为了研究不同成像深度对光声层析成像质量的影响，利用多元线性阵列探测器在有限方位进行探测成像。由仿真和实验结果表明，吸收体离探测器越近，其成像效果较好，当多元线性阵列探测器的尺寸与成像深度比小于1时，重建图像畸变明显。在这种情况下，采用旋转扫描探测，其成像效果明显提高。该研究结果对光声层析成像扫描轨迹的设计、成像效果评估具有较好的参考价值。

In order to research on the influence of imaging depth on photoacoustic tomography, the multiple linear array detectors is used for detection imaging at limited-view. Both simulation and experimental results show that the reconstructed image qualities are better as the absorber is closer to the detectors. Image distortion becomes obvious when the ratio of detectors size to the imaging depth is less than 1. We also demonstrated that the image distortion can be significantly reduced by rotating the multiple linear array detectors. This study helps the design of scanning strategy and the evaluation of reconstructed images.