Measurement of vertebral foraminal dimensions using three-dimensional computerized tomography.
basic_science · Level V
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Abstract
The dimensions of lumbar intervertebral foramina were measured in cadaveric spines using three-dimensional computerized tomography. Six different image reconstruction protocols were used. The results were compared with measurements of the same foramina using calipers after dissection. All the three-dimensional computerized tomographic measurements underestimated the true foraminal dimensions. The best agreement, as well as the best images, were obtained using 4/3 slices and a reconstruction threshold of 300 Hounsfield Units. This method is not recommended for measurement of foraminal dimensions. However, there may be a use in assessment and planning surgical management.
Medical subject headings
- Image Processing, Computer-Assisted
- Lumbar Vertebrae
Anatomy
- lumbar spine