Tools Available
using the Caliper
Function
Volume
(Bullet, Simpson)
Measures the volume of cardiac chambers
M-Mode
The following M Mode measurement tools are available by pressing the Caliper key.
Tools to be displayed in the menu area can be selected (by exam mode) in Setup/Calcs.
Additional tools may be available by exam type.
Function
Depth
Measures the distance between the probe surface and the probing point along the
Measures the vertical distance between two points.
Measures the time interval between any two points.
Measures the distance and time between two points and calculates the slope.
HR
Measures the time of n (n≤8) cardiac cycles and calculates the heart rate in M mode
PW/CW/TDI Doppler
The following Doppler measurement tools are available on PW/CW/TDI mode images by
pressing the Caliper key.
Doppler measurements can be performed by manually tracing or placing calipers, or Auto-Trace.
Measurement tools to be displayed in the menu area can be selected (by exam mode) in
Setup/Calcs. Content may vary by Exam Type.
Function
Trace
On PW mode images, one or several Doppler waveforms are traced to obtain the
velocity, PS, ED, PS/ED, RI, AT, HR, TAMX, PG, PI. Etc.
Measurement methods available include 2PT (two points), manual, spline and auto.
Velocity or
On Doppler mode images, velocity of a point on the Doppler spectrum waveform are
measured.
Velocity Pairs On Doppler mode images, velocity of a pair of waveforms is measured.
Measures the Resistive Index of a waveform
Measures the Pulsatility Index of a waveform
Acceleration,
The velocity and time interval between two points are measured to calculate the
speed difference and acceleration or deceleration.
Measures the time interval between any two points.
A/B
Velocity of two peaks on the Doppler spectrum are measured to calculate the ratio
HR
N intervals (n≤8) are measured to calculate a PW mode derived HR value in Beats
Per Minute (BPM).
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