Medical College of Wisconsin
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Andrew P. Klein MD

Chief, Associate Professor

Institution: Medical College of Wisconsin
Department: Radiology

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Publications (43)

  • Quantitative MRI Assessment of Post-Surgical Spinal Cord Injury Through Radiomic Analysis. (Sharafi A, Klein AP, Koch KM) J Imaging 2024 Dec 08;10(12) PMID: 39728209 PMCID: PMC11678099 SCOPUS ID: 2-s2.0-85213496292 12/27/2024       4 Citations
  • White Matter Hyperintensities and Microstructural Alterations in Contact Sport Athletes from Adolescence to Early Midlife. (Brett BL, Klein A, Vazirnia P, Omidfar S, Guskiewicz K, McCrea MA, Meier TB) J Neurotrauma 2024 Oct;41(19-20):2307-2322 PMID: 38661548 PMCID: PMC11564850 SCOPUS ID: 2-s2.0-85207664682 04/25/2024       3 Citations
  • Diffusion-weighted MRI of the spinal cord in cervical spondylotic myelopathy after instrumented fusion. (Koch KM, Nencka AS, Klein A, Wang M, Kurpad S, Vedantam A, Budde M) Front Neurol 2023;14:1172833 PMID: 37273696 PMCID: PMC10236479 SCOPUS ID: 2-s2.0-85161052826 06/05/2023       2 Citations
  • Issues in Translating Imaging Technology and Presurgical Diffusion Tensor Imaging (Ulmer JL, Berman JI, Mueller WM, Gaggl W, De Yoe EA, Klein AP) Functional Neuroradiology Principles and Clinical Applications 1 January 2023:969-1002 SCOPUS ID: 2-s2.0-85173370501 01/01/2023    
  • DTI: Functional Anatomy of Key Tracts (Kamali A, Kumar VA, Hasan KM, Maheshwari M, Klein AP, Talekar KS, Ulmer JL, Faro SH) Functional Neuroradiology Principles and Clinical Applications 1 January 2023:1061-1084 SCOPUS ID: 2-s2.0-85173353945 01/01/2023       1 Citation
  • Normal Anatomic Atlas of Common White Matter Tracts Using DTI (Klein AP) Functional Neuroradiology Principles and Clinical Applications 1 January 2023:1477-1489 SCOPUS ID: 2-s2.0-85173306735 01/01/2023    
  • Detecting Primary Progressive Aphasia Atrophy Patterns: A Comparison of Visual Assessment and Quantitative Neuroimaging Techniques. (Franczak S, Pommy J, Minor G, Zolliecoffer C, Bhalla M, Agarwal M, Nencka A, Wang Y, Klein A, O'Neill D, Henry J, Umfleet G) J Alzheimers Dis Rep 2022;6(1):493-501 PMID: 36186726 PMCID: PMC9484148 SCOPUS ID: 2-s2.0-85136808060 10/04/2022    
  • Impact of Shift Volume on Neuroradiology Diagnostic Errors at a Large Tertiary Academic Center. (Ivanovic V, Paydar A, Chang YM, Broadhead K, Smullen D, Klein A, Hacein-Bey L) Acad Radiol 2023 Aug;30(8):1584-1588 PMID: 36180325 SCOPUS ID: 2-s2.0-85146956285 10/01/2022       19 Citations
  • Detecting Primary Progressive Aphasia Atrophy Patterns: A Comparison of Visual Assessment and Quantitative Neuroimaging Techniques (Franczak S, Pommy J, Minor G, Zolliecoffer C, Bhalla M, Agarwal M, Nencka A, Wang Y, Klein A, O'Neill D, Henry J, Umfleet G) Journal of Alzheimer S Disease Reports 2022;6(1):493-501 SCOPUS ID: 2-s2.0-85136808060 01/01/2022    
  • Quantitative correlation of lumbar foraminal stenosis with local morphological metrics (Gunasekaran VS, Hejdak D, Meyer B, Klein A, Koch K) European Spine Journal November 2021;30(11):3319-3323 SCOPUS ID: 2-s2.0-85111401747 11/01/2021       9 Citations
