Goldstein A
Department of Radiology, Wayne State University School of Medicine, Detroit, Michigan 48201, USA.
Med Phys. 1998 Jun;25(6):1028-32. doi: 10.1118/1.598284.
A procedure is proposed for performing noninvasive x-ray quality assessment tests on panoramic radiology equipment. A simple cardboard tube jig eliminates relative motion between the measurement system and the narrow, collimated x-ray beam. Accurate measurements of beam HVL, x-ray exposure coefficient of variation and mA linearity may be obtained. Use of the tube jig permits easy and routine monitoring of these important x-ray parameters as well as consistency checks of tube output. Film/screen contact also should be routinely checked in the clinic.
本文提出了一种对全景放射设备进行无创X射线质量评估测试的方法。一个简单的硬纸板管夹具可消除测量系统与狭窄的准直X射线束之间的相对运动。由此可以获得对束半值层、X射线曝光变异系数和毫安线性的精确测量。使用管夹具可轻松且常规地监测这些重要的X射线参数，以及对管输出进行一致性检查。临床上还应定期检查胶片/增感屏的接触情况。
