Comprehensive Evaluation of Left Ventricle Dysfunction by a New Computed Tomography Scanner: The E-PLURIBUS Study

Area of Science:

• Cardiology
• Medical Imaging
• Diagnostic Technology

Background:

• Cardiac magnetic resonance (CMR) is the gold standard for myocardial fibrosis detection.
• Cardiac computed tomography (CCT) is an emerging alternative for cardiac assessment.

Purpose of the Study:

• To evaluate the feasibility and diagnostic accuracy of CCT.
• To compare CCT with CMR for comprehensive functional and anatomical assessment in newly diagnosed left ventricular dysfunction (LVD).

Main Methods:

• 128 patients with newly diagnosed LVD were screened; 94 formed the study population.
• CCT was performed within 10 days of CMR, assessing biventricular volumes, ejection fraction, and delayed enhancement (DE).
• Coronary arteries were evaluated, and patients underwent invasive angiography within 6 months post-CCT.

Main Results:

• High concordance (94.7%) between CCT and CMR for LVD cause, with 100% accuracy for ischemic cardiomyopathy.
• CCT demonstrated high diagnostic rates and accuracy for DE assessment (96.7% and 94.8%, respectively), comparable to CMR.
• Biventricular volumes and function parameters were similar between CCT and CMR, with CCT accurately assessing coronary circulation.

Conclusions:

• CCT is an effective noninvasive tool for comprehensive assessment of LVD patients.
• Low-dose CCT with high-concentration contrast agent provides accurate myocardial fibrosis and function evaluation.
• CCT offers a feasible and accurate alternative to CMR for LVD assessment.