User guide

Chapter 4: Measurements and Calculations 49
Measurements
Figure 2 Percent area reduction calculation of right
carotid bulb
To calculate percent area reduction
The percent area reduction calculation involves two
manual trace measurements.
1 On a frozen 2D image, press the
CALCS key.
2 Do the following for A
1
and then for A
2
:
a From the calculations menu, select the
measurement name under Area Red.
b Using the touchpad, move the caliper to the
trace starting point, and press the
SELECT
key.
c Using the touchpad, trace the desired area.
To make a correction, select Undo on-screen
or press the
BACKSPACE key.
d Complete the trace, and press the
SET key.
e Save the calculation. See “To save a
calculation” on page 47.
The percent area reduction result appears
on-screen in the measurement and calculation
data area and in the patient report.
To calculate percent diameter reduction
1 On a frozen 2D image, press the CALCS key.
2 Do the following for D
1
and then for D
2
:
a From the calculations menu, select the
measurement name under Dia Red.
b Position the calipers. (See “Working with
calipers” on page 43.)
c Save the calculation. See “To save a
calculation” on page 47.
The percent diameter reduction result appears in
the measurement and calculation data area and in
the patient report.
Transducer Exam Types
C11x Abdomen, Vascular
C60x Abdomen, Msk
HFL38x IMT, Small Parts, Vascular
HFL50x Msk, Small Parts
L25x Msk, Vascular
L38x IMT, Small Parts, Vascular
L38xi IMT, Msk, Small Parts, Vascular
P10x Abdomen
P21x Abdomen
SLAx Msk, Vascular