target volume meaning in English

靶区
目标涵容
目标体积

Insufficient space on target volume
目标卷上空间不足。
The major quality assurance programs include radiation protection of personnel and patients , safe operations , maintenance of the medical accelerator , and an accurate dose delivery to the target volume
主要的品质保证项目包括有病人和治疗人员的幅射防护、医用直线加速器的安全操作和维护以及准确的肿瘤照射剂量。