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Published June 2012 | Published
Journal Article Open

Numerical investigation of the effects of shear waves in transcranial photoacoustic tomography with a planar geometry


Using a recently developed reconstruction method for photoacoustic tomography (PAT) valid for a planar measurement geometry parallel to a layered medium, we investigate the effects of shear wave propagation in the solid layer upon the ability to estimate Fourier components of the object. We examine this ability as a function of the thickness of the layer supporting shear waves as well as of the incidence angle of the field in the planewave representation. Examples are used to demonstrate the importance of accounting for shear waves in transcranial PAT. Error measures are introduced to quantify the error found when omitting shear waves from the forward model in PAT.

Additional Information

© 2012 SPIE. Paper 11651SS received Nov. 4, 2011; revised manuscript received Jan. 12, 2012; accepted for publication Feb. 8, 2012; published online May 10, 2012. 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 Microphotoacoustics, Inc. and Endra, Inc., which, however, did not support this work.

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