM Therapy Physics Committee Task Group 74: in-air output ratio, Sc, for megavoltage photon beams. (Zhu TC, Ahnesjö A, Lam KL, Li XA, Ma CM, Palta JR, Sharpe MB, Thomadsen B, Tailor RC, AAPM Therapy Physics Committee Task Group 74) Med Phys 2009 Nov;36(11):5261-91 PMID: 19994536 12/10/2009       53 Citations
  • An on-line replanning method for head and neck adaptive radiotherapy. (Ahunbay EE, Peng C, Godley A, Schultz C, Li XA) Med Phys 2009 Oct;36(10):4776-90 PMID: 19928108 11/26/2009       37 Citations
  • Improved critical structure sparing with biologically based IMRT optimization. (Qi XS, Semenenko VA, Li XA) Med Phys 2009 May;36(5):1790-9 PMID: 19544798 06/24/2009    
  • Automated registration of large deformations for adaptive radiation therapy of prostate cancer. (Godley A, Ahunbay E, Peng C, Li XA) Med Phys 2009 Apr;36(4):1433-41 PMID: 19472650 05/29/2009       41 Citations
  • Investigation of helical tomotherapy for partial-breast irradiation of prone-positioned patients. (Kainz K, White J, Herman J, Li XA) Int J Radiat Oncol Biol Phys 2009 May 01;74(1):275-82 PMID: 19362247 04/14/2009       17 Citations
  • Extrapolation of normal tissue complication probability for different fractionations in liver irradiation. (Tai A, Erickson B, Li XA) Int J Radiat Oncol Biol Phys 2009 May 01;74(1):283-9 PMID: 19289259 03/18/2009       17 Citations
  • Variability of target and normal structure delineation for breast cancer radiotherapy: an RTOG Multi-Institutional and Multiobserver Study. (Li XA, Tai A, Arthur DW, Buchholz TA, Macdonald S, Marks LB, Moran JM, Pierce LJ, Rabinovitch R, Taghian A, Vicini F, Woodward W, White JR, Radiation Therapy Oncology Group Multi-Institutional and Multiobserver Study) Int J Radiat Oncol Biol Phys 2009 Mar 01;73(3):944-51 PMID: 19215827 PMCID: PMC2911777 02/14/2009       156 Citations
  • Evaluation of a commercial biologically based IMRT treatment planning system. (Semenenko VA, Reitz B, Day E, Qi XS, Miften M, Li XA) Med Phys 2008 Dec;35(12):5851-60 PMID: 19175141 01/30/2009       51 Citations
  • A comparison of daily megavoltage CT and ultrasound image guided radiation therapy for prostate cancer. (Peng C, Kainz K, Lawton C, Li XA) Med Phys 2008 Dec;35(12):5619-28 PMID: 19175119 01/30/2009       23 Citations
  • Accelerator beam data commissioning equipment and procedures: report of the TG-106 of the Therapy Physics Committee of the AAPM. (Das IJ, Cheng CW, Watts RJ, Ahnesjö A, Gibbons J, Li XA, Lowenstein J, Mitra RK, Simon WE, Zhu TC, TG-106 of the Therapy Physics Committee of the AAPM) Med Phys 2008 Sep;35(9):4186-215 PMID: 18841871 10/10/2008       171 Citations
  • An on-line replanning scheme for interfractional variations. (Ahunbay EE, Peng C, Chen GP, Narayanan S, Yu C, Lawton C, Li XA) Med Phys 2008 Aug;35(8):3607-15 PMID: 18777921 09/10/2008       73 Citations
  • Automated computer optimization for 3D treatment planning of breast irradiation. (Chen GP, Ahunbay E, Li XA) Med Phys 2008 Jun;35(6):2253-8 PMID: 18649455 07/25/2008       6 Citations
  • Dosimetric impact of intrafraction motion for compensator-based proton therapy of lung cancer. (Zhao L, Sandison GA, Farr JB, Hsi WC, Li XA) Phys Med Biol 2008 Jun 21;53(12):3343-64 PMID: 18523345 06/05/2008       15 Citations
