A novel method for quantification of left ventricular noncompaction using two-dimensional echocardiography in...

Area of Science:

• Cardiology
• Medical Imaging
• Diagnostic Techniques

Background:

• Left ventricular noncompaction diagnosis lacks consensus, relying on maximal noncompaction areas.
• Current echocardiographic criteria can lead to misdiagnosis if maximal involvement is missed.

Purpose of the Study:

• To introduce and validate a novel two-dimensional echocardiography method for quantifying myocardial noncompaction percentage.
• To establish a more reliable diagnostic tool for left ventricular noncompaction.

Main Methods:

• A new method was tested on subjects with noncompaction, dilated cardiomyopathy, and normal controls.
• Myocardial noncompaction percentage was measured at apical, papillary muscle, and mitral valve levels and averaged.

Main Results:

• The noncompaction group showed a significantly higher mean noncompaction percentage (34.7%) compared to dilated cardiomyopathy (8.86%) and controls (3.59%).
• A threshold of 17% effectively distinguished left ventricular noncompaction with high sensitivity and specificity.
• The measured percentage correlated significantly with the noncompacted to compacted myocardial thickness ratio.

Conclusions:

• The proposed method is accurate, reliable, and does not depend on identifying maximal noncompaction areas.
• This echocardiographic technique is comparable to magnetic resonance imaging in accuracy but is more accessible and easier to perform.