| 王红坡,葛英辉.MR测量髌韧带和前交叉韧带的技术优化探讨[J].中国医学影像技术,2009,25(8):1464~1466 |
| MR测量髌韧带和前交叉韧带的技术优化探讨 |
| Technical transformation for MRI in measuring patellar ligament and anterior cruciate ligament |
| 投稿时间：2009-03-05 修订日期：2009-04-25 |
| DOI： |
| 中文关键词: 磁共振成像 髌韧带 前交叉韧带 技术优化 |
| 英文关键词:Magnetic resonance imaging Patellar tendon Anterior cruciate ligament Technical transformation |
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| 中文摘要: |
| 目的 探讨MR获取活体髌韧带(PL)和前交叉韧带(ACL)几何数据的技术优化,为指导前交叉韧带移植建立基础。方法 采用1.5T超导型MR扫描仪,专用膝关节线圈,快速自旋回波(FSE),经与股骨内、外侧髁后缘切线的垂直线呈10°~15°方向的斜矢状面定位线获得ACL高分辨T1WI;以髌骨下缘中心和胫骨结节中心的连线为中心定位线获取PL高分辨T1像。用Radworks 5.1工作站测量PL和ACL长度,另取3位医生分别测取的左侧PL长度行数据可信度分析。结果 本组扫描方法简单、准确、快速,能分别100%获取ACL和PL全长图像,图像质量完全满足临床测量需要。矢状位像采集时间为2 min 25 s。PL和ACL平均长度分别为:男:(42.20±4.21)cm和(36.98±4.12)cm,女:(40.15±4.00)cm和(35.80±4.67)cm;组内相关系数(ICC)大于0.997。结论 优化MR扫描技术可用于测量活体的PL和ACL长度,具有很高的稳定性和可重复性,能为膝关节ACL重建手术提供准确数据。 |
| 英文摘要: |
| Objective To investigate the technical transformation for MR to get the geometry of the intravital patellar ligament (PL) and anterior cruciate ligament (ACL), so as to offer information for the ACL reconstruction surgery with patellar tendon graft. Methods MR scan was performed under 1.5T superconducting with special surface coil and fast spin echo (FSE). High resolution T1 weighted image (H-T1WI) of ACL was obtained on the sagittal plane with 10°－15° in the inner side of vertical line which was the axial line of the tangent line through the femoral intercondylar fossa. H-T1WI of PL was sagittal image from the center of the lower margin of patella and the center of tibial node. The length of PL and ACL were measured on Radworks 5.1; the data of the left side of PL was measured separately by 3 doctors and was analyzed. Results The whole length of ACL and PL 100% could be obtained with this method. The quality of the images could satisfy the requirements of the measurements. The time used in collecting the sagittal image was 2.25 min. The average length of PL and ACL for male was (42.20±4.21)cm and (36.98±4.12)cm, for female was (40.15±4.00)cm and (35.80±4.67)cm. ICC within the three group data of PL length gotten by 3 difference specialist was 0.997-1.000. Conclusion The technical transformation for MR can be used to measure the geometry data of PL and ACL in vivo, and the data can offer accurate information for ACL reconstructing operation with good stability and repeatability. |
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