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A total of 2,905 pedicle measurements were made from T1-L5. Measurements were made from spinal computerized tomography (CT) scan examinations and individual vertebral specimen roentgenograms. Parameters considered were the pedicle isthmus width in the transverse and sagittal planes, pedicle angles in the transverse and sagittal planes, and the depth to the(More)
The effective thoracic and lumbar pedicle diameter as related to screw size for that pedicle was studied in six fresh-frozen human cadaver spines. Measurements of the pedicle were obtained before screw insertion using axial and coronal reformatted computed tomographic (CT) images, as well as graduated sounding of the pedicle. After sequentially loading each(More)
MR image scanning is the most sensitive and specific imaging modality to diagnose infection of the spine. The infected disc and adjacent vertebral end plates will show increased water signal owing to the infection. The diagnosis of infection of the spine and the differentiation between infection and lesions simulating infection is described.
High-resolution thin section CT with cross-sectional oblique and panoramic CT reconstructions has been shown to be an excellent tool for the preoperative evaluation of the mandible and maxilla for dental implant surgery. Oblique cross-sections throughout the entire surgical field allow visualization of osseous topography as well as related internal anatomic(More)
Reformatted computed tomography (CT) of the spine is very useful in the evaluation of patients who have previously been treated by lumbar or cervical interbody fusions. It allows incontrovertible evidence of failure of osseous fusion as well as defines the major causes of residual or recurrent symptoms. As CT methodology becomes a routine procedure, it will(More)