The study of deep brain structures by transcranial duplex sonography and imaging resonance correlation

Area of Science:

• Neuroimaging
• Medical Ultrasound
• Neurology

Background:

• Transcranial duplex sonography (TCS) offers high-resolution imaging of deep brain structures.
• Quantitative sonographic parameters may enhance diagnostic capabilities for neurological conditions.

Purpose of the Study:

• To assess the reliability and reproducibility of third ventricle diameter and midbrain area measurements using TCS.
• To compare TCS measurements with magnetic resonance imaging (MRI) as a reference standard.

Main Methods:

• 99 patients without neurodegenerative disorders underwent TCS.
• Third ventricle diameter and midbrain area were measured by two independent investigators.
• TCS measurements were correlated with MRI findings.

Main Results:

• TCS measurements of third ventricle diameter showed excellent correlation (r=0.80) and agreement (ICC=0.89) with MRI.
• TCS measurements of midbrain area demonstrated moderate correlation (r=0.36) and agreement (ICC=0.53) with MRI.
• High inter-explorer reliability was observed for both parameters (ICC=0.98 for third ventricle, ICC=0.79 for midbrain area).

Conclusions:

• TCS is a reliable method for measuring third ventricle diameter, comparable to MRI.
• TCS shows potential for midbrain area assessment, though further validation is required.
• These quantitative parameters may hold future diagnostic value in neurology.