Cone beam CT doses in radiotherapy patient positioning in Finland-prostate treatments.

IF 0.8 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Radiation protection dosimetry Pub Date : 2024-06-18 DOI:10.1093/rpd/ncae133

Teemu Siiskonen, Saara Alenius, Tiina Seppälä, Joonas Tikkanen, Miia Nadhum, Jarkko Ojala

引用次数: 0

Abstract

Imaging parameters, frequencies and resulting patient organ doses in treatments of prostate cancer were assessed in Finnish radiotherapy centres. Based on a questionnaire to the clinics, Monte Carlo method was used to estimate organ doses in International Commission on Radiological Protection standard phantom for prostate, bladder, rectum and femoral head. The results show that doses from cone beam computed tomography imaging have reduced compared to earlier studies and are between 3.6 and 34.5 mGy per image for the above-mentioned organs and for normal sized patients. There still is room for further optimization of the patient exposure, as many centres use the default imaging parameters, and the length of the imaged region may not be optimal for the purpose.

查看原文本刊更多论文

芬兰放射治疗病人定位中的锥形束 CT 剂量--前列腺治疗。

芬兰放射治疗中心对前列腺癌治疗中的成像参数、频率和由此产生的患者器官剂量进行了评估。根据对诊所的问卷调查，采用蒙特卡洛法估算了国际放射防护委员会标准模型中前列腺、膀胱、直肠和股骨头的器官剂量。结果表明，锥形束计算机断层扫描成像的剂量与之前的研究相比有所降低，对于上述器官和正常体型的患者，每幅图像的剂量介于 3.6 至 34.5 mGy 之间。由于许多中心使用默认的成像参数，而且成像区域的长度可能并非最佳，因此仍有进一步优化患者照射剂量的余地。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Radiation protection dosimetry 环境科学-公共卫生、环境卫生与职业卫生

CiteScore

1.40

自引率

10.00%

发文量

223

审稿时长

6-12 weeks

期刊介绍： Radiation Protection Dosimetry covers all aspects of personal and environmental dosimetry and monitoring, for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring, accident dosimetry, and dosimetry related to the protection of patients. Particular emphasis is placed on papers covering the fundamentals of dosimetry; units, radiation quantities and conversion factors. Papers covering archaeological dating are included only if the fundamental measurement method or technique, such as thermoluminescence, has direct application to personal dosimetry measurements. Papers covering the dosimetric aspects of radon or other naturally occurring radioactive materials and low level radiation are included. Animal experiments and ecological sample measurements are not included unless there is a significant relevant content reason.