Deshpande Sudesh, Dhote D S, Kumar Rajesh, Naidu Suresh, Sutar A, Kannan V
Department of Radiation Oncology, P. D. Hinduja National Hospital and MRC, Mumbai, Maharashtra, India.
Department of Electronic, Brijalal Biyani Mahavidyalaya, Amravati, Maharashtra, India.
J Med Phys. 2015 Oct-Dec;40(4):220-5. doi: 10.4103/0971-6203.170788.
A national survey was conducted to obtain information about the use of image-guided radiotherapy (IGRT) techniques and IGRT dose measurement methods being followed at Indian radiotherapy centers. A questionnaire containing parameters relevant to use of IGRT was prepared to collect the information pertaining to (i) availability and type of IGRT delivery system, (ii) frequency of image acquisition protocol and utilization of these images for different purpose, and (iii) imaging dose measurement. The questionnaire was circulated to 75 hospitals in the country having IGRT facility, and responses of 51 centers were received. Survey results showed that among surveyed hospitals, 86% centers have IGRT facility, 78% centers have kilo voltage three-dimensional volumetric imaging. 75% of hospitals in our study do not perform computed tomography dose index measurements and 89% of centers do not perform patient dose measurements. Moreover, only 29% physicists believe IGRT dose is additional radiation burden to patient. This study has brought into focus the need to design a national protocol for IGRT dose measurement and development of indigenous tools to perform IGRT dose measurements.
开展了一项全国性调查，以获取有关印度放疗中心所采用的图像引导放射治疗（IGRT）技术及IGRT剂量测量方法的信息。编制了一份包含与IGRT使用相关参数的问卷，以收集以下方面的信息：（i）IGRT输送系统的可用性和类型；（ii）图像采集方案的频率以及这些图像用于不同目的的情况；（iii）成像剂量测量。该问卷分发给了国内75家拥有IGRT设备的医院，收到了51个中心的回复。调查结果显示，在接受调查的医院中，86%的中心拥有IGRT设备，78%的中心拥有千伏级三维容积成像设备。在我们的研究中，75%的医院未进行计算机断层扫描剂量指数测量，89%的中心未进行患者剂量测量。此外，只有29%的物理学家认为IGRT剂量是患者额外的辐射负担。这项研究凸显了设计IGRT剂量测量国家方案以及开发用于进行IGRT剂量测量的本土工具的必要性。
