169 9

Radiation Doses of Various CT Protocols: A Multicenter Longitudinal Observation Study

Title
Radiation Doses of Various CT Protocols: A Multicenter Longitudinal Observation Study
Author
김용수
Keywords
Multidetector Computed Tomography; Radiation Dose; Radiology; Longitudinal Studies
Issue Date
2016-02
Publisher
KOREAN ACAD MEDICAL SCIENCES
Citation
JOURNAL OF KOREAN MEDICAL SCIENCE, v. 31, Page. 24-31
Abstract
Emerging concerns regarding the hazard from medical radiation including CT examinations has been suggested. The purpose of this study was to observe the longitudinal changes of CT radiation doses of various CT protocols and to estimate the long-term efforts of supervising radiologists to reduce medical radiation. Radiation dose data from 11 representative CT protocols were collected from 12 hospitals. Attending radiologists had collected CT radiation dose data in two time points, 2007 and 2010. They collected the volume CT dose index (CTDIvol) of each phase, number of phases, dose length product (DLP) of each phase, and types of scanned CT machines. From the collected data, total DLP and effective dose (ED) were calculated. CTDIvol, total DLP, and ED of 2007 and 2010 were compared according to CT protocols, CT machine type, and hospital. During the three years, CTDI(vo)l had significantly decreased, except for dynamic CT of the liver. Total DLP and ED were significantly decreased in all 11 protocols. The decrement was more evident in newer CT scanners. However, there was substantial variability of changes of ED during the three years according to hospitals. Although there was variability according to protocols, machines, and hospital, CT radiation doses were decreased during the 3 years. This study showed the effects of decreased CT radiation dose by efforts of radiologists and medical society.
URI
https://synapse.koreamed.org/DOIx.php?id=10.3346/jkms.2016.31.S1.S24http://hdl.handle.net/20.500.11754/31760
ISSN
1011-8934; 1598-6357
DOI
10.3346/jkms.2016.31.S1.S24
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
Files in This Item:
Radiation Doses of Various CT Protocols A Multicenter Longitudinal Observation Study.pdfDownload
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE