Table 5.

Correct classification using the proposed MRI criteria to differentiate PSP and MSA patients

TeslaPSP*MSA-PMSA-C
* Presence of any of the following: midbrain diameter < 17 mm, signal increase of midbrain, dilatation of the third ventricle, frontal or temporal lobe atrophy, signal increase of globus pallidus on 0.5-T scan, or atrophy of the red nucleus.
† Presence of any of the following: hyperintense putaminal rim or putaminal hyperintensity; signal increase in the cerebellum, middle cerebellar peduncles, or pons (hot cross bun); atrophy of the dentate nucleus; or dilatation of the fourth ventricle.
‡ Presence of any of the following: signal increase or atrophy in the cerebellum, middle cerebellar peduncles, pons (hot-cross bun), or inferior olives; atrophy of the medulla or dentate nucleus; or dilatation of the fourth ventricle.
PSP = progressive supranuclear palsy; MSA-P = multiple system atrophy with parkinsonian features; MSA-C = MSA with cerebellar features.
Percentage of patients who were classified correctly
0.5784480
1.5675789
Percentage of patients who were classified incorrectly
0.50190
1.5000
Percentage of patients who could not be classified unequivocally
0.5223820
1.5334311