  • Irradiation of varying volumes of rat lung to same mean lung dose: a little to a lot or a lot to a little? (Semenenko VA, Molthen RC, Li C, Morrow NV, Li R, Ghosh SN, Medhora MM, Li XA) Int J Radiat Oncol Biol Phys 2008 Jul 01;71(3):838-47 PMID: 18439765 04/29/2008       25 Citations
  • A Monte-Carlo derived dual-source model for helical tomotherapy treatment planning. (Hsiao Y, Stewart RD, Li XA) Technol Cancer Res Treat 2008 Apr;7(2):141-7 PMID: 18345703 03/19/2008    
  • Synergistic effect of 15-lipoxygenase 2 and radiation in killing head-and-neck cancer. (Yang Q, Feng Y, Schultz CJ, Li XA, Wu H, Wang D) Cancer Gene Ther 2008 May;15(5):323-30 PMID: 18292796 02/23/2008       6 Citations
  • Patient-specific margins for proton therapy of lung. (Zhao L, Sandison GA, Farr JB, Hsi WC, Wu H, Li XA) Australas Phys Eng Sci Med 2007 Dec;30(4):344-8 PMID: 18274078 02/16/2008    
  • Estimate of radiobiologic parameters from clinical data for biologically based treatment planning for liver irradiation. (Tai A, Erickson B, Khater KA, Li XA) Int J Radiat Oncol Biol Phys 2008 Mar 01;70(3):900-7 PMID: 18262101 02/12/2008       33 Citations
  • Lyman-Kutcher-Burman NTCP model parameters for radiation pneumonitis and xerostomia based on combined analysis of published clinical data. (Semenenko VA, Li XA) Phys Med Biol 2008 Feb 07;53(3):737-55 PMID: 18199912 01/18/2008       70 Citations
  • Designing equivalent treatment regimens for prostate radiotherapy based on equivalent uniform dose. (Li XA, Wang JZ, Stewart RD, Dibiase SJ, Wang D, Lawton CA) Br J Radiol 2008 Jan;81(961):59-68 PMID: 18039721 11/28/2007       9 Citations
  • BGRT: biologically guided radiation therapy-the future is fast approaching! (Stewart RD, Li XA) Med Phys 2007 Oct;34(10):3739-51 PMID: 17985619 11/08/2007       38 Citations
  • Intra- and interfractional variations for prone breast irradiation: an indication for image-guided radiotherapy. (Morrow NV, Stepaniak C, White J, Wilson JF, Li XA) Int J Radiat Oncol Biol Phys 2007 Nov 01;69(3):910-7 PMID: 17889272 09/25/2007       43 Citations
  • Investigation of the reliability, accuracy, and efficiency of gated IMRT delivery with a commercial linear accelerator. (Ahunbay E, Li XA) Med Phys 2007 Jul;34(7):2928-38 PMID: 17822001 09/08/2007       12 Citations
  • Possible fractionated regimens for image-guided intensity-modulated radiation therapy of large arteriovenous malformations. (Qi XS, Schultz CJ, Li XA) Phys Med Biol 2007 Sep 21;52(18):5667-82 PMID: 17804888 09/07/2007       17 Citations
  • Comparison of three accelerated partial breast irradiation techniques: treatment effectiveness based upon biological models. (Bovi J, Qi XS, White J, Li XA) Radiother Oncol 2007 Sep;84(3):226-32 PMID: 17692980 08/19/2007       42 Citations
  • Role of the angiotensin II type-2 receptor in radiation nephropathy. (Cohen EP, Fish BL, Sharma M, Li XA, Moulder JE) Transl Res 2007 Aug;150(2):106-15 PMID: 17656330 PMCID: PMC2034340 07/28/2007       18 Citations
