Influence of limited-view scanning on depth imaging of photoacoustic tomography

doi:10.1088/1674-1056/21/1/014301

中国物理B ›› 2012, Vol. 21 ›› Issue (1): 14301-014301.doi: 10.1088/1674-1056/21/1/014301

Influence of limited-view scanning on depth imaging of photoacoustic tomography

王学鼎¹, 吴丹², 陶超², 刘晓峻²

(1)Department of Radiology, University of Michigan, Ann Arbor, Michigan 48109, USA; (2)Key Laboratory of Modern Acoustics of Ministry of Education, Nanjing University, Nanjing 210093, China

收稿日期:2011-06-14 修回日期:2011-07-27 出版日期:2012-01-15 发布日期:2012-01-20
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2012CB921504), the National Natural Science Foundation of China (Grant Nos. 10874088, 10904069, and 11028408), and the Natural Science Foundation of Jiangsu Province, China (Gran

Influence of limited-view scanning on depth imaging of photoacoustic tomography

Wu Dan(吴丹)^a), Tao Chao(陶超)^a)†, Liu Xiao-Jun(刘晓峻)^a)‡, and Wang Xue-Ding(王学鼎)^b)

^a Key Laboratory of Modern Acoustics of Ministry of Education, Nanjing University, Nanjing 210093, China; ^b Department of Radiology, University of Michigan, Ann Arbor, Michigan 48109, USA

Received:2011-06-14 Revised:2011-07-27 Online:2012-01-15 Published:2012-01-20
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2012CB921504), the National Natural Science Foundation of China (Grant Nos. 10874088, 10904069, and 11028408), and the Natural Science Foundation of Jiangsu Province, China (Gran

摘要/Abstract

摘要： We study the influence of limited-view scanning on the depth imaging of photoacoustic tomography. The situation, in which absorbers are located at different depths with respect to the limited-view scanning trajectory, is called depth imaging and is investigated in this paper. The results show that limited-view scanning causes the reconstructed intensity of deep absorbers to be weaker than that of shallow ones and that deep absorbers will be invisible if the scanning range is too small. The concept of effective scanning angle is proposed to analyse that phenomenon. We find that an effective scanning angle can well predict the relationship between scanning angle and the intensity ratio of absorbers. In addition, limited-view scanning is employed to improve image quality.

关键词: photoacoustic tomography, limited-view scanning, depth imaging, back-projection reconstruction

Abstract: We study the influence of limited-view scanning on the depth imaging of photoacoustic tomography. The situation, in which absorbers are located at different depths with respect to the limited-view scanning trajectory, is called depth imaging and is investigated in this paper. The results show that limited-view scanning causes the reconstructed intensity of deep absorbers to be weaker than that of shallow ones and that deep absorbers will be invisible if the scanning range is too small. The concept of effective scanning angle is proposed to analyse that phenomenon. We find that an effective scanning angle can well predict the relationship between scanning angle and the intensity ratio of absorbers. In addition, limited-view scanning is employed to improve image quality.

Key words: photoacoustic tomography, limited-view scanning, depth imaging, back-projection reconstruction

中图分类号: (Thermoacoustics, high temperature acoustics, photoacoustic effect)

43.35.Ud

43.20.Ks (Standing waves, resonance, normal modes) 43.60.Pt (Signal processing techniques for acoustic inverse problems)

吴丹, 陶超, 刘晓峻, 王学鼎. Influence of limited-view scanning on depth imaging of photoacoustic tomography[J]. 中国物理B, 2012, 21(1): 14301-014301.

Wu Dan(吴丹), Tao Chao(陶超), Liu Xiao-Jun(刘晓峻), and Wang Xue-Ding(王学鼎) . Influence of limited-view scanning on depth imaging of photoacoustic tomography[J]. Chin. Phys. B, 2012, 21(1): 14301-014301.

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Influence of limited-view scanning on depth imaging of photoacoustic tomography

Influence of limited-view scanning on depth imaging of photoacoustic tomography

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