Erschienen in:
01.02.2004 | Diagnostic Neuroradiology
MR perfusion imaging in proliferative angiopathy
verfasst von:
D. Ducreux, J. F. Meder, D. Fredy, J. Bittoun, P. Lasjaunias
Erschienen in:
Neuroradiology
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Ausgabe 2/2004
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Abstract
Seizures, which may be the main expression of cerebral arteriovenous malformations (CAVM) can be difficult to control medically. Our goal was to use perfusion-weighted imaging (PWI) in correlation with clinical data to detect abnormal areas of the cerebrum related to a particular type of CAVM (proliferative angiopathy) and to study the pathophysiology. We use PWI, with a bolus injection of contrast medium, to investigate seven patients with proliferative angiopathy and fits producing language disturbance. Perfusion parameters were calculated using the first-pass moment theory. Five patients had perimalformative and/or contralateral abnormal areas with relative hyperperfusion (cerebral blood volume +20.7±16.2%, blood flow 92.5±68.8 ml/min/100 g). Areas of hypoperfusion and venous congestion were detected in two patients. One patient who underwent MRI after a severe focal deficit had no significant haemodynamic abnormality.