Photoacoustic tomography of biological sample using phase-controlled focus algorithm

被引：0

作者：

Cai, Wanshao ^{[1
]}

Xing, Da ^{[1
]}

Tang, Zhilie ^{[1
]}

Qian, Shengyou ^{[1
]}

机构：

[1] Laser Life Sci. Inst., South China Normal Univ., Guangzhou 510631, China

来源：

Chinese Journal of Lasers B (English Edition) | 2002年 / 11卷 / 04期

关键词：

Biology - Image reconstruction - Lasers - Tissue - Tomography;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Photoacoustic (PA) imaging is a new imaging modality, which converts pressure signals received by a scanning detector to a local distribution of electromagnetic absorption density. An experiment result of a photoacoustic tomography to depths of 7 mm for a real tissue is presented, using a 532-nm pulse YAG laser. The time-resolved stress detection technique was used for PA signal detection with a high temporal resolution. A phase-controlled focus algorithm was used for image reconstruction. Images of different depth profiles in tissue were obtained. The depth resolution was 30 μm and could be up to 10 μm using a wide-band tranducer.

引用

页码：311 / 314

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