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M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 30
Safety: Explosive Hazards
When TIC is Displayed With Normal Setting
If none of the conditions in “When MI is Displayed With the Normal Setting” on page 29 exist, a
transcranial preset is active, and any of the following conditions exist, TIS displays:
• Color is turned on.
• Angio is turned on.
• MMode Trace is the active imaging mode.
• Doppler Spectral is the active imaging mode (with 2D Live off).
If the user selects an ODS setting other than Normal, the selected index type is used as the
preferred acoustic power display format, regardless of the mode, the transducer, or the preset
that is selected.
The displayed index value does not provide an exact value of the potential for adverse bioeffects
in the patient. However, for any patient, the higher the value, the higher the potential for adverse
bioeffects. The user can minimize the potential for bioeffects by keeping the index value as low as
possible, by choosing the right transducer and making adjustments. Minimizing examination time
also minimizes bioeffects.
WARNING
The ODS power index formulas were defined for reasonable worst case patient conditions. It is
likely that a particular patient's actual conditions are better than indicated by the index. The
operator should be aware of patient conditions that mitigate the actual exposure.
Explosive
Hazards
Observe the following practices to avoid explosive hazards:
• Do not operate the system in the presence of flammable anesthetics.