CAJ | 학술논문

目的正确评估复发性肩关节前脱位患者肩盂骨缺损的影像学研究,应用64层螺旋CT扫描三维重建规范化肩盂标准正面观影像.方法对35例(70侧)成人志愿者的肩盂进行64层螺旋CT扫描,之后在三维工作站上通过重建肩盂的三维图像(去除肱骨头影像),在三个多平面重建和一个三维容积再现重建图像上,通过调整不同平面上的彩色参考线,按标准化确定肩盂标准正面观.为验证该方法的可重复性,三位放射科医师根据上述方法在三维工作站上分别取得肩盂的标准三维正面观影像及标尺,并以二维图像的格式导出,利用AutoCAD软件进行分析.结果通过测量三位医师在三维工作站上所制作的肩盂正面观的图像,肩盂下部前缘最突点、后缘最突点之间的距离为[(28.1±3.3)mm,下同],肩盂上缘最突点、下缘最突点之间的距离为(38.7±3.7)mm.三位医师所取得正面观影像的测量值之间的差异无统计学意义(P>0.05).结论根据我们提出的方法,在三维工作站上取得肩盂标准正面观影像是简便、可行的,其可重复性较高,对临床工作中规范化肩盂标准正面观以精确评估肩盂骨缺损具有重要意义.
목적 정학평고복발성견관절전탈위환자견우골결손적영상학연구,응용64층라선CT소묘삼유중건규범화견우표준정면관영상.방법 대35례(70측)성인지원자적견우진행64층라선CT소묘,지후재삼유공작참상통과중건견우적삼유도상(거제굉골두영상),재삼개다평면중건화일개삼유용적재현중건도상상,통과조정불동평면상적채색삼고선,안표준화학정견우표준정면관.위험증해방법적가중복성,삼위방사과의사근거상술방법재삼유공작참상분별취득견우적표준삼유정면관영상급표척,병이이유도상적격식도출,이용AutoCAD연건진행분석.결과 통과측량삼위의사재삼유공작참상소제작적견우정면관적도상,견우하부전연최돌점、후연최돌점지간적거리위[(28.1±3.3)mm,하동],견우상연최돌점、하연최돌점지간적거리위(38.7±3.7)mm.삼위의사소취득정면관영상적측량치지간적차이무통계학의의(P>0.05).결론 근거아문제출적방법,재삼유공작참상취득견우표준정면관영상시간편、가행적,기가중복성교고,대림상공작중규범화견우표준정면관이정학평고견우골결손구유중요의의.
Objective To establish the standardized anterior view of the glenoid cavity of the shoulder using 3D reconstruction of 64-slice spiral CT scans, and provide radiological features for correct evaluation of glenoid cavity defect in patients with recurrent anterior shoulder dislocation. Methods The glenoid cavity of 70 adult shoulders from 35 healthy volunteers were scanned using 64-slice spiral CT. 3D images of the glenoid cavity (humeral head removed image) were reconstructed on the 3D workstation. On three multiplane reconstruction images and one 3D volume reconstruction image, the color reference lines were adjusted to render a standardized anterior view image of the glenoid cavity. To verify reproducibility of the technique, three radiologists were asked to use the above-mentioned technique to acquire standardized 3D anterior view and coordinates of the glenoid cavity from the workstation and output the data in 2D format. AutoCAD software was applied for analysis. Results Measurements taken from the anterior view images of the glenoid cavity acquired by the three radiologists from the 3D workstation were: the distance between the most anterior protrusion and most posterior protrusion of the glenoid cavity was (28.1 ± 3.3) mm, and the distance between the upper protrusion and lower protrusion was (38.7 ± 3.7) mm. There were no significant differences among the data obtained by the three radiologists (P > 0.05). Conclusion Our method of acquiring standardized anterior view of the glenoid cavity from the 3D workstation is easy, practical and reproducible. Standardizing anterior views of the glenoid cavity is clinically significant in that it facilitates the precise assessment of bone defect of the glenoid cavity.