  • Quantitative correlation of lumbar foraminal stenosis with local morphological metrics. (Gunasekaran VS, Hejdak D, Meyer B, Klein A, Koch K) Eur Spine J 2021 Nov;30(11):3319-3323 PMID: 34318337 SCOPUS ID: 2-s2.0-85111401747 07/29/2021       9 Citations
  • Hippocampal Volumes in Amnestic and Non-Amnestic Mild Cognitive Impairment Types Using Two Common Methods of MCI Classification. (Emmert NA, Reiter KE, Butts A, Janecek JK, Agarwal M, Franczak M, Reuss J, Klein A, Wang Y, Umfleet LG) J Int Neuropsychol Soc 2022 Apr;28(4):391-400 PMID: 34130767 SCOPUS ID: 2-s2.0-85108188515 06/17/2021       11 Citations
  • Memory Performance and Quantitative Neuroimaging Software in Mild Cognitive Impairment: A Concurrent Validity Study. (Umfleet LG, Butts AM, Janecek JK, Reiter K, Agarwal M, Brett BL, Ryan JJ, Reuss J, Klein A, Correro AN, Franczak M) J Int Neuropsychol Soc 2020 Nov;26(10):954-962 PMID: 32340636 SCOPUS ID: 2-s2.0-85084404896 04/29/2020       4 Citations
  • Increased Notching of the Corpus Callosum in Fetal Alcohol Spectrum Disorder: A Callosal Misunderstanding? (Schneble E, Lack C, Zapadka M, Pfeifer CM, Bardo DME, Cagley J, Acharya J, Klein AP, Bhalla M, Obayashi JT, Ross D, Pettersson DR, Pollock JM) AJNR Am J Neuroradiol 2020 Apr;41(4):725-728 PMID: 32193189 PMCID: PMC7144650 SCOPUS ID: 2-s2.0-85083540163 03/21/2020       5 Citations
  • Posttraumatic subgaleal herniation of an intracranial cerebral arterial segment. (Bhalla M, Ulmer JL, Klein AP, McAvoy KE, Bhalla NM) Proc (Bayl Univ Med Cent) 2019 Apr;32(2):271-273 PMID: 31191151 PMCID: PMC6541065 SCOPUS ID: 2-s2.0-85063521455 06/14/2019       1 Citation
  • Build-A-FLAIR: Synthetic T2-FLAIR Contrast Generation through Physics Informed Deep Learning (Andrew S. Nencka, Andrew Klein, Kevin M. Koch, Sean D. McGarry, Peter S. LaViolette, Eric S. Paulson, Nikolai J. Mickevicius, L. Tugan Muftuler, Brad Swearingen, Michael A. McCrea) arXiv Nencka, A.S., Klein, A., Koch, K.M., McGarry, S.D., LaViolette, P.S., Paulson, E.S., Mickevicius, N.J., Muftuler, L.T., Swearingen, B. and McCrea, M.A., 2019. Build-A-FLAIR: Synthetic T2-FLAIR Contrast Generation through Physics Informed Deep Learning. arXiv preprint arXiv:1901.04871. 01/15/2019    
  • Prevalence of Potentially Clinically Significant Magnetic Resonance Imaging Findings in Athletes with and without Sport-Related Concussion. (Klein AP, Tetzlaff JE, Bonis JM, Nelson LD, Mayer AR, Huber DL, Harezlak J, Mathews VP, Ulmer JL, Sinson GP, Nencka AS, Koch KM, Wu YC, Saykin AJ, DiFiori JP, Giza CC, Goldman J, Guskiewicz KM, Mihalik JP, Duma SM, Rowson S, Brooks A, Broglio SP, McAllister T, McCrea MA, Meier TB) J Neurotrauma 2019 Jun;36(11):1776-1785 PMID: 30618331 PMCID: PMC6551984 SCOPUS ID: 2-s2.0-85066742597 01/09/2019       45 Citations
  • Interobserver Reliability of Magnetic Resonance Imaging Predictors of Outcome in Cervical Spine Degenerative Conditions. (Grochmal JK, Lozen AM, Klein AP, Mark LP, Li J, Wang MC) World Neurosurg 2018 Sep;117:e215-e220 PMID: 29913296 SCOPUS ID: 2-s2.0-85049856044 06/19/2018       4 Citations
