GTV

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

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

肺癌PET-CT模拟定位靶区勾画探讨

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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。

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Thanks to easy connections with GTV, Eurostar trains even offer two seasonal destinations: sunny Avignon during summertime and the French Alps in winter where you could enjoy the snowy slopes.

由于和TGV（巴黎至里昂间的城际特快）轻松对接，欧洲之星列车甚至提供了2个季节性的站点：在夏季可以送你到阳光遍地的阿维尼翁，在冬季可以送你到法国阿尔卑斯山领略雪山美景。

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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。

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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.

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The bias of marginal dose and GTV mould were evaluated by analyzing the process of conforming GTV mould and manual multi-leaf conformer ( MLC).

分析手动多叶光栅（MLC）摆位及GTV模具制作过程，计算GTV模具误差及边缘剂量误差。

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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。

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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。

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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。

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