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Published February 23, 2012 | Published
Book Section - Chapter Open

Analysis of the role of shear waves in transcranial photoacoustic tomography


We report on an investigation of the role of shear waves in transcranial PAT brain imaging. Using a recently developed PAT image reconstruction method for use with layered media, we quantify the extent to which accounting for shear waves in the reconstruction method can improve image quality. The effects of shear waves propagating in the solid layer on the ability to estimate Fourier components of the object are investigated as a function of the thickness of the layer supporting shear waves as well as the incidence angle of the field in the planewave representation. These results clarify the role of shear waves in transcranial PAT image formation and indicate that further research is warranted to develop reconstruction algorithms that account for shear waves.

Additional Information

© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). Robert W. Schoonover and Mark A. Anastasio acknowledge support in part by NIH awards EB010049 and EB009715. Lihong V. Wang acknowledge support by the NIH awards EB010049, CA134539, EB000712, CA136398, and EB008085. L.V.W. has a financial interest in icrophotoacoustics, Inc. and Endra, Inc., which, however, did not support this work. This proceeding is based on R.W. Schoonover, L.V. Wang, and M.A. Anastasio, "A numerical investigation of the effects of shear waves in transcranial photoacoustic tomography with a planar geometry," under review, J. Biomed. Opt. (2012).

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