Mindray DC-8 EXP Operator's Manual page 125

Tools Descriptions
MR Flow Mitral Regurgitation
Rate Flow Rate
Mitral Valve
MR Fraction Regurgitation
Fraction
Mitral Valve
Effective
MR EROA
Regurgitant Orifice
Area
Operating Procedures
1. Enter color mode, adjust the color map until the aliasing appears.
2. Select [PISA MR] in the measurement menu.
3. Measure MR Rad using PISA caliper.
Input MR Als.Vel.
4. Measure the MR spectrum by D trace to obtain:
MR Vmax
MR VTI
MR Flow, MR Flow Rate and MR EROAare calculated automatically.
If MV SV is measured, MR Fraction will be calculated automatically.
PISA AR
Aortic valve regurgitation (PISA AR) needs to be measured in Color and Doppler mode.
Study Items
Tools
AR Rad Aortic Valve Stenosis Radius
Aortic Valve Regurgitation
AR VTI
Velocity-Time Integral
Aortic Valve Regurgitation
AR Als.Vel
Aliasing Maximum Velocity
Study Results
Tools Descriptions
Aortic Regurgitation
AR Vmax
Maximum Velocity
Aortic Regurgitation
AR Flow
Flow
AR Flow Aortic Regurgitation
Rate Flow Rate
Aortic Valve
AR Fraction Regurgitation
Fraction
MR Flow Rate(ml/s)
MR Fraction
MR EROA(cm)
Descriptions
Obtained from AR VTI measurement
AR Flow(ml)
AR Flow Rate(ml/s)
AR Fraction
Formulae
π
=
2 MR Rad(cm)
MR Flow(ml)
=
(Nounit)
MV SV(ml)
π
×
2
2 MR Rad(cm)
=
2
MR Vmax(cm/s)
Operations
PISA measurement
D Trace in Doppler General Measurements
You can select to use top aliasing velocity or
bottom aliasing velocity or input the value
directly.
Formulae
π
×
2
2 AR Rad(cm) AR
=
ARV max(cm/s)
π
=
2 AR Rad(cm)
AR Flow(ml)
=
(Nounit)
AV SV(ml)
×
2
MR Als.Vel(cm /s)
×
100 %
MR Als.Vel(cm /s)
Als.Vel(cm /s)
×
AR VTI(cm)
×
2
AR Als.Vel(cm /s)
×
100 %
Cardiology 6-33