利用康普顿散射伽马射线进行断层扫描。

The use of Compton scattered gamma rays for tomography.

作者信息

Clarke R L, Milne E N, Van Dyk G

出版信息

Invest Radiol. 1976 May-Jun;11(3):225-35. doi: 10.1097/00004424-197605000-00011.

DOI:10.1097/00004424-197605000-00011

Abstract

A method of tomographic imaging of soft tissues by the use of Compton scattering of gamma rays is described. A highly collimated source (800 Ci of 60Co) and collimated detectors are used. Spatial resolutions of the order of 0.5 cm or better are achieved, with a density resoution of 2.0% to 4%. Experimental tests with dogs have shown internal organs in sagittal, coronal and transverse section. No contrast or radioactive material is required. Tests have shown that the regional dose for humans will be about 0.25 to 1 rad for one scan.

摘要

描述了一种利用伽马射线的康普顿散射对软组织进行断层成像的方法。使用了高度准直的源（800居里的钴60）和准直探测器。实现了约0.5厘米或更好的空间分辨率，密度分辨率为2.0%至4%。对狗进行的实验测试显示了矢状面、冠状面和横断面的内部器官。无需造影剂或放射性物质。测试表明，对人体进行一次扫描的局部剂量约为0.25至1拉德。