12. The Cardiac Cycle
• Ventricular filling
– DIASTOLE
– AV valves are opened
– SV are closed
•
• Ventricular emptying
– SYSTOLE
– AV valves are closed
– SV are opened
30. • M-Mode is obtained by
placing a cursor through
structures of interest in the
Heart
• Only structures transected by
this line are imaged and they
are plotted against time to
form a tracing
M-Mode echocardiography
31. • A graph against time of the
position of the reflecting
structures of the heart relative
to the marker is produced
• The M-Mode, or Time
Motion, makes accurate
measurements of dimensions
and velocity of motion
M-Mode echocardiography
36. • To assess blood flow VELOCITY and DIRECTION
• PWD is used when the exact location of the blood
flow sampled needs to be known
• CWD is used when we need to determine the peak
velocity of blood flow through a particular valve
DOPPLER
37. • Blood flow from the LA to the LV
• Diastole
• Displayed above the baseline
FLOW PATTERNS
MITRAL VALVE FLOW
38. • Blood ejected from the LV into the Ao
• Systole
• Displayed below the baseline
FLOW PATTERNS
AORTIC VALVE FLOW
39. • Blood flow from the RA to the RV
• Diastole
• Displayed above the baseline
FLOW PATTERNS
TRICUSPID VALVE FLOW
40. • Blood ejected from the RV into the PA
• Systole
• Displayed below the baseline
FLOW PATTERNS
PULMONARY VALVE FLOW
41. • To assign colors to flow direction and
show the entire area of any flow, normal
or abnormal, within the Heart
• Quick visual search of flow anomalies.
• Standard practice is “BART”
COLOR FLOW DOPPLER
in Echocardiography
