Abstract

A method based on a modified inverse Radon transform is presented to correct photoacoustic and laser-ultrasound section images taken with a cylindrical integrating detector for heterogeneity in the speed of sound. Data for the correction are obtained with a laser ultrasound transmission method, providing two-dimensional maps of the speed of sound distribution. Photoacoustic, laser ultrasound and speed of sound tomography are combined in a single setup using illumination of the sample and several external absorbers with short pulses from a single laser source. The performance of the corrected reconstruction is compared in a simulation and a phantom experiment with a reconstruction using an average, constant sound speed. In this comparison, the reconstruction using the modified inverse Radon transform shows a small but distinguishable improvement.

© 2015 SPIE

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription