Terason t3000, User Manual

Page: 167 / 421

Chapter 7 - Working With Measurements Measuring in the Spectral Doppler Modes
Terason t3000 / Echo Ultrasound System User Guide 167
The Measurement section of the panel controls the following operations:
• Measuring Vessel Blood Velocities ; see page 171
• Calculating Arterial Ratios ; see page 172
• Measuring Heart Rate and Rise Time ; see page 173
• Measuring Flow Volume ; see page 174
You can use the CA (correction angle) arrows and the 0/+-60 button to adjust the angle on
the frozen scan. This function works the same as the Correction Angle on the PWD tab as
described in
Adjusting the Correction Angle on page 112.
The Vessel Info section lets you label the scanned vessel. When you make a measurement,
you can identify what is being measured by selecting:
• Laterality (right or left)
• Location (prox, mid, or distal)
• Vessel
Ratio is used to indicate whether the selected vessel will be used as Artery 1 or Artery 2 in
an arterial ratio calculation (see
Calculating Arterial Ratios on page 172).
The vessel wall markers move the top and bottom of the gate along the ultrasound cursor
when measuring flow volume as described in
Measuring Flow Volume on page 174.
Note: You can only make one measurement of each type on a scan. For example, you
cannot have two Flow Volume measurements on the same scan. If you need to edit
a measurement, you can move one or both of the endpoints, or you can delete it and
start over.