VDO MG 2100 Especificações descarregar pdf (Página 230)

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230 VisualSonics Vevo 2100 Imaging System Operator Manual Rev 1.1

Chapter 35: Acquiring M-Mode images

Transmit Power

Adjusts the power of the ultrasound signal transmission.

Turn clockwise to increase power. Turn counterclockwise to decrease power. Between

1% and 10% power the control adjusts power in increments of 1%. Between 10% to 100%

power the control adjusts in increments of 10%.

Frequency

Adjusts the transmit frequency of the transducer between the higher and lower

frequency levels that are supported by the specific transducer. When you increase the

frequency you can improve detail at the focus depth but the system tends to lose detail at

deeper tissues.

Push forward to increase the frequency. Pull back to decrease the frequency.

Focal Zones

This control adjusts the number and configuration of focal zones on your B-Mode based

image.

Focal zones enhance the resolution across your image, while slightly reducing the

acquisition frame rate. The system always displays at least one focal zone, and you can

apply a maximum of two additional zones depending on the transducer. When you add

focal zones the system maximizes the resolution for a larger area of your image, and

reduces the acquisition frame rate.

To use this rocker switch control:

1. Push the rocker switch forward to cycle through the following focal zone application

sequence:

 Single zone

 Two zones, narrow

 Two zone, wide

 Three zones, narrow

 Three zones, wide

2. Pull the rocker switch back to cycle back through the focal zone options in reverse.

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