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Evaluation of Patient Radiation Doses Using DAP Meter in Interventional Radiology Procedures

The author investigated interventional radiology patient doses in several other countries, assessed accu-racy of DAP meters embedded in intervention equipments in domestic country, conducted measurement of patient doses for 13 major interventional procedures with use of Dose Area Product(DAP) meters from 23 hospitals in Korea, and referred to 8,415 cases of domestic data related to interventional procedures by radiation exposure after evaluation the actual effectives of dose reduction variables through phantom test. Finally, dose reference level for major interventional procedures was suggested. In this study, guidelines for patient doses were 237.7 Gy·cm 2 in TACE, 17.3 Gy·cm 2 in AVF, 114.1 Gy·cm 2 in LE PTA & STENT, 188.5 Gy·cm 2 in TFCA, 383.5 Gy·cm 2 in Aneurysm Coil, 64.6 Gy·cm 2 in PTBD, 64.6 Gy·cm 2 in Biliary Stent, 22.4 Gy·cm 2 in PCN, 4.3 Gy·cm 2 in Hickman, 2.8 Gy·cm 2 in Chemo-port, 4.4 Gy·cm 2 in Perm-Cather, 17.1 Gy·cm 2 in PCD, and 357.9 Gy·cm 2 in Vis, EMB. Dose referenece level acquired in this study is considered to be able to use as minimal guidelines for reducing patient dose in the interventional radiology procedures. For the changes and advances of materi-als and development of equipments and procedures in the interventional radiology procedures, further studies and monitorings are needed on dose reference level Korean DAP dose conversion factor for the domestic procedures.