GTV

To investigate the impact of gross tumor volume ( GTV) on the short-term response of radiotherapy for esophageal carcinoma.

观察食管癌大体肿瘤体积（GTV）大小对放射治疗近期疗效的影响。

The GTV delineation of lung cancer's PET-CT simulation

肺癌PET-CT模拟定位靶区勾画探讨

Conclusion PET/ CT is useful for improving the accuracy of GTV delineation for the protection of the normal tissues during radiotherapy.

结论PET/CT图像融合能提高骨转移瘤GTV勾画的精确性和重复性，从而减少对周围正常组织损伤而增加放射治疗的增益比。

The dose distribution in nasopharyngesl GTV and CTV weresatisfactory both in CT simulated and conventional planning.

[结果]不论是CT模拟定位还是X- 线常规模拟定位,鼻咽GTV和CTV均可有满意的剂量分布.

Comparison of Pathological T-staging with Gross Tumor Volume ( GTV) of Esophageal Cancer by CT Scanning

食管癌肿瘤体积与病理T分期对照研究

Conclusion: MR was more accurate than CT in delineating GTV of NPC.

结论MRI组勾画靶区较CT组精确。

The fractional dose and volume of GTV are independent prognostic factors for the overall survival.

分次剂量和GTV体积为影响患者生存时间的独立预后因素。

Results The dose distribution in nasopharyngeal GTV and CTV were satisfactory both in CT simulated and conventional planning.

结果不论是CT模拟计划还是常规模拟计划，鼻咽GTV和CTV均可有满意的剂量分布。