Battista J J, Bronskill M J
Phys Med Biol. 1981 Jan;26(1):81-99. doi: 10.1088/0031-9155/26/1/009.
A Compton scatter scanner has been developed to image electron density distributions of transverse body sections. The imaging performance of this device has been measured and compared with calculated limits and with the present capabilities of X-ray computed tomographic (CT) scanners. The use of Compton scatter images in radiotherapy dose calculations has been investigated and a calibration curve has also been measured from patient images to convert CT number data to electron densities for tissues in vivo. Images have been produced with a spatial resolution of 0.5 cm and an electron density accuracy of 4.3% for a radiation dose of 0.11 Gy (11 rad) to the patient. However, little potential remains for further development of the Compton scatter technique for whole-body imaging.
已开发出一种康普顿散射扫描仪，用于对人体横断面的电子密度分布进行成像。已对该设备的成像性能进行了测量，并与计算得出的极限以及X射线计算机断层扫描（CT）扫描仪的当前性能进行了比较。已研究了康普顿散射图像在放射治疗剂量计算中的应用，并且还从患者图像测量了校准曲线，以将CT数值数据转换为体内组织的电子密度。已生成的图像空间分辨率为0.5厘米，在向患者施加0.11戈瑞（11拉德）的辐射剂量时，电子密度精度为4.3%。然而，康普顿散射技术用于全身成像的进一步发展潜力不大。
