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4.3 Amplifier characteristics of the A-scan diagnosis
The I/O characteristics of the log amplifier, linear amplifier, and S-curve
amplifier selected for the A-scan diagnosis are as shown below.
4.4 Checking the software version
Refer to “3.12.2 r) Version Information.”
4.5 Ultrasound wave output
4.5.1 MI (mechanical index)
MI is a parameter that indicates the mechanical effects of ultrasound
waves on biological tissue.
Mechanical effects are, for example, movement (or flow) around air
bubbles compressed when an acoustic pressure wave of the ultrasound
wave passes through biological tissue, or energy released when
cavitation temporarily bursts the air bubbles.
4.5.2 TIS (thermal index of soft tissue)
TIS is a parameter that indicates the thermal effects of ultrasound waves
on biological tissue.
Thermal effects mean an increase in the tissue temperature due to
emission of ultrasound waves.
Output
Log amplifier
Linear amplifier
S-curve amplifier
Input
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