  • Development of an inverse optimization package to plan nonuniform dose distributions based on spatially inhomogeneous radiosensitivity extracted from biological images. (Chen GP, Ahunbay E, Schultz C, Li XA) Med Phys 2007 Apr;34(4):1198-205 PMID: 17500451 05/16/2007       17 Citations
  • Point/counterpoint. Respiratory gating for radiation therapy is not ready for prime time. (Li XA, Keall PJ, Orton CG) Med Phys 2007 Mar;34(3):867-70 PMID: 17441231 04/19/2007       22 Citations
  • Radiation oncology physicists will need to better understand medical imaging. (Li XA, Hendee WR) J Am Coll Radiol 2007 Jan;4(1):40-4 PMID: 17412223 04/07/2007    
  • Interfractional variations in patient setup and anatomic change assessed by daily computed tomography. (Li XA, Qi XS, Pitterle M, Kalakota K, Mueller K, Erickson BA, Wang D, Schultz CJ, Firat SY, Wilson JF) Int J Radiat Oncol Biol Phys 2007 Jun 01;68(2):581-91 PMID: 17331669 03/03/2007       83 Citations
  • Direct aperture optimization-based intensity-modulated radiotherapy for whole breast irradiation. (Ahunbay EE, Chen GP, Thatcher S, Jursinic PA, White J, Albano K, Li XA) Int J Radiat Oncol Biol Phys 2007 Mar 15;67(4):1248-58 PMID: 17275205 02/06/2007       52 Citations
  • Halftime for repair of sublethal damage in normal bladder and rectum: an analysis of clinical data from cervix brachytherapy. (Guerrero M, Li XA) Phys Med Biol 2006 Aug 21;51(16):4063-71 PMID: 16885624 08/04/2006       14 Citations
  • Dose escalation to combat hypoxia in prostate cancer: a radiobiological study on clinical data. (Wang JZ, Li XA, Mayr NA) Br J Radiol 2006 Nov;79(947):905-11 PMID: 16885177 08/04/2006       26 Citations
  • Initial experience of FDG-PET/CT guided IMRT of head-and-neck carcinoma. (Wang D, Schultz CJ, Jursinic PA, Bialkowski M, Zhu XR, Brown WD, Rand SD, Michel MA, Campbell BH, Wong S, Li XA, Wilson JF) Int J Radiat Oncol Biol Phys 2006 May 01;65(1):143-51 PMID: 16618577 04/19/2006       111 Citations
  • An estimation of radiobiologic parameters from clinical outcomes for radiation treatment planning of brain tumor. (Qi XS, Schultz CJ, Li XA) Int J Radiat Oncol Biol Phys 2006 Apr 01;64(5):1570-80 PMID: 16580506 04/04/2006       21 Citations
  • Technical and dosimetric aspects of respiratory gating using a pressure-sensor motion monitoring system. (Li XA, Stepaniak C, Gore E) Med Phys 2006 Jan;33(1):145-54 PMID: 16485421 02/21/2006       120 Citations
  • Improving patient-specific dosimetry for intravascular brachytherapy. (Li XA, O'Neill M, Suntharalingam M) Brachytherapy 2005;4(4):291-7 PMID: 16344260 12/14/2005       2 Citations
  • Using a photon phase-space source for convolution/superposition dose calculations in radiation therapy. (Naqvi SA, D'Souza WD, Earl MA, Ye SJ, Shih R, Li XA) Phys Med Biol 2005 Sep 07;50(17):4111-24 PMID: 16177534 09/24/2005       6 Citations
  • Dose perturbations due to contrast medium and air in mammosite treatment: an experimental and Monte Carlo study. (Cheng CW, Mitra R, Li XA, Das IJ) Med Phys 2005 Jul;32(7):2279-87 PMID: 16121583 08/27/2005       27 Citations
