Method for identifying calcified plaque in contrast enhanced computed tomography

Area of Science:

• Medical Imaging
• Cardiovascular Disease
• Radiology

Background:

• Arteriosclerosis contributes to significant mortality and healthcare expenses.
• Diagnosis relies on aortic wall thickness and calcified plaque volume, typically requiring separate computed tomography (CT) scans.
• Contrast-enhanced CT is used for wall thickness, while un-enhanced CT is used for plaque volume.

Purpose of the Study:

• To introduce a novel CT technique for assessing arteriosclerosis.
• To enable simultaneous measurement of aortic wall thickness and calcified plaque volume from a single contrast-enhanced scan.
• To improve diagnostic efficiency and reduce healthcare costs associated with arteriosclerosis assessment.

Main Methods:

• A new technique for measuring calcified plaque volume from contrast-enhanced CT scans was developed.
• The method adjusts for variations in contrast intensity on a slice-by-slice basis.
• This adjustment accounts for similar intensity values between contrast and calcified plaque.

Main Results:

• The technique demonstrated the ability to measure calcified plaque volume using contrast-enhanced scans.
• Results from the novel technique were compared to those obtained from traditional un-enhanced scans.
• Calculated calcified plaque volumes showed high correlation with un-enhanced scan results (slope=1.0611, r-squared = 0.9974).

Conclusions:

• The proposed CT technique accurately quantifies calcified plaque volume from contrast-enhanced scans.
• This single-scan approach simplifies arteriosclerosis diagnosis.
• The method offers a more robust and efficient alternative for assessing key diagnostic markers of arteriosclerosis.