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Noninvasive evaluation of right ventricular function.

R A Johnson, L J Rubin

Clinics in Chest Medicine

|March 1, 1987

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Noninvasive methods like echocardiography and MRI offer valuable insights into right ventricular function. While physical exams and ECGs provide clues, advanced imaging techniques are crucial for accurate assessment of right ventricular dysfunction.

Area of Science:

Cardiology
Medical Imaging
Physiology

Background:

Physical examination and electrocardiography (ECG) offer limited diagnostic value for right ventricular dysfunction.
Chest X-rays have restricted utility in assessing right ventricular function.

Purpose of the Study:

To review current technologic advances in noninvasive analysis of right ventricular function.
To highlight the diagnostic capabilities of various imaging modalities for right ventricular assessment.

Main Methods:

Echocardiography (M-mode, 2D, Doppler, color-flow mapping) for chamber size, wall motion, and flow dynamics.
Radionuclide imaging (blood-pool, perfusion, avid scanning) for ejection fraction, wall motion, and myocardial injury.
Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) for volumetric analysis, wall motion, and flow quantification.

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Main Results:

Echocardiography provides accurate assessment of chamber dimensions, wall motion, and valvular regurgitation, with Doppler estimating pulmonary artery pressures.
Radionuclide imaging accurately determines ejection fraction and wall motion, with potential for pressure estimation and serial assessment.
MRI shows promise as a leading technique for comprehensive right ventricular function analysis, including flow dynamics and potential biochemical assessment.

Conclusions:

Advanced imaging techniques, particularly echocardiography and MRI, are essential for accurate noninvasive evaluation of right ventricular function.
While traditional methods offer some insights, modern technologies provide detailed functional and structural information crucial for diagnosing and managing right ventricular conditions.