Pesznyák Csilla, Póti Zsuzsa
Fôvárosi Onkoradiológiai Központ, Budapest 1145, Hungary.
Magy Onkol. 2006;50(4):341-4. Epub 2007 Jan 10.
To work out a craniospinal target volume definition and radiotherapy which can be used in clinical practice.
This technique has been applied in the Municipal Center of Oncoradiology since 2004 for total cerebral and spinal (neuroaxis) radiation. The individual radiation treatment plans were carried out using the CadPlan (Varian) 3D planning system with linear accelerator, in 3D on the basis of CT. The CT slices were prepared at 1 cm distance. The target volume and the organs at risk (OAR) were marked in slices. To delineate the field asymmetrical blending and multileaf collimator (MLC) were applied. Depending on the shape and size of the target, two or more field matching were made with the new technique.
The dose distribution in the target volume and the OAR were controlled in the coronary, sagittal and horizontal views and with dose volume histograms (DVH).
The condition for applying this technique is the accurate adjustment of digital simulator picture, field-control picture and DRR (digital reconstructed radiogram).
制定一种可用于临床实践的颅脊髓靶区体积定义和放射治疗方法。
自2004年起，该技术已在市肿瘤放射治疗中心应用于全脑和脊髓（神经轴）放疗。使用CadPlan（瓦里安）3D计划系统和直线加速器，基于CT进行三维个体放射治疗计划。CT扫描层厚为1cm。在扫描层面上标记靶区体积和危及器官（OAR）。应用不对称野融合和多叶准直器（MLC）来勾画射野。根据靶区的形状和大小，采用新技术进行两个或更多野的匹配。
通过冠状面、矢状面和横断面视图以及剂量体积直方图（DVH）来控制靶区体积和危及器官内的剂量分布。
应用该技术的条件是精确调整数字模拟图像、射野控制图像和数字重建影像（DRR）。
