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Fig. 1 | BMC Neurology

Fig. 1

From: Relationship between visible branch arteries distal to the stenosis on magnetic resonance angiography and stroke recurrence in patients with severe middle cerebral artery trunk stenosis: a one-year follow up study

Fig. 1

The grade of visualization of the MCA branches distal to the site of stenosis on MRA. a: grade A, the signal intensity of the MCA branches distal to the stenosis (white arrow) is normal or nearly symmetrical compared with the contralateral MCA; b: grade B, the signal intensity of the MCA branches distal to the stenosis (white arrow) is mildly reduced compared with the contralateral MCA, all M2 branches could be observed along its course, and two or more M3 branches could not be visualized to the cortical surface compared with the contralateral MCA or the number of visible M3 branches was at least 2 fewer than that of the contralateral MCA; and c: grade C, the signal intensity of the MCA branches distal to the stenosis (white arrow) is severely reduced compared with the contralateral MCA, and one or more M2 branches could not be visualized along its course compared with the contralateral MCA

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BMC Neurology

ISSN: 1471-2377

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