Cardiovascular Imaging in Obesity.

Area of Science:

• Cardiovascular Imaging
• Obesity Research
• Public Health

Background:

• Obesity is a leading global health issue, contributing significantly to cardiovascular disease mortality.
• Accurate cardiovascular assessment in obese patients is crucial for managing associated health risks.
• Existing imaging modalities like echocardiography and nuclear cardiology face limitations in obese populations.

Purpose of the Study:

• To evaluate the utility of various noninvasive cardiovascular imaging techniques in obese subjects.
• To highlight the potential of cardiac magnetic resonance (CMR) as a comprehensive imaging tool.
• To address the challenges posed by obesity in cardiovascular disease assessment.

Main Methods:

• Review of current noninvasive cardiovascular imaging techniques: echocardiography, nuclear cardiology, coronary computed tomography angiography, and cardiac magnetic resonance (CMR).
• Analysis of the limitations of each modality in the context of obesity (e.g., acoustic window, attenuation artifacts, radiation exposure).
• Focus on the capabilities of CMR for assessing cardiac function, structure, and tissue characteristics.

Main Results:

• Echocardiography and nuclear cardiology demonstrate significant limitations in obese patients.
• Coronary computed tomography angiography provides information on obstructive coronary disease but involves radiation.
• Cardiac magnetic resonance (CMR) offers a comprehensive, radiation-free approach to cardiovascular evaluation.

Conclusions:

• Cardiac magnetic resonance (CMR) presents a promising 'all-in-one' solution for cardiovascular assessment in obese individuals, overcoming limitations of other methods.
• CMR can evaluate function, wall motion, thickness, perfusion, and fibrosis without radiation exposure.
• Further research is needed to establish the cost-effectiveness of CMR for evaluating cardiovascular risk in overweight and obese children and adolescents.