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Abstract We studied 23 patients with meningiomas and 14 with schwannomas using dynamic spin-echo (TR/TE 200/15 ms) MRI. Histologically the meningiomas were classified according to the 1993 WHO classification. Serial images were obtained every 30 s for 210 s after rapid injection of gadopentetate dimeglumine (0.1 mmol/kg). The contrast-enhancement ratio (CER) was divided into three patterns; a sharp...
Abstract We report the intravascular ultrasonographic appearances of three supra-aortic atherosclerotic lesions in two patients before and after percutaneous transluminal angioplasty. Atherosclerotic plaques with calcification and dissection of the arterial wall after percutaneous transluminal angioplasty were demonstrated to better advantage, although they were difficult to see on conventional angiograms.
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