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
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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(MidLate 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