  • Over the next decade the success of radiation treatment planning will be judged by the immediate biological response of tumor cells rather than by surrogate measures such as dose maximization and uniformity. (Ling CC, Li XA) Med Phys 2005 Jul;32(7):2189-92 PMID: 16121572 08/27/2005       26 Citations
  • Simultaneous integrated intensity-modulated radiotherapy boost for locally advanced gynecological cancer: radiobiological and dosimetric considerations. (Guerrero M, Li XA, Ma L, Linder J, Deyoung C, Erickson B) Int J Radiat Oncol Biol Phys 2005 Jul 01;62(3):933-9 PMID: 15936580 06/07/2005       50 Citations
  • Dosimetric advantages of IMRT simultaneous integrated boost for high-risk prostate cancer. (Li XA, Wang JZ, Jursinic PA, Lawton CA, Wang D) Int J Radiat Oncol Biol Phys 2005 Mar 15;61(4):1251-7 PMID: 15752907 03/09/2005       55 Citations
  • Modeling prostate cancer: in regards to Nahum et al. (Int J Radiat Oncol Biol Phys 2003;57:391-401). (Wang JZ, Mayr NA, Li XA, Stewart RD) Int J Radiat Oncol Biol Phys 2005 Jan 01;61(1):309-10; author reply 310-1 PMID: 15629636 01/05/2005       8 Citations
  • Impact of tumor repopulation on radiotherapy planning. (Wang JZ, Li XA) Int J Radiat Oncol Biol Phys 2005 Jan 01;61(1):220-7 PMID: 15629615 01/05/2005       40 Citations
  • Extending the linear-quadratic model for large fraction doses pertinent to stereotactic radiotherapy. (Guerrero M, Li XA) Phys Med Biol 2004 Oct 21;49(20):4825-35 PMID: 15566178 11/30/2004       183 Citations
  • Comparison of in vitro and in vivo alpha/beta ratios for prostate cancer. (Carlson DJ, Stewart RD, Li XA, Jennings K, Wang JZ, Guerrero M) Phys Med Biol 2004 Oct 07;49(19):4477-91 PMID: 15552412 11/24/2004       65 Citations
  • Radiation absorbed dose distribution in a patient treated with yttrium-90 microspheres for hepatocellular carcinoma. (Sarfaraz M, Kennedy AS, Lodge MA, Li XA, Wu X, Yu CX) Med Phys 2004 Sep;31(9):2449-53 PMID: 15487724 10/19/2004       66 Citations
  • Simultaneous integrated boost for breast cancer using IMRT: a radiobiological and treatment planning study. (Guerrero M, Li XA, Earl MA, Sarfaraz M, Kiggundu E) Int J Radiat Oncol Biol Phys 2004 Aug 01;59(5):1513-22 PMID: 15275739 07/28/2004       60 Citations
  • Analysis of a large number of clinical studies for breast cancer radiotherapy: estimation of radiobiological parameters for treatment planning. (Guerrero M, Li XA) Phys Med Biol 2003 Oct 21;48(20):3307-26 PMID: 14620060 11/19/2003       33 Citations
  • The low alpha/beta ratio for prostate cancer: what does the clinical outcome of HDR brachytherapy tell us? (Wang JZ, Li XA, Yu CX, DiBiase SJ) Int J Radiat Oncol Biol Phys 2003 Nov 15;57(4):1101-8 PMID: 14575842 10/25/2003       88 Citations
  • Dose escalation in permanent brachytherapy for prostate cancer: dosimetric and biological considerations. (Li XA, Wang JZ, Stewart RD, DiBiase SJ) Phys Med Biol 2003 Sep 07;48(17):2753-65 PMID: 14516099 10/01/2003       34 Citations
  • Impact of prolonged fraction delivery times on tumor control: a note of caution for intensity-modulated radiation therapy (IMRT). (Wang JZ, Li XA, D'Souza WD, Stewart RD) Int J Radiat Oncol Biol Phys 2003 Oct 01;57(2):543-52 PMID: 12957268 09/06/2003       159 Citations
