8-3
PD : the pulse duration
PRF : the puls repetition frequency
EBD : the entrance beam dimensions for the azimuthal and elevational planes
Acoustic Output Report (IEC60601-2-37)
a : ACOUSTIC ATTENUATION COEFFICIENT
Aaprt : -12dB OUTPUT BEAM AREA
Deq : EQUIVALENT APERTURE DIAMETER
deq : EQUIVALENT BEAM DIAMETER
fawf : ACOUSTIC WORKING FREQUENCY
Ipa : PULSE-AVERAGE INTENSITY
Ipa, a : ATTENUATED PULSE-AVERAGE INTENSITY
Ipi : PULSE-INTENSITY INTEGRAL
Ipi, a : ATTENUATED PULSE-INTENSITY INTEGRAL
MI : MECHANICAL INDEX
P : OUTPUT POWER
Pa : ATTENUATED OUTPUT POWER
Pr : PEAK-RAREFACTIONAL ACOUSTIC PRESSURE
Prr : PULSE REPETITION RATE
TIS : SOFT-TISSUE THERMAL INDEX
td : PULSE DURATION
X,Y : -12dB OUTPUT BEAM DIMENSIONS
Maximum index value
pr,
[Mpa]
P [mW]
Min.of [P
(zs),Ita, (zs)]
Zs
zbp
Zb
Z at max.Ipi,
[cm]
deq (zb)
fawf [MHz]
Dim of Aaprt [cm]
Td [us]
Prr [Hz]
Pr at max.Ipi [MPa]
deq at max.Ipi
Ipa,
at max.MI [W / cm
2
]
Control
0.15
0.44
NA
NA
NA
NA
NA
0.05
NA
19.9
NA
NA
0.075
8000
0.45
NA
26.21
NA
2.005
10
-3
NA
0.0211
NA
NA
NA
NA
NA
NA
19.9
0.19
0.18
NA
NA
NA
NA
NA
NA
NA : Not Applicable
Associated
acoustic
parameters
Other
information
Operating
control
conditions
X
Y
Index label MI
TIS
Non-scan(Aaprt 1cm
2
)
8.2 Ultrasound energy and other consumptions