The advantage of IMRT is to protect organs at risk and to create enough dose in the target volume.

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。

Lower esophageal target volume in the Y axis, X axis, Z axis movement and lesion size.

下段食管癌靶区在Y轴、X轴、Z轴方向的移动与病变大小有关。

Measuring planning target volume margin in kV cone beam CT guided three-dimensional conformal radiotherapy of brain metastases carcinoma

千伏锥形束CT测量脑转移瘤放疗计划靶区外放研究

A Proposal of Dose-prescription for Clinical Target Volume of NSCLC

非小细胞肺癌亚临床病变剂量处方的建议

CONCLUSIONS: The 3D plans have pitfalls of geometric miss or over coverage of target volume.

结论：3D计划存在遗漏靶区或过度扩大靶区的缺陷。

Influence of CT/ MRI fusion image on target volume and 3-D conformal radiotherapy in nasopharyngeal carcinoma

CT/MRI影像融合对鼻咽癌肿瘤靶区及三维适形治疗影响

Factors Influencing Clinical Target Volume Delineation of Intact Breast in Intensity-modulated Radiotherapy for Breast Cancer

影响乳腺癌调强适形放射治疗全乳临床靶区确定的因素

Considered of pathology, only isocenter number and target volume significantly affected the tumor control interval.

如果考虑到肿瘤恶性程度，只有等中心数和肿瘤体积对肿瘤控制时间有显著影响。

The 20 Gy isodose line covered the target volume.

20Gy的等剂量线包绕靶区。

Application of PET-CT in delineation of radiotherapy planning target volume for glioma

PET-CT在脑胶质瘤放射治疗靶区确定中的应用

Three-dimensional margin expansion RFOM gross tumour volume to planning target volume

从肿瘤体积到计划靶体积的三维边缘扩展

Prospective Trial of Target Volume Delineation for Radiotherapy in Nasopharyngeal Carcinoma

鼻咽癌照射靶体积划定的临床探讨

Results 1. The dose distribution of the improved plan could meet the requirements for the target volume.

结果（1）改进方案可满足鼻咽和颈部计划靶体积的剂量要求。

A Study of Planning Target Volume Determination in Three-Dimensional Conformal Radiotherapy for Nasopharyngeal Carcinoma

鼻咽癌三维适形放疗计划靶体积确定的研究

Advances in research on biological target volume and conformal intensity-modulated radiotherapy

生物靶区与生物适形放疗研究进展

Local control rate of nasopharyngeal cancer was positively correlated with the target volume dose.

鼻咽癌的局部控制率与靶体积的照射剂量呈正相关。

Effects of Spiral CT Reconstruction Interval on Gross Target Volume of Tumor

螺旋CT重建间隔对肿瘤靶区体积的影响

Relationship Comparative Study Between Prescription Volume and Target Volume in Gamma Knife Dose Planning

伽玛刀剂量计划系统照射容积和靶区容积的相关性比较

The Application Research of Optical Flow Method in Target Volume Motion Image Registration

光流法在靶区运动图像配准中的应用研究

Regression equation shows that one-knob linear regression coefficient for welding current target signal and welding voltage target signal in CO_2 welding process will increase with an increase in ( welding) wire diameter, but constants of regression equation will decrease.

回归方程表明，CO2焊接随焊丝直径增加，其焊接电流目标信号与焊接电压目标信号的一元线性回归系数增加，回归方程的常数项减小。