Ai M, Cheng J, Karimi D, Salcudean SE, Rohling R, Abolmaesumi P, Tang S. Investigation of photoacoustic tomography reconstruction with a limited view from linear array.
JOURNAL OF BIOMEDICAL OPTICS 2021;
26:JBO-210083RR. [PMID:
34585543 PMCID:
PMC8477256 DOI:
10.1117/1.jbo.26.9.096009]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
SIGNIFICANCE
As linear array transducers are widely used in clinical ultrasound imaging, photoacoustic tomography (PAT) with linear arrays is similarly suitable for clinical applications. However, due to the limited-view problem, a linear array has limited performance and leads to artifacts and blurring, which has hindered its broader application. There is a need to address the limited-view problem in PAT imaging with linear arrays.
AIM
We investigate potential approaches for improving PAT reconstruction from linear array, by optimizing the detection geometry and implementing iterative reconstruction.
APPROACH
PAT imaging with a single-array, dual-probe configurations in parallel-shape and L-shape, and square-shape configuration are compared in simulations and phantom experiments. An iterative model-based algorithm based on the variance-reduced stochastic gradient descent (VR-SGD) method is implemented. The optimum configuration found in simulation is validated on phantom experiments.
RESULTS
PAT imaging with dual-probe detection and VR-SGD algorithm is found to improve the limited-view problem compared to a single probe and provide comparable performance as full-view geometry in simulation. This configuration is validated in experiments where more complete structure is obtained with reduced artifacts compared with a single array.
CONCLUSIONS
PAT with dual-probe detection and iterative reconstruction is a promising solution to the limited-view problem of linear arrays.
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