AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Oct 1995
Imaging of carotid artery stenosis: clinical efficacy and cost-effectiveness.
To determine the most accurate, safe, and cost-effective imaging protocol for selecting patients for carotid endarterectomy. ⋯ Ultrasound followed by confirmatory angiography is a cost-effective way to image patients suspected of carotid artery stenosis. MR angiography may become cost effective and lead to a better final patient outcome only when it can reliably replace invasive angiography as the preoperative examination.
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AJNR Am J Neuroradiol · Oct 1995
Improved detection of enhancing and nonenhancing lesions of multiple sclerosis with magnetization transfer.
To determine whether magnetization transfer imaging can improve visibility of contrast enhancement of multiple sclerosis plaques. ⋯ Magnetization transfer improves the visibility of enhancing multiple sclerosis lesions, because they have a higher contrast-to-noise ratio than conventional postcontrast T1-weighted images. High signal intensity on both nonenhancing and enhancing lesions noted only on precontrast T1-weighted magnetization transfer suggests a lipid signal was unmasked. If magnetization transfer is used in multiple sclerosis patients, a precontrast magnetization transfer image is necessary.