Image Guided Radiation Therapy (IGRT) Practice Patterns and IGRT's Impact on Workflow and Treatment Planning: Results From a National Survey of American Society for Radiation Oncology Members
Image Guided Radiation Therapy (IGRT) Practice Patterns and IGRT's Impact on Workflow and Treatment Planning: Results From a National Survey of American Society for Radiation Oncology Members
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DOI：
10.1016/j.ijrobp.2015.09.035
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发表时间：
2016-03-15
影响因子：
7
通讯作者：
Holland, John M.
中科院分区：
文献类型：
--
作者：
Nabavizadeh, Nima;Elliott, David A.;Holland, John M.
目的：调查图像引导放射治疗（IGRT）实践模式，以及IGRT对临床工作流程和计划治疗体积（PTVs）的影响。方法和材料：将5979份治疗部位特异性调查的样本通过电子邮件发送给美国放射肿瘤学会（ASTRO）的会员，问题涉及IGRT模式/频率、PTV扩展、图像验证方法，和IGRT的感知效用/价值。在线图像验证定义为医生在治疗前获得并审查的图像。离线图像验证被定义为治疗前获得的图像，然后由医生在下一个treatment.Results：601可评价的反应，95%的报告IGRT功能以外的门静脉成像。大多数（92%）使用体积成像（锥形束CT [CBCT]或兆伏级CT），体积成像是除乳腺外所有部位最常用的模式。大多数受访者接受了头部和颈部调强放射治疗（IMRT）、肺部三维适形放射治疗或IMRT、肛门或骨盆IMRT、前列腺IMRT和前列腺窝IMRT的每日CBCT。对于所有研究中心，仅在前几个部分最常进行在线图像验证。IGRT频率或CBCT利用率与临床治疗量与PTV扩张之间无相关性。208学术放射肿瘤学家谁报告与居民合作，只有41%的学员参与IGRT verification processes.Conclusion：共识指南，进一步的循证方法PTV边缘选择，更大的居民参与需要标准化使用IGRT的做法。(c)2016 Elsevier Inc. All rights reserved.
Purpose: To survey image guided radiation therapy (IGRT) practice patterns, as well as IGRT's impact on clinical workflow and planning treatment volumes (PTVs).Methods and Materials: A sample of 5979 treatment site-specific surveys was e-mailed to the membership of the American Society for Radiation Oncology (ASTRO), with questions pertaining to IGRT modality/frequency, PTV expansions, method of image verification, and perceived utility/value of IGRT. On-line image verification was defined as images obtained and reviewed by the physician before treatment. Off-line image verification was defined as images obtained before treatment and then reviewed by the physician before the next treatment.Results: Of 601 evaluable responses, 95% reported IGRT capabilities other than portal imaging. The majority (92%) used volumetric imaging (cone-beam CT [CBCT] or megavoltage CT), with volumetric imaging being the most commonly used modality for all sites except breast. The majority of respondents obtained daily CBCTs for head and neck intensity modulated radiation therapy (IMRT), lung 3-dimensional conformal radiation therapy or IMRT, anus or pelvis IMRT, prostate IMRT, and prostatic fossa IMRT. For all sites, on-line image verification was most frequently performed during the first few fractions only. No association was seen between IGRT frequency or CBCT utilization and clinical treatment volume to PTV expansions. Of the 208 academic radiation oncologists who reported working with residents, only 41% reported trainee involvement in IGRT verification processes.Conclusion: Consensus guidelines, further evidence-based approaches for PTV margin selection, and greater resident involvement are needed for standardized use of IGRT practices. (c) 2016 Elsevier Inc. All rights reserved.