  • Why Is This Auntminnie a Diagnostic Conundrum?: A Knowledge-Based Approach to Balo's Concentric Sclerosis From Reports of 3 Cases and Pooled Data From 68 Other Patients in the Literature. (Agarwal M, Ulmer JL, Klein AP, Mark LP) Curr Probl Diagn Radiol 2019;48(4):415-422 PMID: 29428181 SCOPUS ID: 2-s2.0-85044503739 02/13/2018       6 Citations
  • Changes in perfusion and diffusion in the endplate regions of degenerating intervertebral discs: a DCE-MRI study. (Arpinar VE, Rand SD, Klein AP, Maiman DJ, Muftuler LT) Eur Spine J 2017 May;26(5):1416 PMID: 28425065 SCOPUS ID: 2-s2.0-85018342823 04/21/2017       2 Citations
  • Multimodality imaging in cranial blastomycosis, a great mimicker: Case-based illustration with review of clinical and imaging findings. (Kochar PS, Lath CO, Klein AP, Ulmer JL) Indian J Radiol Imaging 2016;26(1):120-5 PMID: 27081235 PMCID: PMC4813061 SCOPUS ID: 2-s2.0-84962030796 04/16/2016       8 Citations
  • Nonmotor Functions of the Cerebellum: An Introduction. (Klein AP, Ulmer JL, Quinet SA, Mathews V, Mark LP) AJNR Am J Neuroradiol 2016 Jun;37(6):1005-9 PMID: 26939633 PMCID: PMC7963530 03/05/2016    
  • Imaging correlates of neural control of ocular movements. (Agarwal M, Ulmer JL, Chandra T, Klein AP, Mark LP, Mohan S) Eur Radiol 2016 Jul;26(7):2193-205 PMID: 26396109 SCOPUS ID: 2-s2.0-84944601973 09/24/2015       14 Citations
  • Two cytochromes P450 catalyze S-heterocyclizations in cabbage phytoalexin biosynthesis. (Klein AP, Sattely ES) Nat Chem Biol 2015 Nov;11(11):837-9 PMID: 26389737 PMCID: PMC4731101 SCOPUS ID: 2-s2.0-84945124876 09/22/2015       44 Citations
  • Changes in perfusion and diffusion in the endplate regions of degenerating intervertebral discs: a DCE-MRI study. (Arpinar VE, Rand SD, Klein AP, Maiman DJ, Muftuler LT) Eur Spine J 2015 Nov;24(11):2458-67 PMID: 26238936 PMCID: PMC4755697 SCOPUS ID: 2-s2.0-84945463429 08/05/2015       29 Citations
  • Cortical and Subcortical Substrates of Cranial Nerve Function. (Agarwal M, Ulmer JL, Klein AP, Mark LP) Semin Ultrasound CT MR 2015 Jun;36(3):275-90 PMID: 26233861 SCOPUS ID: 2-s2.0-84938418014 08/04/2015    
  • Imaging of Cortical and White Matter Language Processing. (Klein AP, Sabsevitz DS, Ulmer JL, Mark LP) Semin Ultrasound CT MR 2015 Jun;36(3):249-59 PMID: 26233859 SCOPUS ID: 2-s2.0-84938416403 08/04/2015       12 Citations
  • Functional and Dysfunctional Sensorimotor Anatomy and Imaging. (Ulmer JL, Klein AP, Mark LP, Tuna I, Agarwal M, DeYoe E) Semin Ultrasound CT MR 2015 Jun;36(3):220-33 PMID: 26233857 SCOPUS ID: 2-s2.0-84938339696 08/04/2015       3 Citations
  • Letter From the Guest Editor. Imaging of Functional and Dysfunctional Neurologic Systems. (Klein AP) Semin Ultrasound CT MR 2015 Jun;36(3):217 PMID: 26233855 SCOPUS ID: 2-s2.0-84938423442 08/04/2015    
  • Memory Part 3: The Role of the Fornix and Clinical Cases. (Raslau FD, Augustinack JC, Klein AP, Ulmer JL, Mathews VP, Mark LP) AJNR Am J Neuroradiol 2015 Sep;36(9):1604-8 PMID: 26045575 PMCID: PMC7968751 06/06/2015    
