232 Chapter 16
D-mode (Doppler) Measurements
Table 16-4. Doppler measurements in the Urology Pro Package.
For more information about Doppler measurements, see Chapter 19, “Small Parts
Pro”.
Calculating Volumes
Organ volumes can be calculated in several ways. For the formulas used for each of
these calculations, and information about their accuracy, see “Urology Calculation
Formulas” on page 235 and “Accuracy of Calculations” on page 237.
Measurement
Description
Measuring Tool
General (angle correction off)
F1, F2
Frequency at position of
marker 1 or 2
1 marker for each
F1/F2
Index
2 markers (for F1 and F2)
dF
Frequency difference
2 markers (for F1 and F2)
dT
Time difference
2 markers
General (angle correction on)
V1, V2
Velocity at position of
marker 1 or 2
1 marker for each
V1/V2
Index
2 markers (for V1 and V2)
dV
Velocity difference
2 markers (for V1 and V2)
dT
Time difference
2 markers
TAM
Time Average Mean
2 markers or freehand curve
VF Area
Volume Flow (VF Dist, VF
Circle, VF Ellipse)
Distance, Circle, Ellipse
VF
Volume Flow
Distance or area measuring tool for
VF Area and drawing for TAM.
RI/PI
PS
Peak Systolic velocity
1 marker
ED
End Diastolic velocity
1 marker
RI
Resistance Index
(PS-ED)/PS (Measure PS, then ED)
PI
Pulsatility Index
2 markers or freehand curve
Содержание Pro Focus 2202
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