146 Chapter 6: Safety
Safety
Acoustic Output Tables
Table 5 indicates the acoustic output for all system and transducer combinations for those imaging
modes with a thermal index and mechanical index less than one.
Table 6 through Table 13 indicate the acoustic output for the system and transducer combinations
with a thermal index equal to or greater than one.
p
r
@PII
max
Peak rarefactional pressure at the point where the free-field, spatial-peak
pulse intensity integral is a maximum in Megapascals.
d
eq
@PII
max
Equivalent beam diameter at the point where the free-field, spatial-peak
pulse intensity integral is a maximum in centimeters.
FL Focal length, or azimuthal (x) and elevational (y) lengths, if different
measured in centimeters.
Table 4: Acoustic Output Terms and Definitions (Continued)
Term Definit ion
Table 5: Acoustic Output
Transducer
Model
Imaging Modes
I
SPTA.3
TI
Type
TI
Value
MI
I
pa.3
@MImax
C8/8-5 MHz 2D, M Mode 78 TIC 0.2 0.8 130.4
C11/8-5 MHz 2D, CPD/Color,
MMode,
CW Doppler
73 TIC 0.4 0.5 16.47
C15/4-2 MHz 2D, M Mode,
CW Doppler
289 TIC 0.7 0.7 45.03
C60/5-2 MHz 2D, CPD/Color,
MMode
60 TIC 0.7 0.6 37.66
HST/10-5 MHz All 182 TIB 0.4 0.3 8.89
ICT/8-5 MHz 2D, CPD/DCPD,
MMode
67 TIC 0.4 0.5 21.51
L25/10-5 MHz 2D, CPD/Color 108 TIC 0.7 0.7 40.42
L38/10-5 MHz 2D, CPD/Color,
MMode
256 TIC 0.9 0.7 109.9
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