Nagata Y, Nishidai T, Abe M, Takahashi M, Okajima K, Yamaoka N, Ishihara H, Kubo Y, Ohta H, Kazusa C
Department of Radiology, Kyoto University, Japan.
Int J Radiat Oncol Biol Phys. 1990 Mar;18(3):505-13. doi: 10.1016/0360-3016(90)90053-m.
We have performed radiotherapy treatment planning (RTP) with a new system called CT simulator in 72 patients. With the system, RTP is performed with the patient lying on the CT couch within a short period of time. All the CT images scanned were immediately transported to the multi-image monitors and to the treatment planning device. Radiotherapy treatment planning could be performed not only at the beam center but also at any CT slice. Using a laser-beam field projector, field outlines were drawn over the patient's skin. In clinical use, the system was useful for cases in which a target lies adjacent to dose limiting organs, cases with a complicated target shape, cases with complicated dose distribution curves, and cases treated with tangential fields. This system enables us to make optimum use of CT information and to make accurate 3-dimensional treatment planning programs.
我们使用一种名为CT模拟机的新系统，对72例患者进行了放射治疗计划（RTP）。通过该系统，患者躺在CT检查床上，可在短时间内完成放射治疗计划。扫描的所有CT图像会立即传输至多图像监视器和治疗计划设备。放射治疗计划不仅可以在射束中心进行，也可以在任何CT切片上进行。使用激光束野投影仪，在患者皮肤上画出野轮廓。在临床应用中，该系统对于靶区毗邻剂量限制器官的病例、靶区形状复杂的病例、剂量分布曲线复杂的病例以及采用切线野治疗的病例均很有用。该系统使我们能够充分利用CT信息，并制定准确的三维治疗计划方案。
