PadScan HD 2
Caresono Technology Co., Ltd
35
PRF
the pulse repetition frequency associated with the transmit pattern giving rise to
the reported value of MI (Hz).
p
r
@PII
max
the peak rarefactional pressure at the point where the free field, spatial-peak pulse
intensity integral is a maximum (megapascals). See Section 6.2.4.1 of the Output
Display Standard, entitled "Measurement Methodology for Mechanical and
Thermal Indices".
d
eq
@PII
max
the equivalent beam diameter at the point where the free field, spatial-peak pulse
intensity integral is a maximum (centimeters). See Section 6.2.5.1 of the Output
Display Standard, entitled "Measurement Methodology for Mechanical and
Thermal Indices".
FL
the focal length, or azimuthal and elevational lengths, if different (centimeters).
I
PA.3
@MI
max
the derated pulse average intensity at the point of maximum reported MI (Watts
per square centimeter).
p_
MPa The Peak Rarefactional Acoustic Pressure is the maximum of the
modulus of the negative instantaneous acoustic pressure expressed
as a positive number.
I
SPTA
mW/
cm²
The maximum value of the temporal average derived intensity in an
acoustic field. For systems in combined operating mode, the time interval
over which the temporal average is taken is sufficient to include any period
during which scanning may not be taking place.
System
settings
a
User selectable system settings which may include Application, SV
and Focal Length.
I
p
mm
This is the distance from the transducer output face to the point of
maximum pulse-pressure-squared integral (or max mean square
acoustic pressure for continuous pressure for CW)
w
pb6
(||)
mm
This is the -6dB pulse beam width in the beam axis (X) at the point
of max pulse-pressure-squared integral (or max mean square
acoustic pressure for continuous pressure for CW). If the beam
widths in X and Y differ than less than 10%, there is no need to
specify both. For scanning modes, the beam-widths shall
correspond to the central scan line only.
w
pb6
(_|_)
mm
This is the -6dB pulse beam width in the elevational axis (Y) at the
point of max pulse-pressure-squared integral (or max mean square
acoustic pressure for continuous pressure for CW). If the beam
widths in X and Y differ than less than 10%, there is no need to
specify both. For scanning modes, the beam-widths shall
correspond to the central scan line only.
Prr
kHz
Pulse Repetition Rate is the rate of successive pulses or tone bursts and
applies to single element non-scanning systems and automatic
scanning systems.
Srr
Hz
Scan Repetition Rate is the rate of the same identical point of
successive frames, sectors, or scans and applies to automatic
scanning systems (modes) only.
Output beam
mm
Output beam dimensions are the dimensions of the ultrasound
