Echo pattern of the SN and the LN | No of patients | Positive predictive value | |
---|---|---|---|
With Parkinson’s disease | With atypical parkinsonian syndromes | ||
Hyperechogenic SN combined with regular echogenic LN | 58 | 6 | 0.91 |
Hyperechogenic LN combined with moderate echogenic SN at best | 1 | 28 | 0.96 |