计划靶体积；
At the same time, a forced dismount invalidates all open handles to files on the target volume.
同时，强制卸载会导致所有目标卷上打开的文件句柄失效。
A lock can fail, for example, if files on the target volume are currently opened by other programs.
锁定会有失败的情况，例如，当目标卷上的文件正被其他的程序打开。
The advantage of IMRT is to protect organs at risk and to create enough dose in the target volume.
它的优点是更好的保护紧要器官，使靶区达到足够的剂量。
The impact of PET/CT on target volume delineation and dose distributions to normal lung tissue was analyzed.
分析PET/CT融合图像对肿瘤靶区勾画以及对正常肺组织照射剂量分布的影响。
Conclusion According to the target volume and the location of the tumor, different treatment plans should be applied.
结论：根据靶体积及肿瘤部位的不同，采用不同的计划方法。
All plans were compared according to the planning target volume coverage, dose-volume histogram and other dosimetric parameters of normal tissues.
根据计划靶区的等剂量分布、体积-剂量直方图以及其他的剂量学指标，比较两种不同治疗计划的优劣。
The entire process of radiotherapy consists of: the identification of planning target volume, the design and implementation of the treatment plan.
放射治疗全过程主要包括患者靶区的确定、治疗计划的设计和治疗计划的执行。
Conclusion: in spiral ct simulator scan, using overlapping reconstruction with thin slice is advisable in determining gross target volume of tumor.
结论：在螺旋CT模拟扫描中，采用薄层的重叠重建在肿瘤靶区体积的制定中是切实可行的。
For a target volume larger than one shot, multiple shots can be used to cover the entire target. In practice, most target volumes are treated with 1 to 15 shots.
如果治疗的区域大于一个单位的治疗区域，就需要用多次照射来覆盖整个治疗区域，在实践中，大多数的目标体积被照射1至15次。
Through accurately designed conformal portals, the irradiation target volume would be designed more rational, and the near important organs can be shielded effectively.
通过精确的适形设野，可使照射靶区设计更合理，并更有效地遮挡邻近重要器官。
Methods Using a homogeneity water equivalent rectangular phantom, the dose gradients at the interface of target volume and normal tissue was evaluated under different scatter radii.
方法采用均质水等效矩形体模，在不同散射半径条件下观察靶区和正常组织界面上的剂量梯度随散射半径的变化。
Radiotherapeutic plan was worked out and dosage distribution were set on the basis of the carcinoma position, clinical target volume, health condition of patients and therapeutic aim.
根据肿瘤的位置、临床靶体积、病人的身体状况与治疗目的，制定放射治疗计划及调整剂量分布。
Many factors work on the target volume calculation, such as PET image acquisition mode, scatter correction, attenuation correction, reconstruction method, image display mode, positron pharmacy.
靶组织体积的计算受PET图像采集模式，散射校正方法，衰减校正方法，重建技术，图像显示模式，正电子药物等因素影响。
Many factors work on the target volume calculation, such as PET image acquisition mode, scatter correction, attenuation correction, reconstruction method, image display mode, positron pharmacy.
靶组织体积的计算受PET图像采集模式，散射校正方法，衰减校正方法，重建技术，图像显示模式，正电子药物等因素影响。
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