Yon Kwon Ihn1, Bum-Soo Kim2, Jun Soo Byun3, Sang Hyun Suh4, Yoo Dong Won5, Deok Hee Lee6, Byung Moon Kim7, Young Soo Kim8, Pyong Jeon9, Chang-Woo Ryu10, Sang-Il Suh11, Dae Seob Choi12, See Sung Choi13, Jin Wook Choi14, Hyuk Won Chang15, Jae-Wook Lee16, Sang Heum Kim17, Young Jun Lee18, Shang Hun Shin19, Soo Mee Lim20, Woong Yoon21, Hae Woong Jeong22, Moon Hee Han23. 1. Department of Radiology, St.Vincent's Hospital, College of Medicine, The Catholic University of Korea, Gyeonggi-do, Korea. 2. Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. 3. Department of Radiology, Chung-Ang University Hospital, Seoul, Korea. 4. Department of Radiology, Gangnam Severance Hospital, Yonsei University, Seoul, Korea. 5. Department of Radiology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Gyeonggi-do, Korea. 6. Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea. 7. Department of Radiology, Severance Hospital Stroke Center, Yonsei Unviersity College of Medicine, Seoul, Korea. 8. Department of Neurosurgery, Pusan National University Yangsan Hospital, Pusan National University, Yangsan, Korea. 9. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. 10. Department of Radiology, Kyung Hee University Hospital at Gangdong, Seoul, Korea. 11. Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea. 12. Department of Radiology, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea. 13. Department of Radiology, Wonkwang University Hospital, Iksan, Korea. 14. Department of Radiology, Ajou University School of Medicine, Gyeonggi-do, Korea. 15. Department of Radiology, Keimyung University College of Medicine, Dongsan Medical Center, Daegu, Korea. 16. Department of Radiology, National Health Insurance Service Ilsan Hospital, Gyeonggi-do, Korea. 17. Department of Radiology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Korea. 18. Department of Radiology, Hanyang University College of Medicine, Seoul, Korea. 19. Department of Radiology, Ulsan University Hospital, University of Ulsan, College of Medicine, Ulsan, Korea. 20. Department of Radiology, Ewha Womans University Mokdong Hospital, Seoul, Korea. 21. Department of Radiology, Chonnam National University Hospital, Gwangju, Korea. 22. Department of Radiology, Busan Paik Hospital, Inje University, Busan, Korea. 23. Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
Abstract
PURPOSE: To assess patient radiation doses during cerebral angiography and embolization of intracranial aneurysms across multi-centers and propose a diagnostic reference level (DRL). MATERIALS AND METHODS: We studied a sample of 490 diagnostic and 371 therapeutic procedures for intracranial aneurysms, which were performed at 23 hospitals in Korea in 2015. Parameters including dose-area product (DAP), cumulative air kerma (CAK), fluoroscopic time and total angiographic image frames were obtained and analyzed. RESULTS: Total mean DAP, CAK, fluoroscopy time, and total angiographic image frames were 106.2 ± 66.4 Gy-cm(2), 697.1 ± 473.7 mGy, 9.7 ± 6.5 minutes, 241.5 ± 116.6 frames for diagnostic procedures, 218.8 ± 164.3 Gy-cm(2), 3365.7 ± 2205.8 mGy, 51.5 ± 31.1 minutes, 443.5 ± 270.7 frames for therapeutic procedures, respectively. For diagnostic procedure, the third quartiles for DRLs were 144.2 Gy-cm(2) for DAP, 921.1 mGy for CAK, 12.2 minutes for fluoroscopy times and 286.5 for number of image frames, respectively. For therapeutic procedures, the third quartiles for DRLs were 271.0 Gy-cm(2) for DAP, 4471.3 mGy for CAK, 64.7 minutes for fluoroscopy times and 567.3 for number of image frames, respectively. On average, rotational angiography was used 1.5 ± 0.7 times/session (range, 0-4; n=490) for diagnostic procedures and 1.6 ± 1.2 times/session (range, 0-4; n=368) for therapeutic procedures, respectively. CONCLUSION: Radiation dose as measured by DAP, fluoroscopy time and image frames were lower in our patients compared to another study regarding cerebral angiography, and DAP was lower with fewer angiographic image frames for therapeutic procedures. Proposed DRLs can be used for quality assurance and patient safety in diagnostic and therapeutic procedures.
PURPOSE: To assess patient radiation doses during cerebral angiography and embolization of intracranial aneurysms across multi-centers and propose a diagnostic reference level (DRL). MATERIALS AND METHODS: We studied a sample of 490 diagnostic and 371 therapeutic procedures for intracranial aneurysms, which were performed at 23 hospitals in Korea in 2015. Parameters including dose-area product (DAP), cumulative air kerma (CAK), fluoroscopic time and total angiographic image frames were obtained and analyzed. RESULTS: Total mean DAP, CAK, fluoroscopy time, and total angiographic image frames were 106.2 ± 66.4 Gy-cm(2), 697.1 ± 473.7 mGy, 9.7 ± 6.5 minutes, 241.5 ± 116.6 frames for diagnostic procedures, 218.8 ± 164.3 Gy-cm(2), 3365.7 ± 2205.8 mGy, 51.5 ± 31.1 minutes, 443.5 ± 270.7 frames for therapeutic procedures, respectively. For diagnostic procedure, the third quartiles for DRLs were 144.2 Gy-cm(2) for DAP, 921.1 mGy for CAK, 12.2 minutes for fluoroscopy times and 286.5 for number of image frames, respectively. For therapeutic procedures, the third quartiles for DRLs were 271.0 Gy-cm(2) for DAP, 4471.3 mGy for CAK, 64.7 minutes for fluoroscopy times and 567.3 for number of image frames, respectively. On average, rotational angiography was used 1.5 ± 0.7 times/session (range, 0-4; n=490) for diagnostic procedures and 1.6 ± 1.2 times/session (range, 0-4; n=368) for therapeutic procedures, respectively. CONCLUSION: Radiation dose as measured by DAP, fluoroscopy time and image frames were lower in our patients compared to another study regarding cerebral angiography, and DAP was lower with fewer angiographic image frames for therapeutic procedures. Proposed DRLs can be used for quality assurance and patient safety in diagnostic and therapeutic procedures.
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