Andreasen Marianne Løgtholt, Langhoff Lotte, Jensen Tue Secher, Albert Hanne B
Back Research Centre, Clinical Locomotion Science, Ringe, Denmark.
J Manipulative Physiol Ther. 2007 Jan;30(1):26-30. doi: 10.1016/j.jmpt.2006.11.009.
This study investigates whether it is possible to reproduce the lumbar lordosis in the upright position during magnetic resonance imaging (MRI) by positioning the patient supine with straightened lower extremities and investigates intra- and interexaminer reliability of measurements of the lumbar lordosis on radiographs and MRI.
This was an observational study, which included an intra- and interexaminer reliability study. The lumbar lordosis was measured digitally on radiographs taken from 22 patients in an upright standing position, and 22 MRI scans of the same patients lying supine with straightened lower extremities. These measurements were compared statistically. Intra- and interexaminer reliability was calculated applying the Bland and Altman method.
The lumbar lordosis in the standing position was reproduced in the straightened supine position with a median deviation of 3 degrees . Intra- and interexaminer reliability was better for MRI than for radiographs. The mean differences were close to 0, especially for interexaminer reliability during MRI. On radiographs, there was a higher agreement on interexaminer than on intra-examiner reliability.
The findings of this study show that lumbar lordosis in the upright position can be reproduced by positioning the patient supine with straightened lower extremities.
本研究旨在探讨在磁共振成像（MRI）过程中，通过让患者仰卧且下肢伸直的体位，是否能够重现直立位时的腰椎前凸，并研究X线片和MRI上腰椎前凸测量的检查者内和检查者间的可靠性。
这是一项观察性研究，包括检查者内和检查者间的可靠性研究。对22例患者直立位拍摄的X线片以及同一批患者下肢伸直仰卧位时的22次MRI扫描图像进行腰椎前凸的数字化测量。对这些测量结果进行统计学比较。采用Bland和Altman方法计算检查者内和检查者间的可靠性。
在伸直仰卧位时重现了站立位的腰椎前凸，中位偏差为3度。MRI的检查者内和检查者间可靠性优于X线片。平均差异接近0，尤其是MRI检查者间的可靠性。在X线片上，检查者间的一致性高于检查者内可靠性。
本研究结果表明，通过让患者仰卧且下肢伸直的体位能够重现直立位时的腰椎前凸。
