Medial Temporal Atrophy (Scheltens MTA)
Scheltens MTA (1992)Visual rating of medial temporal (hippocampal) atrophy, 0–4 per side, on coronal images. Age-adjusted interpretation: a grade of 2 or more is abnormal under age 75, and 3 or more is abnormal at 75 and older.
Also searched as: dementia · alzheimer · hippocampus · hippocampal atrophy · memory
Information
Incomplete input
- Please provide: left MTA grade (0–4), right MTA grade (0–4), patient age (years).
How this tool works
The Scheltens medial temporal atrophy scale (1992) rates each side on coronal T1-weighted MRI (or coronal CT) using the width of the choroid fissure, the width of the temporal horn and the height of the hippocampal formation: 0 no atrophy; 1 choroid fissure widening only; 2 added temporal horn widening with mild hippocampal height loss; 3 moderate hippocampal volume loss; 4 severe volume loss. Abnormality is age-dependent: MTA ≥ 2 is considered abnormal below 75 years and MTA ≥ 3 at 75 years or older. The scale is widely used in dementia imaging to support a diagnosis of Alzheimer disease, though medial temporal atrophy is not specific to it.
References
- Scheltens P, et al. J Neurol Sci 1992;112:127–34
- Visual rating scales in dementia imaging incl. age-adjusted MTA cutoffs (PMC)
- Radiopaedia: medial temporal lobe atrophy score
Implemented from the cited published sources. Educational use only; confirm against current guidelines before clinical use.
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