Comparison of effective dose for imaging of mandible between multi-detector CT and cone-beam CT

Jeong, Dae-Kyo; Lee, Sang-Chul; Huh, Kyung-Hoe; Yi, Won-Jin; Heo, Min-Suk; Lee, Sam-Sun; Choi, Soon-Chul

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자료유형: 학술저널

저자정보: Jeong, Dae-Kyo (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Lee, Sang-Chul (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Huh, Kyung-Hoe (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Yi, Won-Jin (Department of Oral and Maxillofacial Radiology, Dental Research Institute, and BK21 Craniomaxillofacial Life Science, School of Dentistry, Seoul National University) Heo, Min-Suk (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University) Lee, Sam-Sun (Department of Oral and Maxillofacial Radiology, Dental Research Institute, and BK21 Craniomaxillofacial Life Science, School of Dentistry, Seoul National University) Choi, Soon-Chul (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University)

저널정보: 대한영상치의학회 Imaging science in dentistry Imaging science in dentistry 제42권 제2호

발행연도: 2012.1

수록면: 65 - 70 (6page)

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Purpose : The aim of this study was to compare the effective dose for imaging of mandible between multi-detector computed tomography (MDCT) and cone-beam computed tomography (CBCT). An MDCT with low dose technique was also compared with them. Materials and Methods : Thermoluminescent dosimeter (TLD) chips were placed at 25 organ sites of an anthropomorphic phantom. The mandible of the phantom was exposed using 2 different types of MDCT units (Somatom Sensation 10 for standard-dose MDCT, Somatom Emotion 6 for low-dose MDCT) and 3 different CBCT units (AZ3000CT, Implagraphy, and Kavo 3D eXaM). The radiation absorbed dose was measured and the effective dose was calculated according to the ICRP 2007 report. Results : The effective dose was the highest for Somatom Sensation 10 (425.84 ${\mu}Sv$), followed by AZ3000CT (332.4 ${\mu}Sv$), Somatom Emotion 6 (199.38 ${\mu}Sv$), and 3D eXaM (111.6 ${\mu}Sv$); it was the lowest for Implagraphy (83.09 ${\mu}Sv$). The CBCT showed significant variation in dose level with different device. Conclusion : The effective doses of MDCTs were not significantly different from those of CBCTs for imaging of mandible. The effective dose of MDCT could be markedly decreased by using the low-dose technique.

#Multidetector Computed Tomography #Cone-Beam Computed Tomography #Thermoluminescent Dosimetry #Mandible

참고문헌 (24)

참고문헌 신청

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