Thermoacoustic tomography--consistency conditions and the partial scan problem. Phys Med Biol 2004 Jun 07;49(11):2305-15
Date
07/14/2004Pubmed ID
15248579DOI
10.1088/0031-9155/49/11/013Scopus ID
2-s2.0-3042781845 (requires institutional sign-in at Scopus site) 58 CitationsAbstract
Hybrid imaging techniques using either radiofrequency (RF) or near-infrared radiation (NIR) as excitation energy measure averages of tissue RF/NIR absorptivity over spheres centred at ultrasound (US) transducer locations on the bottom of a spherical bowl, where [z < 0]. Inversion formulae for the 'complete data' case where transducers measure all over the bowl weight data from the lower hemisphere more heavily for reconstructions points also satisfying (z < 0]. We derive consistency conditions for the data and use them to compute the unmeasured data corresponding to transducer locations on the top of the bowl. This process is clearly unstable, but somewhat tempered by the reconstruction's l/r weighting.
Author List
Patch SKAuthor
Sarah K. Patch PhD Associate Professor in the Physics department at University of Wisconsin - MilwaukeeMESH terms used to index this publication - Major topics in bold
AlgorithmsArtifacts
Image Enhancement
Image Interpretation, Computer-Assisted
Imaging, Three-Dimensional
Information Storage and Retrieval
Numerical Analysis, Computer-Assisted
Reproducibility of Results
Sensitivity and Specificity
Signal Processing, Computer-Assisted
Thermography
Tomography
Ultrasonography