  • A technique to sharpen the beam penumbra for Gamma Knife radiosurgery. (Guerrero M, Li XA, Ma L) Phys Med Biol 2003 Jun 21;48(12):1843-53 PMID: 12870587 07/23/2003       11 Citations
  • Inverse planning for intensity-modulated arc therapy using direct aperture optimization. (Earl MA, Shepard DM, Naqvi S, Li XA, Yu CX) Phys Med Biol 2003 Apr 21;48(8):1075-89 PMID: 12741503 05/14/2003       116 Citations
  • Dose effects of stents in intravascular brachytherapy for in-stent restenosis: a Monte Carlo calculation. (Li XA) Int J Radiat Oncol Biol Phys 2003 Mar 01;55(3):842-8 PMID: 12573772 02/08/2003       9 Citations
  • IVBTMC, a Monte Carlo dose calculation tool for intravascular brachytherapy. (Chibani O, Li XA) Med Phys 2003 Jan;30(1):44-51 PMID: 12557978 02/01/2003       6 Citations
  • Evaluation of external beam radiotherapy and brachytherapy for localized prostate cancer using equivalent uniform dose. (Wang JZ, Li XA) Med Phys 2003 Jan;30(1):34-40 PMID: 12557976 02/01/2003       48 Citations
  • Monte Carlo dose characterization of a new 90Sr/90Y source with balloon for intravascular brachytherapy. (Wang R, Li XA, Lobdell J) Med Phys 2003 Jan;30(1):27-33 PMID: 12557975 02/01/2003       4 Citations
  • How low is the alpha/beta ratio for prostate cancer? (Wang JZ, Guerrero M, Li XA) Int J Radiat Oncol Biol Phys 2003 Jan 01;55(1):194-203 PMID: 12504054 12/31/2002       237 Citations
  • Dosimetric comparison of two 90Sr/90Y sources for intravascular brachytherapy: an EGSnrc Monte Carlo calculation. (Wang R, Li XA) Phys Med Biol 2002 Dec 07;47(23):4259-69 PMID: 12502048 12/28/2002       10 Citations
  • Radiotherapy dose perturbation of metallic esophageal stents. (Li XA, Chibani O, Greenwald B, Suntharalingam M) Int J Radiat Oncol Biol Phys 2002 Nov 15;54(4):1276-85 PMID: 12419457 11/07/2002       24 Citations
  • Equivalence of the linear-quadratic and two-lesion kinetic models. (Guerrero M, Stewart RD, Wang JZ, Li XA) Phys Med Biol 2002 Sep 07;47(17):3197-209 PMID: 12361218 10/04/2002       26 Citations
  • Dose characterization in the near-source region for two high dose rate brachytherapy sources. (Wang R, Li XA) Med Phys 2002 Aug;29(8):1678-86 PMID: 12201413 08/31/2002       15 Citations
  • Direct aperture optimization: a turnkey solution for step-and-shoot IMRT. (Shepard DM, Earl MA, Li XA, Naqvi S, Yu C) Med Phys 2002 Jun;29(6):1007-18 PMID: 12094970 07/04/2002       254 Citations
  • Dose effect of guidewire position in intravascular brachytherapy. (Shih R, Hsu WL, Li XA) Phys Med Biol 2002 May 21;47(10):1733-40 PMID: 12069090 06/19/2002       5 Citations
  • Monte Carlo dose calculations in homogeneous media and at interfaces: a comparison between GEPTS, EGSnrc, MCNP, and measurements. (Chibani O, Li XA) Med Phys 2002 May;29(5):835-47 PMID: 12033580 05/30/2002       65 Citations
  • Clinical implementation of intensity-modulated arc therapy. (Yu CX, Li XA, Ma L, Chen D, Naqvi S, Shepard D, Sarfaraz M, Holmes TW, Suntharalingam M, Mansfield CM) Int J Radiat Oncol Biol Phys 2002 Jun 01;53(2):453-63 PMID: 12023150 05/23/2002       142 Citations
  • Dosimetric effects of source-offset in intravascular brachytherapy. (Chibani O, Li XA) Med Phys 2002 Apr;29(4):530-7 PMID: 11991124 05/07/2002       9 Citations
