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A Study on the Evaluation of Patient Dose in Interventional Radiology  

Park, Hyung-Sin (Dept. of of Diagnostic Radiology, Dongkook University hospital)
Lim, Cheong-Hwan (Dept. of Radiological Science, Hanseo University)
Kang, Byung-Sam (Dept. of Radiotechnology, Singu College)
You, In-Gyu (Dept. of Radiological Science, Hanseo University)
Jung, Hong-Ryang (Dept. of Radiological Science, Hanseo University)
Publication Information
Journal of radiological science and technology / v.35, no.4, 2012 , pp. 299-308 More about this Journal
Abstract
To perform patient dose surveys in major interventional radiography procedures as a mean of inter-institutional comparison and of establishing reference dose levels with the ultimate goal of optimizing patient doses in the field of interventional radiography. We reviewed international patient dose survey data in the literature and measured patient dose in major interventional radiography procedures (TACE, AVF, PTBD, TFCA, GDC embolization). ESD(Entrance Skin Dose) was measured using TLD chips attached to the patient skin and ED(Effective Dose) was calculated using angiography unit-derived DAP. A survey of patient dose in interventional radiography procedures were also performed with a questionnaire for interventional radiologists and we proposed a guideline for optimizing patient doses in the field of interventional radiology. The patient dose survey data in interventional radiography procedures were very rare in literature compared with those in diagnostic radiography procedures. In TACE, the mean ED was 25.43 mSv and the mean ESD was 511.75 mGy. The mean ED of TACE was not high, but the cumulative dose should be checked, due to longer procedure TACE. In TFCA, the mean ED was 22.6 mSv and it was relatively high compared with data of other countries. In GDC embolization, the mean ED was not available, because GDC embolization was performed with old Image-Intensifier-type unit and there has no unit-installed ionization chamber. Also, the mean ESD of GDC embolization was up to 2,264 mGy and further studies are needed to calculate the net ED of GDC embolization. Patient dose occurred during interventional radiography procedures are high related with the difficulty of the procedure, fluoroscopy time, the number of angiographies and the treatment protocol. Therefore, continuous education and efforts should be made to optimize the patient dose in the field of interventional radiology.
Keywords
patient dose; interventional radiography procedures; DAP; ESD; ED; TLD;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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