ADC Value of Optic Nerve in Multiple Sclerosis.

The article focuses on the diagnostic roles of various imaging modalities in neurological and vascular conditions. Magnetic resonance spectroscopy (MRS) was studied for its ability to detect metabolic changes and cerebral volume reduction in different types of dementia, particularly Alzheimer’s disease. Non-contrast enhanced magnetic resonance angiography (NCE-MRA) and duplex ultrasound (DU) were evaluated for diagnosing peripheral arterial disease in diabetic patients, showing good agreement and predictive value, especially when combined. Diffusion-weighted imaging measuring apparent diffusion coefficient (ADC) values of the optic nerve was investigated in multiple sclerosis (MS) patients, revealing increased ADC values correlating with optic nerve damage and disease duration, suggesting potential for early detection of subclinical optic neuritis. High-frequency ultrasound was assessed against MRI for acute and chronic muscle injuries, demonstrating high accuracy for chronic injuries but lower sensitivity for acute cases. Additionally, susceptibility-weighted imaging (SWI) was explored as a non-contrast alternative to gadolinium-enhanced MRI for distinguishing active from inactive MS lesions based on characteristic signal patterns.