Abstract:
:In this study, the precision and accuracy of a new method for measuring axial rotations of the lumbar vertebrae, which are thought to be increased in patients with degenerative spinal instability, were estimated. A standard image registration algorithm involving a user-selected center of rotation was adapted for this purpose. Accuracy was tested on a phantom containing a rotating lumbar vertebra. Calculated rotations were compared to the known values. Images were also obtained in subjects, using a tilting table that provided rotation between thorax and hips. For these measurements precision was estimated by varying the center of rotation. In the phantom the method had an accuracy of 0.2 degrees. In the human subject measurements the precision was 0.60-1.5 degrees. The method measured rotations of lumbar vertebrae with sufficient accuracy and precision to detect clinically significant differences in patients with back pain.
journal_name
Magn Reson Medjournal_title
Magnetic resonance in medicineauthors
Rogers BP,Haughton VM,Arfanakis K,Meyerand MEdoi
10.1002/mrm.10319subject
Has Abstractpub_date
2002-12-01 00:00:00pages
1072-5issue
6eissn
0740-3194issn
1522-2594journal_volume
48pub_type
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