Association between the time for contrast to pass through the myocardium, risk profile and hemodynamic parameters

Area of Science:

• Cardiology
• Medical Imaging
• Physiology

Background:

• Coronary microcirculation assessment is crucial in cardiovascular disease diagnosis.
• Non-significant epicardial coronary artery disease can still involve microvascular dysfunction.
• Novel imaging techniques are needed to evaluate myocardial perfusion non-invasively.

Purpose of the Study:

• To introduce and evaluate the time for contrast to pass through the myocardium (TCPM) as a novel fluoroscopic method.
• To assess the utility of TCPM for evaluating coronary microcirculation.
• To investigate TCPM in patients with non-significant epicardial coronary artery disease.

Main Methods:

• Utilized a novel fluoroscopic approach to measure contrast transit time within the myocardium.
• Applied the TCPM method in a cohort of patients diagnosed with non-significant epicardial coronary artery disease.
• Analyzed fluoroscopic data to quantify myocardial contrast passage.

Main Results:

• The time for contrast to pass through the myocardium (TCPM) was successfully measured using fluoroscopy.
• Preliminary data suggest TCPM can provide insights into coronary microcirculation.
• The method demonstrated feasibility in the target patient population.

Conclusions:

• The time for contrast to pass through the myocardium (TCPM) represents a promising new fluoroscopic tool.
• TCPM holds potential for assessing coronary microcirculation in specific patient groups.
• Further validation studies are warranted to establish the clinical utility of TCPM.