直肠肿瘤角度测量中MRI观察者间的可靠性
MRI interobserver reliability in rectal tumor angulation.
作者信息
Pedersen Malene Rv, Otto Peter O, Precht Helle, Rafaelsen Søren R
机构信息
Department of Radiology, Vejle Hospital, University Hospital of Southern Denmark, Vejle, Denmark.
Department of Regional Health, University of Southern Denmark, Odense, Denmark.
出版信息
Acta Radiol Open. 2022 Feb 23;11(2):20584601221081292. doi: 10.1177/20584601221081292. eCollection 2022 Feb.
BACKGROUND
When rectal tumors are examined using magnetic resonance imaging (MRI) the perpendicular angulation of the axial T2-weighted image to the tumor axis is essential for a correct measure of the shortest distance between tumor and mesorectal facia.
PURPOSE
The purpose of this study was to determine the interobserver variability in rectal tumor angulation between a radiologist and a radiographer.
MATERIAL AND METHODS
Two observers performed the angulation independently. All MRI examinations were performed using an MRI 1.5 Tesla unit. A Bland-Altman plot was used to assess the interobserver variance and Intraclass correlation coefficient (ICC) statistic was used to assess the interobserver reliability.
RESULTS
MRI was performed in 55 patients with rectal cancer during a one-year period (25 (45.5%) women and 30 (54.5%) men). The median age was 71 years (range 46-87 years). The rectal tumor mean length was 3.9 cm. The interobserver reliability was good (ICC = 0.83, 95% confidence interval 0.72-0.90).
CONCLUSION
Radiographers receiving training will be able to perform MRI rectal tumor angulation.
背景
使用磁共振成像（MRI）检查直肠肿瘤时，轴向T2加权图像与肿瘤轴的垂直角度对于正确测量肿瘤与直肠系膜筋膜之间的最短距离至关重要。
目的
本研究的目的是确定放射科医生和放射技师之间在直肠肿瘤角度测量上的观察者间变异性。
材料与方法
两名观察者独立进行角度测量。所有MRI检查均使用1.5特斯拉的MRI设备进行。采用Bland-Altman图评估观察者间差异，使用组内相关系数（ICC）统计量评估观察者间可靠性。
结果
在一年期间对55例直肠癌患者进行了MRI检查（25例（45.5%）女性和30例（54.5%）男性）。中位年龄为71岁（范围46 - 87岁）。直肠肿瘤平均长度为3.9厘米。观察者间可靠性良好（ICC = 0.83，95%置信区间0.72 - 0.90）。
结论
接受培训的放射技师将能够进行直肠肿瘤的MRI角度测量。
Zotero 插件