Wednesday morning grand ballroom AB papers 309–316. MRA: CNS applications

✍ Scribed by MN Brant-Zawadzki; PJ Keller

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 383 KB
• Volume: 1
• Category: Article
• ISSN: 1053-1807
• DOI: 10.1002/jmri.1880010248

✦ Synopsis

planted, spanning the laminectomy immediately after the spinal cord injury, and inductively coupled to an externally placed pickup coil. A11 imaging was conducted on a 31 -cm bore 1.9-T system, which provides a maximum gradient strength of 6 G/cm. By retrospectively dividing the normal, diffusion-insensitive images by their corresponding diffusion-sensitive images (both with the same TR and TE). the authors obtained images with diffusion-only contrast. Diffusion-sensitive images indicate abnormally high rates of transverse diffusion and low rates of longitudinal diffusion in injured white matter close to the injury site both in vivo and ex vivo. The severity of functional deficit due to spinal cord injury is associated with the degree of axonal damage. Diffusion-sensitive imaging may distinguish between areas of edema with intact myelin sheaths and areas of edema with disrupted axons.