PMID: 9436736Jan 22, 1998Paper

Discrepancies between cerebral perfusion and metabolism after subarachnoid haemorrhage: a magnetic resonance approach

Journal of Neurology, Neurosurgery, and Psychiatry
J RoweG Radda

Abstract

There is a variable relation between angiographic vasospasm and delayed ischaemic neurological deficit (DIND). Magnetic resonance (MR) techniques have the potential to investigate the haemodynamic, metabolic, and structural changes occurring with these complications. These techniques have been applied to study DIND in patients recovering from subarachnoid haemorrhage. Fifteen studies were performed on 11 patients, 10 with DIND. Vasospasm was diagnosed angiographically or with transcranial Doppler. The MR protocol consisted of T2 weighted imaging, contrast enhanced dynamic perfusion scanning, TI weighted imaging, and two dimensional localised proton spectroscopy. Relative cerebral blood volume maps were generated from perfusion scans. Metabolite ratios were calculated from proton spectra. All patients had cortical oedema on T2 weighted images, significantly more pronounced in patients of poor clinical grade (p<0.01). Spectra were normal in good grade patients. Lactate was increased and N-acetyl aspartate decreased in the poor grades, significantly worse in grade 4 compared with grade 3 patients (p<0.05). Spectral changes also correlated with the severity of oedema (p<0.05). Relative blood volumes were significantly higher in oed...Continue Reading

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Citations

May 26, 2004·Intensive & Critical Care Nursing : the Official Journal of the British Association of Critical Care Nurses·Neal F Cook
Dec 14, 2006·Neurological Research·Elke Munch, Peter Vajkoczy
Mar 25, 2004·The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques·Navraj S HeranBrian D Toyota
Apr 27, 2010·Journal of Neuroradiology. Journal De Neuroradiologie·Virginie LefournierJean-François Payen
Jul 1, 2006·Seminars in Ultrasound, CT, and MR·P C SanelliA Biondi
May 17, 2006·Annales Françaises D'anesthèsie Et De Rèanimation·J-F PayenJ-F Le Bas
Aug 4, 2001·Stroke; a Journal of Cerebral Circulation·S Condette-AuliacL Picard
Mar 31, 1999·Current Opinion in Neurology·A E Baird, S Warach

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