In spondylotic myelopathy, conventional myelography can be used to diagnose severe canal stenosis [74]. MRI, however, is best for evaluation of the marrow and the spinal canal/spinal cord [13-15]. CT Spine CT can depict bony encroachment on the spinal canal in cases of disc-osteophyte complexes as well as subluxation and compression of neural structures by herniated disc material with better resolution than with radiographs. Although CT demonstrates osseous integrity with excellent assessment of bone destruction, MRI provides better visualization of the marrow and the spinal cord [13-15]. It is therefore not useful in the initial evaluation of noncompressive etiologies of chronic or progressive myelopathy. CTA Spine There is no relevant literature regarding the use of CTA in the initial imaging evaluation of chronic or progressive myelopathy. CTA continues to make progress as a preangiographic tool for localization of spinal vascular malformations [99-102]. Radiography Spine There is no relevant literature supporting the use of radiographs as the initial imaging evaluation of chronic or progressive myelopathy. Although radiographs may demonstrate bone destruction, CT provides better visualization of the osseous spine [13-15]. In spondylotic myelopathy, radiographs may depict osteophytic narrowing of the spinal canal, whereas conventional myelography can be used to diagnose severe canal stenosis [74]. MRI, however, Myelopathy is best for evaluation of the marrow and the spinal canal/spinal cord [13-15]. Lateral radiographs can be obtained as an adjunct to cross-sectional imaging to help assess alignment parameters and dynamic instability [77]. Arteriography There is no relevant literature regarding the use of conventional arteriography in the initial imaging evaluation of chronic or progressive myelopathy. Supporting Documents The evidence table, literature search, and appendix for this topic are available at https://acsearch. acr.org/list.
Myelopathy PCAs. In spondylotic myelopathy, conventional myelography can be used to diagnose severe canal stenosis [74]. MRI, however, is best for evaluation of the marrow and the spinal canal/spinal cord [13-15]. CT Spine CT can depict bony encroachment on the spinal canal in cases of disc-osteophyte complexes as well as subluxation and compression of neural structures by herniated disc material with better resolution than with radiographs. Although CT demonstrates osseous integrity with excellent assessment of bone destruction, MRI provides better visualization of the marrow and the spinal cord [13-15]. It is therefore not useful in the initial evaluation of noncompressive etiologies of chronic or progressive myelopathy. CTA Spine There is no relevant literature regarding the use of CTA in the initial imaging evaluation of chronic or progressive myelopathy. CTA continues to make progress as a preangiographic tool for localization of spinal vascular malformations [99-102]. Radiography Spine There is no relevant literature supporting the use of radiographs as the initial imaging evaluation of chronic or progressive myelopathy. Although radiographs may demonstrate bone destruction, CT provides better visualization of the osseous spine [13-15]. In spondylotic myelopathy, radiographs may depict osteophytic narrowing of the spinal canal, whereas conventional myelography can be used to diagnose severe canal stenosis [74]. MRI, however, Myelopathy is best for evaluation of the marrow and the spinal canal/spinal cord [13-15]. Lateral radiographs can be obtained as an adjunct to cross-sectional imaging to help assess alignment parameters and dynamic instability [77]. Arteriography There is no relevant literature regarding the use of conventional arteriography in the initial imaging evaluation of chronic or progressive myelopathy. Supporting Documents The evidence table, literature search, and appendix for this topic are available at https://acsearch. acr.org/list.