Richman J A, Gelberman R H, Rydevik B L, Gylys-Morin V M, Hajek P C, Sartoris D J
Division of Orthopaedics and Rehabilitation, University of California, San Diego Medical Center.
J Hand Surg Am. 1987 Sep;12(5 Pt 1):712-7. doi: 10.1016/s0363-5023(87)80054-0.
Three-dimensional computer reconstruction of magnetic resonance images (MRI) of ten cadaveric specimens was used to determine carpal tunnel volume and carpal arch width. Magnetic resonance images-acquired data were compared with direct measurement of cadaveric carpal canal volume by means of a silicone-injection technique. Mean MRI three-dimensional reconstruction volume was 5.84 ml +/- 1.24 ml. Mean silicone-mold volume was 4.73 +/- 1.01 ml. A correction factor of 0.8161 was used to accurately calculate carpal tunnel volume from MRI-acquired data. There was no significant difference between calculated carpal tunnel volumes and silicone-mold volumes (p = 0.623), and there was a linear relationship between MRI-acquired volumes and silicone-mold volumes (correlation coefficient r = 0.97). Differences in MRI-volume determinations between observers were not significant (0.25 greater than or equal to p greater than 0.1). MRI three-dimensional reconstruction, a valid and reproducible technique for measuring carpal tunnel volume and dimensions, has considerable research potential for the evaluation of the relationship between the carpal canal and its contents before and after carpal tunnel release.
采用对10个尸体标本的磁共振成像（MRI）进行三维计算机重建的方法来确定腕管容积和腕弓宽度。将磁共振成像获取的数据与通过硅树脂注射技术对尸体腕管容积的直接测量结果进行比较。MRI三维重建的平均容积为5.84 ml±1.24 ml。硅树脂铸型的平均容积为4.73±1.01 ml。使用0.8161的校正因子从MRI获取的数据中准确计算腕管容积。计算得到的腕管容积与硅树脂铸型容积之间无显著差异（p = 0.623），且MRI获取的容积与硅树脂铸型容积之间存在线性关系（相关系数r = 0.97）。观察者之间MRI容积测定的差异不显著（0.25≥p＞0.1）。MRI三维重建是一种用于测量腕管容积和尺寸的有效且可重复的技术，在评估腕管松解前后腕管与其内容物之间的关系方面具有相当大的研究潜力。
