Laurie Barclay, MD NEW YORK (MedscapeWire) May 06
Two studies presented April 29 and April 30 at the American Roentgen Ray Society’s annual meeting in Atlanta, Georgia, highlight new frontiers in imaging brain disorders: computed tomography (CT) angiography for vascular disease and tensor diffusion magnetic resonance imaging (MRI) for multiple sclerosis (MS). “We are now using CT angiography with three-dimensional and maximum intensity projection in all cases of suspected vascular lesion of the brain,” lead author Ashok Nath, MD, from Khoula Hospital in Oman, says in a news release. “The neurosurgeons have so much faith in the technique, they are using the images to plan surgery of patients with intracranial aneurysms and arteriovenous malformations (AVMs).” In 50 patients with intracranial hemorrhage on plain CT, CT angiography scan with 3-dimensional and maximum intensity projection accurately diagnosed 30 intracranial aneurysms and 9 AVMs, including some aneurysms as small as 2 mm. The entire procedure takes only a few minutes and uses less radiation than digital subtraction angiography (DSA).
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