Algorithm development for direct image reconstruction is Dr. Patch's area of training, although she currently collects experimental data. Her current research focus is thermoacoustic imaging technique, a hybrid technique in which rapid heating induces outgoing pressure pulses, which are detected noninvasively by transducers surrounding the field of view. Dr. Patch has developed an inversion formula for idealized thermoacoustic data and now works to account for physical and experimental effects. Thermoacoustic computerized tomography (TCT) testbed development code [text (.txt) version of HFSS code] and a companion set of instructions are outcomes of NIH award R21CA137364. Potential users (those with access to the ANSYS/ANSOFT HFSS software) should save the development code as a .hfss file. Double clicking on the file will initiate execution of the file in HFSS. Demonstrations of the gantry operation are available in the QuickTime or VLC and for Windows.
Sarah Patch received her B.S. in Mathematics & Computational Sciences from Stanford University in 1989 and her Ph.D in Applied Math from UC Berkeley in 1994. She then obtained a National Science Foundation Postdoctoral Fellowship in Mathematical Sciences and worked at the Institute for Mathematics and its Applications from 1994 to 1995. In 1995, she was awarded a Humboldt Postdoctoral Fellowship to work at the University of Muenster, Germany. The following year Patch went back to Stanford University. From 1997 to 1999 Patch held a position GE’s Corporate Research and Development Center; in 2005 she joined GE Medical Systems’ Applied Science Lab in Milwaukee.
Since 2005, Sarah Patch has been working at University of Wisconsin-Milwaukee, where she holds the rank of Associate Professor. Professor Patch has received more than 10 patents and her current research is supported by a UW-Milwaukee Research Growth Initiative Award.
- S.K. Patch, D. Hull, S.K. Griep, K. Jacobsohn, W.A. See,
"Thermoacoustic Contrast of Prostate Cancer due to Heating by Very High Frequency Irradiation"
Physics in Medicine and Biology, accepted for publication.
- M.A. Roggenbuck, R.D. Walker, J.W. Catenacci, S.K. Patch,
"Thermoacoustic Imaging over Large Fields of View"
Ultrasonic Imaging, 25(1), pp. 57-67, (2013), PMID: 23287507.
- D. Li, Y.S. Jung, H.K. Kim, J. Chen, D.A. Geller, M.V. Shuba, S.A. Maksimenko, S. Patch, E. Forati, and George W. Hanson,
"The Effect of Sample Holder Geometry on Electromagnetic Heating of Nanoparticle and NaCl Solutions at 13.56 MHz"
IEEE Trans on Biomedical Engineering, 59(12), pp. 3468-3474, (2012).
- S.K. Patch, N. Rao, H. Kelly, K. Jacobsohn, and W. A. See,
"Specific heat capacity of freshly excised prostate specimens"
Physiological Measurement, 32, N55-64, (2011).
- A. Eckhart, R. Balmer, W. See, S.K. Patch,
"Ex Vivo Thermoacoustic Imaging over Large Fields of View with 108 MHz Irradiation"
IEEE Trans on Biomedical Engineering, 58(8), pp. 2238-2246, (2011).
- G.W. Hanson, S.K. Patch,
"Optimum Heating of Nanoparticle Thermal Contrast Agents at RF Frequencies,"
Journal of Applied Physics, 106, #054309 (2009).
- B. Treeby, B. Cox, E.Z. Zhang, S.K. Patch, P.C. Beard,
"Measurement of broadband temperature-dependent ultrasonic attenuation and dispersion using photoacoustics,"
IEEE Trans on Ultrasonics, Ferroelectrics, and Freq Control, 56(8), pp. 1666-1676, (2009).
- D. Fallon, L. Yan, G.W.Hanson, S.K. Patch,
"RF Testbed for Thermoacoustic Tomography,"
Review of Scientific Instruments, 80, #064301, (2009).
- S. K. Patch, O. Scherzer,
“Photo- and Thermo-Acoustic Imaging,”
Inverse Problems 23 S01-S10, (2007).
- S. K. Patch,
"Photoacoustic and Thermoacoustic Tomography - Consistency Conditions and the Partial Scan Problem"
in Photoacoustic Imaging and Spectroscopy, CRC Press, (2008).