PMID: 8952350Jul 1, 1996Paper

Cerebral metabolic disturbance in hypoxic encephalopathy: evaluation with H-1 MR spectroscopy

Rinshō shinkeigaku = Clinical neurology
S SuzukiM Hitosugi

Abstract

To analyze metabolic changes in the brain during hypoxic encephalopathy. MR imaging (MRI) and H-1 MR spectroscopy (H-1 MRS) were performed on three patients with hypoxic encephalopathy, who had need temporary mechanical ventilation, and five healthy age-matched volunteers. Spectra were obtained from bilateral fronto-parietal gray matter and basal ganglia voxels. N-acetyl aspartate (NAA), creatine (Cr) and choline (Cho) were analyzed. (1) MRI; T1 weighted MRI revealed high signal intensity areas in the diffuse cerebral cortex and basal ganglia in two patients. The former was thought to reflect cortical laminar necrosis. T2-weighed MRI showed high signal intensity in diffuse white mate. (2) H-1 MRS; significant reduction of the NAA/ Cr ratio and elevation of the Cho/Cr ratio were detected. H-1 MRS is able to quantify metabolic alterations in the hypoxic encephalopathy.

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