  • Dosimetry of source stepping for intravascular brachytherapy. (Li XA, Suntharalingam M, Yu C) Cardiovasc Radiat Med 2001 Jul-Sep;2(3):165-72 PMID: 11786323 01/12/2002       9 Citations
  • Optimized intensity-modulated arc therapy for prostate cancer treatment. (Ma L, Yu CX, Earl M, Holmes T, Sarfaraz M, Li XA, Shepard D, Amin P, DiBiase S, Suntharalingam M, Mansfield C) Int J Cancer 2001 Dec 20;96(6):379-84 PMID: 11745509 12/18/2001       41 Citations
  • Dose effects of guide wires for catheter-based intravascular brachytherapy. (Li XA, Shih R) Int J Radiat Oncol Biol Phys 2001 Nov 15;51(4):1103-10 PMID: 11704335 11/13/2001       13 Citations
  • Monte Carlo dose verification for intensity-modulated arc therapy. (Li XA, Ma L, Naqvi S, Shih R, Yu C) Phys Med Biol 2001 Sep;46(9):2269-82 PMID: 11580168 10/03/2001       32 Citations
  • Monte Carlo characterization of a 32P source for intravascular brachytherapy. (Wang R, Li XA) Med Phys 2001 Aug;28(8):1776-85 PMID: 11548949 09/11/2001       17 Citations
  • Practical aspects of in situ 16O (gamma,n) 15O activation using a conventional medical accelerator for the purpose of perfusion imaging. (Oldham M, Sapareto SA, Li XA, Allen J, Sutlief S, Wong OC, Wong JW) Med Phys 2001 Aug;28(8):1669-78 PMID: 11548936 09/11/2001       2 Citations
  • Analysing collimator structure effects in head-scatter calculations for IMRT class fields using scatter raytracing. (Naqvi SA, Sarfaraz M, Holmes T, Yu CX, Li XA) Phys Med Biol 2001 Jul;46(7):2009-28 PMID: 11474941 07/28/2001       17 Citations
  • Dosimetric effects of contrast media for catheter-based intravascular brachytherapy. (Li XA) Med Phys 2001 May;28(5):757-63 PMID: 11393470 06/08/2001       15 Citations
  • Dynamic wedge versus physical wedge: a Monte Carlo study. (Shih R, Li XA, Chu JC) Med Phys 2001 Apr;28(4):612-9 PMID: 11339759 05/08/2001       21 Citations
  • Reducing loss in lateral charged-particle equilibrium due to air cavities present in x-ray irradiated media by using longitudinal magnetic fields. (Naqvi SA, Li XA, Ramahi SW, Chu JC, Ye SJ) Med Phys 2001 Apr;28(4):603-11 PMID: 11339758 05/08/2001       15 Citations
  • Monte Carlo dose calculations of beta-emitting sources for intravascular brachytherapy: a comparison between EGS4, EGSnrc, and MCNP. (Wang R, Li XA) Med Phys 2001 Feb;28(2):134-41 PMID: 11243335 03/13/2001       52 Citations
  • Conformal photon-beam therapy with transverse magnetic fields: a Monte Carlo study. (Li XA, Reiffel L, Chu J, Naqvi S) Med Phys 2001 Feb;28(2):127-33 PMID: 11243334 03/13/2001       16 Citations
  • A Monte Carlo calculation of dosimetric parameters of 90Sr/90Y and 192Ir SS sources for intravascular brachytherapy. (Wang R, Li XA) Med Phys 2000 Nov;27(11):2528-35 PMID: 11128305 12/29/2000       55 Citations
  • Evaluation of EGS4/PRESTA multiple-scattering algorithms for 90Sr/90Y intravascular brachytherapy dosimetry. (Wang R, Li XA, Yu CX) Phys Med Biol 2000 Aug;45(8):2343-52 PMID: 10958198 08/25/2000       11 Citations
  • A systematic evaluation of air cavity dose perturbation in megavoltage x-ray beams. (Li XA, Yu C, Holmes T) Med Phys 2000 May;27(5):1011-7 PMID: 10841404 06/07/2000       38 Citations
