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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 contribution 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.
Probe
Each probe model available has unique specications for contact area, beam shape, and center frequency.
Defaults are initialized when you select a probe. Samsung Medison factory defaults vary with probe,
application, and selected mode. Defaults have been chosen below the FDA limits for intended use.
Depth
A decrease 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. Samsung Medison 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 bioeects and related topics refer to the following;
X AIUM Report, January 28, 1993, “Bioeects and Safety of Diagnostic Ultrasound”
X Bioeects Considerations for the Safety of Diagnostic Ultrasound, J Ultrasound Med., Sept. 1998: Vol.
7, No. 9 Supplement
X Acoustic Output Measurement Standard for Diagnostic Ultrasound Equipment. (AIUM, NEMA. 1998)
X Acoustic Output Labeling Standard for Diagnostic Ultrasound Equipment (AIUM, 1998)
X Second Edition of the AIUM Output Display Standard Brochure, Dated March 10, 1994. (A copy of this
document is shipped with each system.)
X Information for Manufacturer Seeking Marketing Clearance of Diagnostic Ultrasound Systems and
Transducers. FDA. September 1997. FDA.
X Standard for Real-Time Display of Thermal and Mechanical Acoustic Output Indices on Diagnostic
Ultrasound Equipment. (Revision 1, AIUM, NEMA. 1998)
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