Imaging of Skeletal Tuberculosis
This is the major imaging modality for skeletal disease. Lateral tomography is useful for evaluating spinal lesions.
Computed Tomography (CT)
CT is not usually essential for non-spinal disease. In the spine, CT demonstrates not only early disease but also involvement of the posterior elements and spinal canal encroachment.
Magnetic Resonance Imaging (MR)
Magnetic resonance imaging is the best modality to demonstrate spinal disease for the extent of abscess formation and cord compression. It may be helpful in differentiating other conditions and may also show further unexpected early skeletal lesions. Gadolinium studies demonstrate rim enhancement of TB abscesses.
Ultrasound may be used to show the extent of a paraspinal mass but this is best demonstrated by CT or MR.
Isotopes can be used to show the extent and distribution of multiple lesions. Pin-hole collimators and single photon emission tomography (SPECT) increase the spatial resolution but the results are non-specific.
KeywordsVertebral Body Nucleus Pulposis Psoas Abscess Pyogenic Infection Tuberculous Spondylitis
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