Evaluation of Coronary Artery Diffuse Calcification Stenosis by Corrected Coronary Opacification Difference

Area of Science:

• Cardiology
• Medical Imaging
• Diagnostic Techniques

Background:

• Coronary computed tomographic angiography (CCTA) is challenged by calcification artifacts in diagnosing coronary stenosis.
• Accurate assessment of stenosis in diffusely calcified coronary arteries (DCCAs) is crucial for patient management.

Purpose of the Study:

• To evaluate the diagnostic utility of corrected coronary opacification (CCO) difference for stenosis in DCCAs.
• To determine if CCO difference can overcome calcification artifacts in CCTA.

Main Methods:

• 84 patients with DCCAs underwent CCTA to measure CCO difference.
• Coronary arteries were categorized by stenosis severity using invasive coronary angiography (ICA).
• Statistical analysis included Kruskal-Wallis H test and ROC curve analysis for diagnostic efficacy.

Main Results:

• 122 coronary arteries were analyzed; 64 had 70-99% stenosis.
• Median CCO differences varied significantly between stenosis groups (P < 0.05).
• ROC analysis yielded an area of 0.681, with 84.4% sensitivity and 44.8% specificity for ≥70% stenosis at a cut-off of 0.292.

Conclusions:

• CCO difference shows potential for diagnosing ≥70% severe coronary stenosis in DCCAs.
• This non-invasive CCO metric can serve as a supplementary tool for clinical guidance.
• Further validation may enhance its role in managing DCCA patients.