Carlsson G A, Dance D R, Persliden J, Sandborg M
Department of Radiation Physics, IMV, Faculty of Health Sciences, Linkoping, Sweden.
Appl Radiat Isot. 1999 Jan;50(1):39-62. doi: 10.1016/s0969-8043(98)00087-6.
The concept of energy imparted by ionizing radiation to the matter in a volume is analyzed and methods to determine the energy imparted epsilon to the patient are reviewed, in particular, determinations based on measurements of the air kerma integrated over beam area [the kerma-area-product (KAP)] and calculations needed to derive conversion factors epsilon/KAP. The energy imparted to the image receptor, epsilon rec, including the statistical aspects of the concept, and the effect of epsilon rec on image quality and patient dose are also analysed. Finally, use of the energy imparted to the patient as a risk indicator is discussed.
分析了电离辐射传递给某一体积内物质的能量概念，并回顾了确定传递给患者的能量ε的方法，特别是基于对射束面积上空气比释动能积分（比释动能面积乘积，KAP）的测量以及推导转换因子ε/KAP所需计算的确定方法。还分析了传递给图像受体的能量εrec，包括该概念的统计方面，以及εrec对图像质量和患者剂量的影响。最后，讨论了将传递给患者的能量用作风险指标的情况。
