Open AccessCoherent-weighted three-dimensional image reconstruction in linear-array-based photoacoustic tomography
Author(s) -
Depeng Wang,
Yuehang Wang,
Yang Zhou,
Jonathan F. Lovell,
Jun Xia
Publication year - 2016
Publication title -
biomedical optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.7.001957
Subject(s) - iterative reconstruction , transducer , computer science , imaging phantom , photoacoustic tomography , weighting , computer vision , optics , artificial intelligence , image resolution , tomography , photoacoustic imaging in biomedicine , acoustics , physics
While the majority of photoacoustic imaging systems used custom-made transducer arrays, commercially-available linear transducer arrays hold the benefits of affordable price, handheld convenience and wide clinical recognition. They are not widely used in photoacoustic imaging primarily because of the poor elevation resolution. Here, without modifying the imaging geometry and system, we propose addressing this limitation purely through image reconstruction. Our approach is based on the integration of two advanced image reconstruction techniques: focal-line-based three-dimensional image reconstruction and coherent weighting. We first numerically validated our approach through simulation and then experimentally tested it in phantom and in vivo. Both simulation and experimental results proved that the method can significantly improve the elevation resolution (up to 4 times in our experiment) and enhance object contrast.