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ID 113360
Title Alternative
X線透視による医療者及び患者の被曝量の検討 : 未固定遺体を用いた研究
Author
Morimoto, Masatoshi Tokushima University
Keywords
radiation exposure dose
fluoroscopy
cadaver study
minimally invasive surgery
direct radiation
scatter radiation
Content Type
Thesis or Dissertation
Description
Study Design. Using fresh cadavers, real-time dosimeters were used to estimate the radiation exposure dose from C-arm fluoroscopy to surgeons, medical staff, and patients during various procedures.
Objective. To evaluate the radiation exposure dose from C-arm fluoroscopy, which is used to generate real-time images of the human body, under a variety of conditions and in different areas.
Summary of Background Data. Awareness of the harmful effects of long-term low-dose radiation is rising. There are no all-inclusive reports evaluating the radiation exposure dose to medical staff associated with fluoroscopic procedures which can accurately simulate the real clinical situation.
Methods. Seven fresh cadavers were irradiated for 1, 3, and 5 min with C-arm fluoroscopy. The X-ray source was positioned under the table, over the table, and laterally. Radiation exposure doses were measured at different simulated areas such as the center area, and the surgeon’s hand or thyroid gland.
Results. There were significant differences in the radiation exposure dose under different conditions and for different irradiated areas. The risk of direct and scatter radiation exposure was the greatest with the lateral position, which increased by more than 200 times and more than 30 times, respectively, compared with that from a position under the table. Direct radiation was attenuated to less than one-hundredth after passing through the body of the cadaver. All radiation exposure doses were positively correlated with total exposure time.
Conclusions. Our study revealed the direct and scatter radiation exposure dose from C-arm fluoroscopy to different areas under a variety of conditions when fluoroscopy is used to generate real-time images of the human body. Our results serve as a guide for medical staff to understand the risk of radiation exposure during each fluoroscopic procedure. Medical staff, especially surgeons, should consider how to protect themselves and reduce radiation exposure by using appropriate shielding.
Journal Title
Spine
ISSN
03622436
15281159
NCID
AA0084801X
AA12431865
Publisher
Lippincott Williams & Wilkins|Wolters Kluwer Health, Inc.
Volume
41
Issue
15
Start Page
1254
End Page
1260
Published Date
2016-08-01
Remark
内容要旨・審査要旨・論文本文の公開
本論文は,著者Kazuta Yamashitaの学位論文として提出され,学位審査・授与の対象となっている。
Rights
This the final peer-reviewed manuscript is made available under the CC-BY-NC 4.0 license http://creativecommons.org/licenses/by-nc/4.0/
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
ETD
MEXT report number
甲第3269号
Diploma Number
甲医第1418号
Granted Date
2019-03-22
Degree Name
Doctor of Medical Science
Grantor
Tokushima University
departments
Medical Sciences
University Hospital