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Journal of Korean Neurosurgical Society 2011;49(1): 37-42.
doi: https://doi.org/10.3340/jkns.2011.49.1.37
Fluoroscopic Radiation Exposure during Percutaneous Kyphoplasty.
Hyun Chul Choi
Department of Neurosurgery & Spine Center, Sacred Heart Hospital, College of Medicine, The Hallym University of Korea, Anyang, Korea. chcmc@hanmail.net
ABSTRACT
OBJECTIVE
The author measured levels of fluoroscopic radiation exposure to the surgeon's body based on the different beam directions during kyphoplasty.
METHODS
This is an observational study. A series of 84 patients (96 vertebral bodies) were treated with kyphoplasty over one year. The patients were divided into four groups based on the horizontal and vertical directions of the X-Ray beams. We measured radiation exposure with the seven dosimetry badges which were worn by the surgeon in each group (total of 28 badges). Twenty-four procedures were measured in each group. Cumulative dose and dose rates were compared between groups.
RESULTS
Fluoroscopic radiation is received by the operator in real-time for approximately 50% (half) of the operation time. Thyroid protectors and lead aprons can block radiation almost completely. The largest dose was received in the chest irrespective of beam directions. The lowest level of radiation were received when X-ray tube was away from the surgeon and beneath the bed (dose rate of head, neck, chest, abdomen and knee : 0.2986, 0.2828, 0.9711, 0.8977, 0.8168 mSv, respectively). The radiation differences between each group were approximately 2.7-10 folds.
CONCLUSION
When fluoroscopic guided-KP is performed, the X-Ray tube should be positioned on the opposite side of the operator and below the table, otherwise the received radiation to the surgeon's body would be 2.7-10 times higher than such condition.
Key Words: Kyphoplasty; Radiation exposure; Fluoroscopic guidance; Dosimetry; Radiation safety; Fluoroscopy
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