Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Suite H118, New York, NY 10065, USA.
Cardiovasc Intervent Radiol. 2013 Aug;36(4):1063-7. doi: 10.1007/s00270-012-0515-9. Epub 2012 Nov 15.
To quantify radiation exposure to the primary operator and staff during PET/CT-guided interventional procedures.
In this prospective study, 12 patients underwent PET/CT-guided interventions over a 6 month period. Radiation exposure was measured for the primary operator, the radiology technologist, and the nurse anesthetist by means of optically stimulated luminescence dosimeters. Radiation exposure was correlated with the procedure time and the use of in-room image guidance (CT fluoroscopy or ultrasound).
The median effective dose was 0.02 (range 0-0.13) mSv for the primary operator, 0.01 (range 0-0.05) mSv for the nurse anesthetist, and 0.02 (range 0-0.05) mSv for the radiology technologist. The median extremity dose equivalent for the operator was 0.05 (range 0-0.62) mSv. Radiation exposure correlated with procedure duration and with the use of in-room image guidance. The median operator effective dose for the procedure was 0.015 mSv when conventional biopsy mode CT was used, compared to 0.06 mSv for in-room image guidance, although this did not achieve statistical significance as a result of the small sample size (p = 0.06).
The operator dose from PET/CT-guided procedures is not significantly different than typical doses from fluoroscopically guided procedures. The major determinant of radiation exposure to the operator from PET/CT-guided interventional procedures is time spent in close proximity to the patient.
定量测量在 PET/CT 引导下介入操作过程中主要操作人员和工作人员的辐射暴露量。
在这项前瞻性研究中，12 名患者在 6 个月的时间内接受了 PET/CT 引导下的介入操作。通过光激励发光剂量计测量主要操作人员、放射技师和护士麻醉师的辐射暴露量。将辐射暴露量与操作时间以及使用室内图像引导（CT 透视或超声）相关联。
主要操作人员的有效剂量中位数为 0.02（范围 0-0.13）mSv，护士麻醉师为 0.01（范围 0-0.05）mSv，放射技师为 0.02（范围 0-0.05）mSv。操作人员的手部剂量当量中位数为 0.05（范围 0-0.62）mSv。辐射暴露量与操作持续时间以及使用室内图像引导相关。当使用传统活检模式 CT 时，操作的中位有效剂量为 0.015 mSv，而使用室内图像引导时为 0.06 mSv，尽管由于样本量小，这没有达到统计学意义（p = 0.06）。
与透视引导下的操作相比，来自 PET/CT 引导下操作的操作人员剂量没有显著差异。来自 PET/CT 引导下介入操作中操作人员的辐射暴露的主要决定因素是与患者近距离接触的时间。
