Chinese Journal of Lasers, Volume. 51, Issue 5, 0504001(2024)
Laser Tomography Imaging and Optimization of Scanning Parameters for Ultrasound Field
Figures & Tables(12)
Fig. 2. Simulation results of near-field length for three transducers. (a) 86 kHz; (b) 100 kHz; (c) 200 kHz
Fig. 3. Simulation of radial sound field distribution for three transducers at corresponding far-field positions. (a) 86 kHz transducer at 4 cm; (b) 100 kHz transducer at 7 cm; (c) 200 kHz transducer at 10 cm
Fig. 4. Simulated reconstruction results of sound field for 100 kHz transducer using FBP algorithm under different scanning resolutions
Fig. 5. Control framework and components of sound field automatic scanning system
Fig. 8. Comparison of sound field measurement results between microphone and laser-based methods. (a) Microphone method; (b) LDV method; (c) comparison of radial sound pressure distribution
Fig. 9. Experimental reconstruction results of sound field for three transducers at different frequencies and resolutions. (a) 86 kHz; (b) 100 kHz; (c) 200 kHz
Fig. 10. Comparison of simulated and experimental radial sound pressure distributions of reconstructed sound field at different resolutions. (a) 86 kHz; (b) 100 kHz; (c) 200 kHz
Table 1. Evaluation indicators of sound field reconstruction images under different scanning resolutions
View tableTable 1. Evaluation indicators of sound field reconstruction images under different scanning resolutions
Scanning parameter 86 kHz 100 kHz 200 kHz SSIM MAE SNR SSIM MAE SNR SSIM MAE SNR 1 mm, 5° 0.769 0.034 18.2 0.668 0.041 17.3 0.655 0.021 18.2 1 mm, 10° 0.706 0.039 17.5 0.659 0.042 17.1 0.621 0.023 17.8 1 mm, 15° 0.499 0.104 13.3 0.616 0.051 16.3 0.551 0.035 16.0 1 mm, 20° 0.340 0.340 8.1 0.531 0.074 14.7 0.452 0.075 12.7 2 mm, 5° 0.758 0.078 14.4 0.700 0.042 17.0 0.596 0.030 16.5 2 mm, 10° 0.751 0.078 14.4 0.703 0.042 17.0 0.583 0.030 16.5 2 mm, 15° 0.604 0.102 13.2 0.694 0.043 16.9 0.537 0.035 15.9 2 mm, 20° 0.408 0.208 10.1 0.601 0.057 15.6 0.464 0.054 13.9 3 mm, 5° 0.646 0.163 11.1 0.655 0.075 14.3 0.564 0.057 13.6 3 mm, 10° 0.602 0.165 11.0 0.649 0.075 14.3 0.568 0.056 13.6 3 mm, 15° 0.608 0.169 10.9 0.643 0.077 14.2 0.514 0.059 13.4 3 mm, 20° 0.413 0.207 10.0 0.608 0.081 14.0 0.501 0.065 13.0 4 mm, 5° 0.550 0.283 8.0 0.585 0.127 11.4 0.604 0.085 11.2 4 mm, 10° 0.542 0.284 8.0 0.581 0.128 11.4 0.613 0.085 11.2 4 mm, 15° 0.543 0.287 8.0 0.598 0.127 11.4 0.592 0.085 11.2 4 mm, 20° 0.483 0.295 7.8 0.560 0.131 11.2 0.554 0.089 11.0
Table 2. Selection of sound field scanning parameters under different conditions
View tableTable 2. Selection of sound field scanning parameters under different conditions
Frequency of transducer /kHz The optimal parameters for requiring close to original sound field with minimal distortion and clear image 86 Δx=1 mm, Δθ=10° 100 Δx=2 mm, Δθ=10° 200 Δx=2 mm, Δθ=10°
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Xiaoli Zhang, Chenghao He, Xiujuan Feng, Hui Zhang, Feng Niu, Longbiao He. Laser Tomography Imaging and Optimization of Scanning Parameters for Ultrasound Field[J]. Chinese Journal of Lasers, 2024, 51(5): 0504001
Paper Information
Category: Measurement and metrology
Received: Jun. 19, 2023
Accepted: Aug. 4, 2023
Published Online: Mar. 1, 2024
The Author Email: He Longbiao (helb@nim.ac.cn)
CSTR:32183.14.CJL230926
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