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

Ring-shaped confocal photoacoustic computed tomography for small-animal whole-body imaging


We report herein a novel three-dimensional photoacoustic computed tomography (PACT) system for small-animal whole-body imaging. The PACT system, based on a 512-element full-ring ultrasonic transducer array, was cylindrically focused and capable of forming a two-dimensional image in 1.6 seconds. The pulsed laser could either illuminate directly from the top or be reshaped to illuminate the sample from the side. Top illumination was mainly used for mouse brain and mouse embryo imaging. Side illumination provided in vivo anatomical images of an adult mouse. By translating the mouse along the elevational direction, the system provided serial cross-sectional images.

Additional Information

© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was sponsored in part by National Institutes of Health grants R01 EB000712, R01 EB008085, R01 CA134539, U54 CA136398, R01 EB010049, R01 CA157277, R01 CA159959, and 5P60 DK02057933. L.W. has financial interests in Microphotoacoustics, Inc. and Endra, Inc., which, however, did not support this work.

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