User`s guide

Measurements
Online Measurements
9-18 Revision D.0
Doppler Trace Measurements (Noncardiac Presets)
This section describes how to use Doppler Trace, a system function that speeds
up your exam by automatically tracing the frozen spectral Doppler display,
calculating key measurements, and displaying all information you need.
The SONOS system uses the end-diastolic velocity for the pulsatility index (PI)
and resistivity index (RI) calculations. Some members of the medical community
recommend calculating PI and RI from the minimum diastolic velocity, which
may not be at end diastole. See the Measurements and Calculations Reference for
more information.
1. Press
to enter Setup mode.
2. Touch Measure and Doppler Trace to disable Doppler Trace
functions.
Setup
Setup
Measure
Doppler Ellipse Manual M-Mode
Trace Trace Trace Ref Line