
Q9 Digital Color Doppler Ultrasound System
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4.3.14.
HPRF Mode
High Pulse Repetition Frequency (HPRF) is a special operating mode of PW Doppler. In HPRF mode,
multiple energy pulses are used. This allows higher velocities to be detected without causing aliasing artifacts.
HPRF mode is used when detected velocities exceed the processing capabilities of the currently selected PW
Doppler scale or when the selected anatomical site is too deep for the selected PW Doppler scale.
HPRF is invoked when you are operating in PW Doppler mode and conditions activate HPRF when the
velocity scale factor or sample volume gate depth exceeds certain limits. When HPRF is active, multiple sample
volume gates appear along the Doppler cursor. Doppler information can be received from any of the multiple
sample volume gates. The Doppler signals from all the gates are added together and displayed in one spectrum.
It works with a phased array or pediatric probe.
4.3.15.
Panoramic
Moving through the probe to get a series of B-mode images, Press Freeze key and turn the menu on, select Image
Stitch item, turn it on. The system will enter into panoramic mode.
Содержание Q9
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