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Grade 1 stenosis of the left internal carotid artery.
A, Oblique DSA image shows minimal stenosis of the left internal carotid artery.
B, Elliptic centric contrast-enhanced MR angiogram, in the same projection as that of the DSA image, depicts a good correlation with DSA.
C, Spiral CT angiogram shows that the calcium distribution (type 1) does not preclude a good evaluation of the vessel.
