User guide

Chapter 4: Measurements and Calculations 47
Measurements
• Pulsatility Index (PI)
• End Diastolic Velocity (EDV)
• Acceleration Time (AT)
• Resistive Index (RI)
• Time Average Peak (TAP)
•Gate Depth
General calculations
Within calculations, you can save measurement
results to the patient report. You can display,
repeat, and delete measurements from a
calculation. Some measurements can be deleted
directly from the patient report pages. See
“Patient report” on page 72.
Calculation packages depend on exam type and
transducer.
Calculations menu
The calculations menu contains measurements
available for the imaging mode and exam type.
After you perform and save a measurement, the
result saves to the patient report. (See “Patient
report” on page 72.) Also, a check mark appears
next to the measurement name in the calculations
menu. If you highlight the checked measurement
name, the results appear below the menu. If you
repeat the measurement, the results below the
menu reflect either the last measurement or the
average, depending on the measurement.
Menu items followed by ellipses (. . .) have
subentries.
To select from the calculations menu
1 On a frozen image, press the CALCS key.
The calculations menu appears.
2 Using the touchpad or arrow keys, highlight the
desired measurement name.
To display additional measurement names,
highlight Next, Prev, or a measurement name
that has ellipses (. . .). Then press the
SELECT
key.
Only measurement names available for the
imaging mode are selectable.
3 Press the
SELECT key.
To close the calculations menu, press the
CALCS key
once (if the menu is active) or twice (if the menu
is inactive).
Performing and saving measurements
in calculations
In performing a measurement within a calculation,
you select from the calculations menu, position the
calipers that appear, and then save the calculation.
Unlike measurements performed outside a
calculation, the calipers appear by selecting from
the calculations menu, not by pressing the
CALIPER
key. The type of calipers that appear depends on
the measurement.
To save a calculation
 Do one of the following:
• Save the calculation only: Press the
SAVE CALC key, or select Save on-screen.
The calculation saves to the patient report.
To save the image with the measurements
displayed, see “To save an image” on
page 38.
• Save both the image and calculation: Press
the
SAVE key if the SAVE key functionality is
set to Image/Calcs. (See “Presets
setup” on page 22.)
The calculation saves to the patient report,
and the image saves to internal storage with
the measurements displayed.