Format

Send to

Choose Destination
Arch Gerontol Geriatr. 2002 Sep-Oct;35(2):137-42.

Clinical brain proton magnetic resonance spectroscopy for management of Alzheimer's and sub-cortical ischemic vascular dementia in older people.

Author information

1
Department of Radiology, Hammersmith Hospitals NHS Trust, Fulham Palace Road, London, UK.

Abstract

This study examined the clinical usefulness of magnetic resonance spectroscopy (MRS) performed using an automated single voxel technique at 1.0 T field strength in a district general hospital magnetic resonance (MR) scanner in the assessment of older people referred to a memory clinic with suspected dementia. Of 50 elderly subjects (M:F 20:30) examined and followed-up clinically over more than 2 years, 20 had clinical Alzheimer's disease (AD), 18 had clinical vascular dementia, six had mixed features and three were normal. Three normal volunteers were also studied. MRS was performed at the same time as structural magnetic resonance imaging (MRI), added <15 min to the examination and was well-tolerated in all patients studied. Patients with AD had significantly higher myoinositol/creatine (MI/Cr) ratios (mean +/- S.D.: 0.82 +/- 0.04) compared to those with vascular dementia (mean +/-S. D.: 0.71 +/- 0.07, P<0.00001) and normal subjects (mean +/- S.D.: 0.72 +/- 0.036, P<0.0002); there was little overlap between the AD and vascular groups. The mixed dementia group also had significantly higher MI/Cr ratios (mean +/- S.D.: 0.80 +/- 0.05) than vascular dementia (P<0.01) and normal (P<0.03) groups, but with considerable overlap. No significant differences were shown for N-acetyl aspartate or choline/creatine ratios between the different clinical groups. These data suggest that MI/Cr ratios can distinguish patients with AD from normal subjects and those with sub-cortical ischemic vascular dementia and that MRS will be useful to clinicians managing persons with AD in a district general hospital setting.

PMID:
14764351

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center