答案:D
統計:A:10,B:15,C:37,D:383,E:0
難度:非常簡單
【Klose Liu】評論
An important development in the area of simulation has been that of converting a CT scanner into a simulator. CT simulation uses a CT scanner to localize the treatment fields on the basis of the patient’s CT scans. A computer program, specifically written for simulation, automatically positions the patient couch and the laser cross-hairs to define the scans and the treatment fields.The software (as part of CT scanner or a stand-alone treatment-planning system) provides outlining of external contours, target volumes and critical structures, interactive portal displays and placement, review of multiple treatment plans, and a display of isodose distribution. This process is known as virtual simulation. 圖文出處:khans 5th p205