Quatech Audio/Video Capture USB 2.0 Especificaciones descargar pdf (Pagina 222)

9-20 z.one ultra and z.one ultra sp OPERATOR MANUAL

6. To activate additional distance measurements (up to a maximum of four),

press Enter button (Enter/Select button on

SmartCart sp) twice - once to

complete the current measurement instance and a second time to invoke

another Distance measurement instance.

7. Press Measure button to remove Distance tools and exit Measure mode.

PW Doppler

Mode

Velocity Velocity is measured (relative to selected Scale and Baseline position) at the

caliper’s position in the PW Doppler strip.

• The System displays the Velocity measurement result in the DDB and

continuously updates the result as the user positions the caliper within the

PW Doppler strip image.

 To Measure Velocity

1. Acquire a live or frozen PW Doppler strip image.

2. Press Measure button.

3. Use the Trackball to position the caliper to the desired location within the PW

Doppler strip display. The DDB updates the velocity result as the user

positions the caliper within the strip image.

4. To activate additional Velocity measurements (up to a maximum of four),

press the Enter button (Enter/Select button on

SmartCart sp) twice - once to

complete the current measurement instance and a second time to invoke

another Velocity measurement instance.

5. Press the Measure button to remove the Velocity tools and exit Measure

mode.

Resistivity

Index

Resistive Index (RI) is defined as abs [(Max – Min)/Max], where Max and Min are

determined by comparing the absolute velocities obtained by two concurrent PW

Velocity calipers positioned within the context of the same PW Doppler strip.

• Only a single instance of this tool can exist at any one time.

• In the DDB, Max velocity is identified as PSV (Peak Systolic Velocity) and

Min velocity is identified as EDV (End Diastolic Velocity).

SmartCart/SmartCart sp

Can simultaneously display up to four Distance

measurements on a PW Doppler strip image

SmartCart/SmartCart sp

Continuously displays both Velocity results and

their associated RI results in the DDB when the

user positions either caliper within the PW

Doppler strip

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Quatech Audio/Video Capture USB 2.0 Especificaciones Pagina 222