  • Memory Part 2: The Role of the Medial Temporal Lobe (Raslau FD, Mark IT, Klein AP, Ulmer JL, Mathews V, Mark LP) American Journal of Neuroradiology 1 May 2015;36(5):846-849 SCOPUS ID: 2-s2.0-85028306625 05/01/2015       48 Citations
  • A simplified algorithm for diagnosis of spinal cord lesions. (Baruah D, Chandra T, Bajaj M, Sonowal P, Klein A, Maheshwari M, Guleria S) Curr Probl Diagn Radiol 2015;44(3):256-66 PMID: 25801464 SCOPUS ID: 2-s2.0-84928769189 03/25/2015       19 Citations
  • Preoperative diffusion tensor imaging: improving neurosurgical outcomes in brain tumor patients. (Ulmer JL, Klein AP, Mueller WM, DeYoe EA, Mark LP) Neuroimaging Clin N Am 2014 Nov;24(4):599-617 PMID: 25441503 SCOPUS ID: 2-s2.0-84908507181 12/03/2014       27 Citations
  • Memory part 2: the role of the medial temporal lobe. (Raslau FD, Mark IT, Klein AP, Ulmer JL, Mathews V, Mark LP) AJNR Am J Neuroradiol 2015 May;36(5):846-9 PMID: 25414002 PMCID: PMC7990589 11/22/2014    
  • Intervertebral disc height loss demonstrates the threshold of major pathological changes during degeneration. (Jarman JP, Arpinar VE, Baruah D, Klein AP, Maiman DJ, Muftuler LT) Eur Spine J 2015 Sep;24(9):1944-50 PMID: 25212450 SCOPUS ID: 2-s2.0-84940101594 09/13/2014       63 Citations
  • Memory part 1: overview. (Raslau FD, Klein AP, Ulmer JL, Mathews V, Mark LP) AJNR Am J Neuroradiol 2014;35(11):2058-60 PMID: 25034776 PMCID: PMC7965175 07/19/2014    
  • DTI for presurgical mapping (Klein AP, Ulmer JL, Mueller WM, Raslau FD, Gaggl W, Maheshwari M) Functional Brain Tumor Imaging 1 May 2014;9781441958587:95-109 SCOPUS ID: 2-s2.0-84949179138 05/01/2014       7 Citations
  • Minimum set of cytochromes P450 for reconstituting the biosynthesis of camalexin, a major Arabidopsis antibiotic. (Klein AP, Anarat-Cappillino G, Sattely ES) Angew Chem Int Ed Engl 2013 Dec 16;52(51):13625-8 PMID: 24151049 PMCID: PMC3867539 SCOPUS ID: 2-s2.0-84890531923 10/24/2013       56 Citations
  • Issues in translating imaging technology and presurgical diffusion tensor imaging (Ulmer JL, Berman JI, Mueller WM, Gaggl W, DeYoe EA, Klein AP) Functional Neuroradiology Principles and Clinical Applications 1 January 2012:731-765 SCOPUS ID: 2-s2.0-84956756725 01/01/2012       7 Citations
  • Normal anatomic atlas of common white matter tracts using DTI (Klein AP) Functional Neuroradiology Principles and Clinical Applications 1 January 2012:983-996 SCOPUS ID: 2-s2.0-84956809161 01/01/2012    
  • White matter: Functional anatomy of key tracts (Maheshwari M, Klein AP, Ulmer JL) Functional Neuroradiology Principles and Clinical Applications 1 January 2012:767-783 SCOPUS ID: 2-s2.0-84949645568 01/01/2012       7 Citations
  • Accelerated solvent extraction of lignin from Aleurites moluccana (Candlenut) nutshells. (Klein AP, Beach ES, Emerson JW, Zimmerman JB) J Agric Food Chem 2010 Sep 22;58(18):10045-8 PMID: 20722427 SCOPUS ID: 2-s2.0-77956634433 08/21/2010       32 Citations
  • Enhanced stent visualization: a case series demonstrating practical applications during PCI. (Eng MH, Klein AP, Wink O, Hansgen A, Carroll JD, Garcia JA) Int J Cardiol 2010 May 14;141(1):e8-e16 PMID: 19135272 SCOPUS ID: 2-s2.0-77951667706 01/13/2009       14 Citations
    • Last update: 10/29/2025