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Operation Manual
P
r
at max. I
pi
The peak rarefactional acoustic pressure at the location where PULSE-INTENSITY
INTEGRAL is maximal (unit: MPa)
prr PULSE REPETITION RATE, the inverse number of the time interval between two
contiguous acoustic pulse (unit: Hz)
TIB BONE THERMAL INDEX, a thermal index for a focal zone formed near a bone
after the ultrasound beam passes through soft tissue, e.g. applied to a fetus (2nd
or 3rd trimester) or to the head of a neonate (through the fontanel) (unit: N/A)
TIC CRANIAL BONE THERMAL INDEX, a thermal index for an ultrasound beam
entering the body and passing through a bone, e.g. skull of children or adults
(unit: N/A)
TIS
scan
Soft tissue thermal index in scanning mode (unit: N/A)
TIS
non-scan
Soft tissue thermal index in non-scanning mode (unit: N/A)
t
d
PULSE DURATION (unit: us)
z
_at_max_Ipi,a
The location where PULSE-INTENSITY INTEGRAL is maximal (unit: cm)
z
b
DEPTH FOR BONE THERMAL INDEX (unit: cm)
z
bp
BREAK-POINT DEPTH, which is EQUIVALENT APERTURE DIAMETER multiplied by
1.5 (unit: cm)
z
s
DEPTH FOR SOFT-TISSUE THERMAL INDEX, the distance from a plane where the
product of minimum attenuated output power, ATTENUATED SPATIAL-PEAK
TEMPORAL-AVERAGE INTENSITY, and 1cm
2
is maximal at the distance range
that is equal to, or greater than, the equivalent aperture diameter multiplied
by 1.5, when the beam dimension of -12dB output is dened along the beam
alignment axis (unit: cm)
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