| 저자(한글) |
Heilmaier, C.,Zuber, N.,Bruijns, B.,Ceyrolle, C.,Weishaupt, D. |
| 초록 |
Purpose: Radiation exposure of the public as a result of medical imaging has significantly increased during the last decades. To have a tool to register and control patient dose exposure, we implemented dose monitoring software at our institution and first connected our computed tomography (CT) scanners.Materials and Methods: CT dose data from July 2014 to February 2015 was retrospectively analyzed using dose monitoring software. We evaluated a number of scans above predefined dose thresholds ( ldquo;alerts rdquo;), assessed reasons for alerts and compared data of two CT scanners, one located close to the emergency room ( ldquo;emergency CT scanner rdquo;) and one mainly used on an outpatient basis ( ldquo;clinical routine CT scanner rdquo;). To check for statistically significant differences between scanners, chi-square-tests were performed.Results: A total of 8883 scans were acquired (clinical routine CT scanner, n #8202;= #8202;3415; emergency CT scanner, n #8202;= #8202;5468) during which 316 alerts were encountered (alert quota, 4 #8202;%). The overall alert quota ranged from 2 #8202; ndash; #8202;5 #8202;% with significantly higher values for the clinical routine CT scanner. Reasons for alerts were high BMI (51 #8202;%), patient off-centering (24 #8202;%), scan repetition (11 #8202;%), orthopedic hardware (9 #8202;%), or other (5 #8202;%). Scan repetition?was necessary significantly more often with the emergency CT scanner (p #8202;= #8202;0.019), while high BMI, off-centering and orthopedic hardware were more frequently seen with the clinical routine CT scanner (for all, p #8202; |
