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HD11 XE Getting Started
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Safety
Transducer
Each transducer type has unique specifications for contact area, beam shape, and
center frequency. Presets are initialized in 2D mode when you select a transducer.
Factory presets vary with transducer and selected mode. With each new trans-
ducer selected, the MI and TI displayed values are likely to change.
Depth
An increase in 2D depth will automatically decrease the 2D frame rate. This
would decrease the TI. The system may also automatically choose a deeper 2D
focal depth. A change of focal depth may change the MI. The MI displayed is that
of the zone with the largest MI value.
Preset
Factory presets vary with transducer and selected mode. A change in preset
while a transducer is active will change some of the controls listed above, which
can change the MI and TI values in the ways indicated for each relevant control.
Related Guidance Documents
For more information about ultrasonic bioeffects and related topics, see the fol-
lowing:
1. AIUM Report, January 28, 1993, “Bioeffects and Safety of Diagnostic Ultra-
sound”
2. Bioeffects Considerations for the Safety of Diagnostic Ultrasound, J Ultrasound
Med., Sept. 1988: Vol. 7, No. 9 Supplement
3. Acoustic Output Measurement Standard for Diagnostic Ultrasound Equip-
ment. (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 provided with each system.)
6. Information for Manufacturers Seeking Marketing Clearance of Diagnostic
Ultrasound Systems and Transducers. FDA. September 1997. FDA.
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