Chinese Journal of Lasers, Volume. 48, Issue 16, 1607001(2021)
Reconstruction Algorithm Based on a Virtual Parallel-Projection Model for Photoacoustic Tomography Using an Ultrasonic Transducer with a Large Active Surface
Fig. 1. Schematic of photoacoustic tomography system with multi-view light-sheet illuminations
Fig. 2. Discretization of the forward model in reconstruction procedures and the schematic of calculating the minimum rotation radius of the transducer. (a) Discretization of the forward model; (b) calculating the minimum rotation radius of the transducer
Fig. 3. Models of virtual parallel-projection and linear interpolation. (a) Discretization of the forward model by MB-VP; (b) interpolation schematic of the weight between each point on parallel-projection line and four adjacent points
Fig. 4. Results of numerical simulation. (a) Exact image; (b) reconstructed result by MB method; (c) reconstructed result by MB-SE method; (d) reconstructed result by MB-VP method; (e) profile line
Fig. 5. Profiles along #1, #2, #3,#4, and #5 lines in
Fig. 6. MB-SE reconstructed images of microsphere with a distance of 6 mm from the center. (a) Seven surface elements; (b) fifteen surface elements
Fig. 7. Experimental results of phantom. (a) Reconstructed result by MB; (b) reconstructed result by MB-SE; (c) reconstructed result by MB-VP; (d)--(f) profiles of P1, P2, and P3 along x-axis, respectively
Fig. 8. Reconstructed results of in vivo mouse. (a) MB; (b) MB-SE; (c) MB-VP; (d)--(f) zoom-in images of the dotted rectangular areas
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Jiao Li, Shichao Miao, Shaoze Song, Tong Lu, Tingting Chen, Feng Gao. Reconstruction Algorithm Based on a Virtual Parallel-Projection Model for Photoacoustic Tomography Using an Ultrasonic Transducer with a Large Active Surface[J]. Chinese Journal of Lasers, 2021, 48(16): 1607001
Category: biomedical photonics and laser medicine
Received: Dec. 28, 2020
Accepted: Feb. 22, 2021
Published Online: Jul. 30, 2021
The Author Email: Jiao Li (jiaoli@tju.edu.cn)