Kruger R A, Liu P, Fang Y R, Appledorn C R
Department of Radiology, Indiana University Medical Center, Indianapolis 46202-5111, USA.
Med Phys. 1995 Oct;22(10):1605-9. doi: 10.1118/1.597429.
The theoretical underpinnings of photoacoustic ultrasound (PAUS) reconstruction tomography are presented. A formal relationship between PAUS signals and the heterogeneous distribution of optical absorption within the object being investigated is developed. Based on this theory, a reconstruction approach, analogous to that used in x-ray computed tomography, is suggested. Initial experimental results suggest that this approach produces "reasonable" reconstructions for absorbers distributed within a narrow plane embedded within a highly scattering medium.
介绍了光声超声（PAUS）重建层析成像的理论基础。建立了PAUS信号与被研究物体内光吸收非均匀分布之间的形式关系。基于该理论，提出了一种类似于X射线计算机断层成像中使用的重建方法。初步实验结果表明，该方法对于分布在高度散射介质中嵌入的狭窄平面内的吸收体能够产生“合理的”重建图像。
