TY - GEN
T1 - Comparison of iterative reconstruction approaches for photoacoustic tomography
AU - Zhang, Jin
AU - Anastasio, Mark A.
AU - La Rivière, Patrick J.
PY - 2007/4/30
Y1 - 2007/4/30
N2 - In many iterative algorithms for photoacoustic tomography (PAT), images are reconstructed from an integrated data function g(r→, t) rather than from the measured acoustic pressure data function p(r→, t). The integrated data function is related to the object by a spherical Radon transform, which can be inverted by use of standard reconstruction algorithms. In this work, we investigate a different reconstruction approach that utilizes the measured pressure data function p(r→, t) to directly invert the PAT imaging model. We reveal that these two reconstruction approaches, which are preconditioned versions of each other, have distinct statistical and numerical properties. Each is demonstrated to have characteristics that are advantageous to certain types of data inconsistencies. Numerical results are presented to corroborate our analysis.
AB - In many iterative algorithms for photoacoustic tomography (PAT), images are reconstructed from an integrated data function g(r→, t) rather than from the measured acoustic pressure data function p(r→, t). The integrated data function is related to the object by a spherical Radon transform, which can be inverted by use of standard reconstruction algorithms. In this work, we investigate a different reconstruction approach that utilizes the measured pressure data function p(r→, t) to directly invert the PAT imaging model. We reveal that these two reconstruction approaches, which are preconditioned versions of each other, have distinct statistical and numerical properties. Each is demonstrated to have characteristics that are advantageous to certain types of data inconsistencies. Numerical results are presented to corroborate our analysis.
KW - Image reconstruction
KW - Photoacoustic tomography
UR - http://www.scopus.com/inward/record.url?scp=34247397541&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247397541&partnerID=8YFLogxK
U2 - 10.1117/12.700930
DO - 10.1117/12.700930
M3 - Conference contribution
AN - SCOPUS:34247397541
SN - 081946550X
SN - 9780819465504
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Photons Plus Ultrasound
T2 - Photons Plus Ultrasound: Imaging and Sensing 2007: The Eighth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics
Y2 - 21 January 2007 through 24 January 2007
ER -