Cited 0 times in

Dosimetry of dental cone beam CT and multi-slice CT in oral and maxillofacial radiology using conversion factors

Title
Dosimetry of dental cone beam CT and multi-slice CT in oral and maxillofacial radiology using conversion factors
Other Titles
구강 악안면 영역에서 변환 인자를 이용한 치과용 콘빔 CT와 다중절편 CT의 선량 측정
Issue Date
2013
Publisher
Graduate School, Yonsei University
Description
Dept. of Dentistry/박사
Abstract
Objective: To compare the effective doses between dental cone beam computed tomography (CBCT) and multi-slice computed tomography (MSCT) for the oral and maxillofacial region.Materials and Methods: VacuDAP® ionization chamber was located in front of the X-ray sources in CBCT units for measuring dose area product (DAP). Measurements are performed in three CBCT units. Dose-length product (DLP) values are acquired from two MSCT units. Effective doses were calculated by conversion factors.Results: Effective doses of three CBCTs with the similar field of views (FOVs) were 161.9 μ㏜, 213.6 μ㏜, and 358.4 μ㏜, respectively. Effective doses of MSCTs were 1147.2 μ㏜ and 1629.6 μ㏜. The effective doses of MSCTs are 3.2~10 times more than those of CBCTs.Conclusions: The effective doses of CBCTs were lower than those of MSCTs, but showed wide ranges depending on units and modes. DAP can be used as an easier and faster way to estimate the patient exposure dose in CBCTs, and can be acceptable to manage it.
URI

http://ir.ymlib.yonsei.ac.kr/handle/22282913/134645
Appears in Collections:
2. 학위논문 > 2. College of Dentistry (치과대학) > 박사
Yonsei Authors
사서에게 알리기
  feedback
Files in This Item:
Fulltext
 
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse