FujiFilm SonoSite X-Porte User Manual page 144

Table 5-3: Arterial calculations
Calculation list
Left
a
Volume Flow
a
See "Considerations"
b
When the Doppler trace is measured, the result includes velocity time integral and time averaged velocity
calculations depending upon the trace type. When the waveform is manually traced, TAV and VTI are displayed.
When the waveform is automatically traced using Peak, Time Averaged Peak (TAP) and VTI are displayed. When
the waveform is automatically traced using Mean, Time Averaged Mean (TAM) is displayed and VTI is not
displayed.
WARNINGS
Calculation results for each measurement include s (systolic) and d (diastolic).
To perform an Arterial calculation
1 On a frozen Doppler spectral trace, tap Calcs.
2 Do the following for each measurement you want to take:
5-16
on page on page 5-12 for factors to consider when performing a volume flow calculation.
Trace only a single heartbeat. The VTI calculation is not valid if measured with
more than one heartbeat.
Diagnostic conclusions about blood flow based on VTI alone can lead to
improper treatment. Accurate blood flow volume calculations require both the
vessel area and velocity of blood flow. In addition, accurate blood flow velocity
is dependent on a correct Doppler angle of incidence.
Measurement name
CCA
Proximal
Middle
Distal
Bulb
ICA
Proximal
Middle
Distal
ECA
Proximal
VA
Diam(2D),TAM, TAP, or TAV (Doppler)
b
Measurements and calculations