Atzinger A, Breit A
Strahlentherapie. 1982 Feb;158(2):97-102.
Since 1976, radiotherapy planning is based on computed tomography in the Radio-Oncologic Department of the hospital of Passau. Every year we have about 1200 new tumor patients, 30 to 40% of them being submitted to an individual CT planning. So we are able to evaluate about 1000 cases of CT-planned radiotherapies. The single steps of CT planning are described. The position of the patient is an important factor for CT planning as well as for the subsequent irradiation. A topogram has been mounted on the tomograph in order to find out the best position and, in order to guarantee a precise reproduction of this position, identical laser systems have been installed on the tomograph and in the irradiation room. Some examples are presented in order to describe the mode of action of these devices. Furthermore, a new control method is presented which allows to check the accuracy of field screening by means of computed tomography.
自1976年以来，德国帕绍市医院放射肿瘤科的放射治疗计划一直基于计算机断层扫描。我们每年约有1200名新肿瘤患者，其中30%至40%接受个体化CT计划。因此，我们能够评估约1000例CT计划的放射治疗病例。本文描述了CT计划的各个步骤。患者的体位对于CT计划以及后续的放射治疗来说都是一个重要因素。为了确定最佳体位，在断层扫描仪上安装了一张定位图；为了保证精确再现该体位，在断层扫描仪和放疗室都安装了相同的激光系统。文中给出了一些例子来描述这些设备的作用方式。此外，还介绍了一种新的控制方法，该方法可通过计算机断层扫描来检查射野屏蔽的准确性。
