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PET/CT功能影像在肺癌及头颈部肿瘤放疗靶区勾画中的应用及进展 被引量:3

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摘要 随着3DCRT、IMRT、VMAT等放射治疗设备投入临床使用,肿瘤放射治疗进入精确放疗时代,对放疗靶区的勾画必然提出了更高的要求,但精准的肿瘤靶区大小(GTV)依赖于影像学的支持。目前,基于单纯定位CT影像放疗计划可能会扩大或者遗漏肿瘤照射区域,造成肿瘤周围正常组织损伤范围扩大或肿瘤局部复发风险增加,失去了精确放疗的优势。PET/CT正逐步在临床上应用,其优势在于能提供CT无法提供的功能影像,辅助判断微小病灶及亚临床病灶。因此,利用PET/CT功能影像融合CT参与放疗靶区勾画及放疗计划制定,可以提高肿瘤精确放疗适形度和准确性,对提高肿瘤靶区剂量,降低肿瘤周围组织剂量,减低肿瘤靶区遗漏风险,减少周围正常组织照射范围,保护重要器官有着极其重要的作用。PET/CT将成为肿瘤放射治疗的重要组成部分。
机构地区 成都复兴医院
出处 《中外医疗》 2012年第23期184-186,共3页 China & Foreign Medical Treatment
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参考文献21

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