常用三个不同指标描述CT检查辐射剂量:辐射剂量峰值(PRD),多次扫描平均剂量(MSAD)、和CT剂量标准(CTDI)。利用以往报道的胶片条剂量测量技术测量层面辐射剂量和PRD、MSAD、和CTDI。将预先裁成的直接曝光X线胶片条放置在不透光的支架上,用于在空气中和常规CTDI体模内测量曝光。利用与作者采用的电子束CT匹配的常规X线球管的光谱特征对胶片校正。曝光后,用自 Three different indicators are commonly used to describe CT examination of radiation dose: peak radiation dose (PRD), multiple scan average dose (MSAD), and CT dose standard (CTDI). Lateral radiation dose and PRD, MSAD, and CTDI were measured using previously reported film strip dose measurement techniques. Pre-cut direct exposure X-ray film strips were placed on a light-tight holder for exposure measurement in air and in a conventional CTDI phantom. The film is calibrated using the spectral characteristics of a conventional X-ray tube that matches the author’s electron beam CT. After exposure, use since