  • An efficient method of measuring the 4 mm helmet output factor for the Gamma knife. (Ma L, Li XA, Yu CX) Phys Med Biol 2000 Mar;45(3):729-33 PMID: 10730967 03/24/2000       19 Citations
  • Dosimetric perturbations of linear array of beta-emitter seeds and metallic stent in intravascular brachytherapy. (Ye SJ, Li XA, Zimmer JR, Chu JC, Choi CK) Med Phys 2000 Feb;27(2):374-80 PMID: 10718142 03/16/2000       30 Citations
  • Beta versus gamma for catheter-based intravascular brachytherapy: dosimetric perspectives in the presence of metallic stents and calcified plaques. (Li XA, Wang R, Yu C, Suntharalingam M) Int J Radiat Oncol Biol Phys 2000 Mar 01;46(4):1043-9 PMID: 10705028 03/08/2000       38 Citations
  • Peak scatter factors for high energy photon beams. (Li XA) Med Phys 1999 Jun;26(6):962-6 PMID: 10436898 08/07/1999       7 Citations
  • Dose enhancement by a thin foil of high-Z material: a Monte Carlo study. (Li XA, Chu JC, Chen W, Zusag T) Med Phys 1999 Jul;26(7):1245-51 PMID: 10435524 08/06/1999       29 Citations
  • Calculation of head scatter factors at isocenter or at center of field for any arbitrary jaw setting. (Shih R, Li XA, Chu JC, Hsu WL) Med Phys 1999 Apr;26(4):506-11 PMID: 10227351 05/05/1999       10 Citations
  • Study of dosimetry consistency for kilovoltage x-ray beams. (Ma CM, Li XA, Seuntjens JP) Med Phys 1998 Dec;25(12):2376-84 PMID: 9874830 01/06/1999       19 Citations
  • Dosimetric evaluation of a widely used kilovoltage x-ray unit for endocavitary radiotherapy. (Li XA, Ma CM, Salhani D, Agboola O) Med Phys 1998 Aug;25(8):1464-71 PMID: 9725135 09/02/1998       12 Citations
  • Measurement of percentage depth dose and lateral beam profile for kilovoltage x-ray therapy beams. (Li XA, Ma CM, Salhani D) Phys Med Biol 1997 Dec;42(12):2561-8 PMID: 9434308 01/22/1998       34 Citations
  • Practical approach to electron beam dosimetry at extended SSD. (Cygler J, Li XA, Ding GX, Lawrence E) Phys Med Biol 1997 Aug;42(8):1505-14 PMID: 9279902 08/01/1997       22 Citations
  • The effect of dose rate dependence of p-type silicon detectors on linac relative dosimetry. (Wilkins D, Li XA, Cygler J, Gerig L) Med Phys 1997 Jun;24(6):879-81 PMID: 9198022 06/01/1997       37 Citations
  • Characteristics of orthovoltage x-ray therapy beams at extended SSD for applicators with end plates. (Li XA, Salhani D, Ma CM) Phys Med Biol 1997 Feb;42(2):357-70 PMID: 9044418 02/01/1997       13 Citations
  • Lateral electron equilibrium and electron contamination in measurements of head-scatter factors using miniphantoms and brass caps. (Li XA, Soubra M, Szanto J, Gerig LH) Med Phys 1995 Jul;22(7):1167-70 PMID: 7565391 07/01/1995       70 Citations
  • Electron mass scattering powers: Monte Carlo and analytical calculations. (Li XA, Rogers DW) Med Phys 1995 May;22(5):531-41 PMID: 7643788 05/01/1995       25 Citations
  • Reducing electron contamination for photon beam-quality specification. (Li XA, Rogers DW) Med Phys 1994 Jun;21(6):791-7 PMID: 7935216 06/01/1994       16 Citations
  • Last update: 11/19/2018
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