## Abstract Transcranial Doppler imaging (TCDI) has been used as a noninvasive diagnostic tool to differentiate Parkinson's disease (PD) from atypical parkinsonism by detecting hyperechogenicity in the substantia nigra (SN). To our knowledge, no TCDI data are available for Asian populations, and TC
Hyperechogenicity of the substantia nigra: pitfalls in assessment and specificity for Parkinson’s disease
✍ Scribed by Daniela Berg
- Publisher
- Springer
- Year
- 2010
- Tongue
- English
- Weight
- 244 KB
- Volume
- 118
- Category
- Article
- ISSN
- 1435-1463
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## Abstract Using transcranial sonography, an area of hyperechogenicity at the substantia nigra (SN) may be detected as a typical marker in patients with Parkinson's disease (PD) as well as in approximately 9% of healthy subjects vulnerable to nigrostriatal impairment. In this longitudinal study, w
## Abstract Increased echogenic size (hyperechogenicity) of the substantia nigra (SN) is a characteristic transcranial sonography finding in patients with Parkinson's disease (PD). The SN echogenic size does not change in the course of the disease. In order to see whether this stable ultrasound mar