Department of Radiology, Seoul St. Mary's Hospital, Seoul, Korea.
Korean J Radiol. 2010 Sep-Oct;11(5):553-9. doi: 10.3348/kjr.2010.11.5.553. Epub 2010 Aug 27.
The purpose of this study was to evaluate any improvement in the quality of abdominal CTs after the utilization of the nationally based accreditation program.
Approval was obtained from the Institutional Review Board, and informed consent was waived. We retrospectively analyzed 1,011 outside abdominal CTs, from 2003 to 2007. We evaluated images using a fill-up sheet form of the national accreditation program, and subjectively by grading for the overall CT image quality. CT scans were divided into two categories according to time periods; before and after the implementation of the accreditation program. We compared CT scans between two periods according to parameters pertaining to the evaluation of images. We determined whether there was a correlation between the results of a subjective assessment of the image quality and the evaluation scores of the clinical image.
The following parameters were significantly different after the implementation of the accreditation program: identifying data, display parameters, scan length, spatial and contrast resolution, window width and level, optimal contrast enhancement, slice thickness, and total score. The remaining parameters were not significantly different between scans obtained from the two different periods: scan parameters, film quality, and artifacts.
After performing the CT accreditation program, the quality of the outside abdominal CTs show marked improvement, especially for the parameters related to the scanning protocol.
本研究旨在评估全国性认证计划实施后腹部 CT 质量的任何改善。
获得机构审查委员会的批准，并豁免了知情同意。我们回顾性分析了 2003 年至 2007 年的 1011 例外部腹部 CT。我们使用国家认证计划的填充表形式以及整体 CT 图像质量的主观分级来评估图像。根据认证计划实施前后的时间将 CT 扫描分为两类。根据与图像评估相关的参数比较两个时期的 CT 扫描。我们确定图像质量的主观评估结果与临床图像的评估评分之间是否存在相关性。
实施认证计划后，以下参数有显著差异：识别数据、显示参数、扫描长度、空间和对比分辨率、窗宽和窗位、最佳对比增强、层厚和总分。两个不同时期获得的扫描之间的其余参数没有显著差异：扫描参数、胶片质量和伪影。
实施 CT 认证计划后，外部腹部 CT 的质量有明显改善，特别是与扫描方案相关的参数。
