FujiFilm VisualSonics Vevo MD User Manual page 421

P
r.3
p @PII
r max
PRF
TI type
TI value
TIB
TIC
TIS
W (z )
.3 1
Wo
Derated peak rarefactional pressure associated with the
transmit pattern giving rise to the value reported under MI
(Megapascals).
Peak rarefactional pressure at the point where the free-
field, spatial-peak pulse intensity integral is a maximum in
Megapascals.
Pulse repetition frequency associated with the transmit
pattern giving rise to the reported value of MI in Hertz.
Applicable thermal index for the transducer, imaging
mode, and exam type.
Thermal index value for the transducer, imaging mode, and
exam type.
(Bone thermal index) is a thermal index for applications in
which the ultrasound beam passes through soft tissue and
a focal region is in the immediate vicinity of bone. TIB non-
scan is the bone thermal index in the non-autoscanning
mode.
(Cranial bone thermal index) is the thermal index for
applications in which the ultrasound beam passes through
bone near the beam entrance into the body.
(Soft tissue thermal index) is a thermal index related to
soft tissues. TIS scan is the soft tissue thermal index in an
auto-scanning mode. TIS non-scan is the soft tissue
thermal index in the non-autoscanning mode.
Derated ultrasonic power at axial distance z
milliwatts.
Ultrasonic power, except for TIS
the ultrasonic power passing through a one centimeter
in units of
1
, in which case it is
scan
Glossary 421