M-Mode Echocardiography

John N. Hamaty D.O.

SJHG

M-Mode Echo

• Used in combination with 2-dimentional

• Rapid sampling of a region results in placing sequential parallel data lines so close together that individual points of brightness appear as continuous horizontal lines.

• 90 degrees to sample- “ice pick”

M-Mode Echo

• This narrow field allows fewer pulses with a higher frame rate and therefore better temporal resolution

• Factors that shorten the time required to make a frame will act to improve temporal resolution.

Improving Temporal Resolution

• Minimize depth of view

• Use single focus

• Narrow sector

• Minimize line density

• As temporal resolution improves, image quality may degrade.

Mitral Valve Disease

M-Mode Echo

Anterior Mitral Valve Prolapse(Mid-Late Systole)

Mitral Stenosis

Aortic Insufficiency with fluttering of Mitral Valve

Mitral Valve Endocarditis

Aortic Valve Disease

M-Mode Echo

Critical Aortic Stenosis

Early closure of AV due to Severe LV dysfun

St Jude Prosthetic Aortic Valve

Pulmonic Valve Disease

M-Mode Echo

Pulmonary HTN with “Flying W sign”

Left Ventricle

M-Mode Echo

Dilated Cardiomyopathy

“B” bump due to elevated EDP

Hypertrophic Cardiomyopathy

Paradoxic Septal Motion