Samsung MYSONO U6 Manual do Utilizador descarregar pdf (Página 44)

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Operation Manual

Doppler, CW, M-mode, and Color Imaging Controls

When a new imaging mode is selected, both the TI and the MI will change to default settings. Each

mode has a corresponding pulse repetition frequency and maximum intensity point. In combined

or simultaneous modes, the TI is the sum of the contributions from the modes enabled, and MI is the

MI for the focal zone and mode with the largest derated intensity. If a mode is turned o and then

reselected, the system will return to the previously selected settings.

 Probes

Each probe model available has unique specications for contact area, beam shape, and center

frequency. Settings are initialized when you select a probe. Factory defaults vary according to

the probe, application, and selected mode. Defaults have been chosen below the FDA limits for

intended use.

 Depth

An increase in 2D-mode depth will automatically decrease the 2D-mode frame rate. This would

decrease the TI. The system may also automatically choose a deeper 2D-mode focal depth. A

change of focal depth may change the MI. The MI displayed is that of the zone with the largest peak

intensity.

 Application

Acoustic output defaults are set when you select an application. The factory defaults vary with

probe, application and mode. Defaults have been chosen below the FDA limits for intended use.

Related Guidance Documents

For more information about ultrasonic bioeects and related topics refer to the following:

1. AIUM Report, January 28, 1993, “Bioeects and Safety of Diagnostic Ultrasound”

2. Bioeects Considerations for the Safety of Diagnostic Ultrasound, J Ultrasound Med., Sept. 1998:

Vol. 7, No. 9 Supplement

3. Acoustic Output Measurement Standard for Diagnostic Ultrasound Equipment. (AIUM, NEMA. 1998)

4. Acoustic Output Labeling Standard for Diagnostic Ultrasound Equipment (AIUM, 1998)

5. Second Edition of the AIUM Output Display Standard Brochure, Dated March 10, 1994. (A copy of

this document is shipped with each system.)

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Samsung MYSONO U6 Manual do Utilizador Página 44