- Carotid Near-Occlusion: A Comprehensive Review, Part 1—Definition, Terminology, and Diagnosis
Carotid near-occlusion is distal luminal collapse of the internal carotid artery beyond a tight stenosis. Calculating percentage stenosis for carotid near-occlusion is fallacious, and near-occlusion assessment is advised before measuring for percentage stenosis. This systematic review presents what is known about carotid near-occlusion and focuses on definition, terminology, and diagnosis.
- Bone-Subtracted Spinal CT Angiography Using Nonrigid Registration for Better Visualization of Arterial Feeders in Spinal Arteriovenous Fistulas
CTA images of the arterial and late arterial phases were used to obtain warped images of the late arterial phase by nonrigid registration that was adjusted to the arterial phase images. R-CTA images were then obtained by subtracting the warped images from the arterial phase images. R-CTA had a higher accuracy compared with conventional spinal CTA (80% versus 47%). The authors conclude that subtracted CTA imaging using nonrigid registration detects feeders of spinal arteriovenous fistulas more accurately and quickly than conventional CTA.
AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates