New perspectives in computed tomography of multiple sclerosis

Area of Science:

• Neurology
• Radiology
• Medical Imaging

Background:

• Multiple sclerosis (MS) diagnosis relies on identifying demyelinating lesions.
• Standard computed tomography (CT) with contrast may not detect all enhancing lesions.
• Early and accurate diagnosis is crucial for effective management of multiple sclerosis.

Purpose of the Study:

• To compare the efficacy of standard contrast-enhanced CT and high-volume contrast-delayed CT for detecting enhancing lesions in patients with suspected multiple sclerosis.
• To evaluate the diagnostic utility of the high-volume delayed technique in uncertain clinical presentations.

Main Methods:

• A prospective study of 70 patients with suspected acute or relapsing multiple sclerosis.
• Comparison of standard contrast-enhanced CT with high-volume contrast-delayed CT.
• Analysis of lesion detection rates and diagnostic contributions of each imaging method.

Main Results:

• High-volume delayed CT identified more enhancing lesions than standard CT in patients with definitive multiple sclerosis (32 vs. 25 cases).
• The high-volume delayed technique provided additional diagnostic information in 23 of 32 positive cases.
• In cases with uncertain clinical diagnosis, high-volume delayed CT detected clinically unsuspected lesions, aiding definitive diagnosis.
• Enhancing plaques in cortical gray matter and gray/white matter regions were visualized for the first time with this technique.

Conclusions:

• High-volume contrast-delayed CT is a valuable tool for detecting enhancing lesions in multiple sclerosis.
• This technique enhances diagnostic accuracy, particularly in cases with uncertain initial clinical presentation.
• The method allows for the visualization of lesions in previously difficult-to-detect areas like the gray matter.