Bionet FC1400 - Page 90

FC1400 User Manual
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FC1400 Operation Manual
4) Table Key
IEC
FDA
Meaning IEC60601-2-37 / FDA&NEMA UD2,UD3
α
a
Acoustic Attenuation Coefficient / Derating factor (usually 0.3 dB/cm-MHz)
Aaprt
Aaprt
-12db Output Beam Area / Active aperture area
CMI
-
Normalizing Coefficient
Deq
Deq
Equivalent Aperture Diameter
d-6
d-6
Pulse Beam Width / Beam diameter at –6 dB
deq
deq
Equivalent Beam Diameter
ƒawf
fc
Acoustic Working Frequency / Center frequency
Ipa
Ipa
Pulse-Average Intensity
Ipa,α
Ipa.3
Attenuated Pulse-Average Intensity
Ipi
PII
Pulse-Intensity Integral
Ipi,α
PII.3
Attenuated Pulse-Intensity Integral
Ita(z)
ITA
Temporal-Average Intensity
Ita,α(z)
ITA.3(Z)
Attenuated Temporal-Average Intensity at depth z
Izpta(z)
ISPTA(Z)
Spatial-Peak Temporal-Average Intensity
Izpta,α(z)
ISPTA.3(Z)
Attenuated Spatial-Peak Temporal-Average Intensity
MI
MI
Mechanical Index
P
Wo
Output Power / Time average acoustic power at the source
Pα
W.3(Z)
Attenuated Output Power / Time average acoustic power derated to depth z
P1
Wo1
Bounded Output Power / Power emitted from the central 1cm of aperture
pi
PII
Pulse Pressure Squared Integral / Pulse intensity integral
pr
pr
Peak-Rarefactional Acoustic Pressure
prα
pr.3
Attenuated Peak-Rarefactional Acoustic Pressure
prr
PRF
Pulse Repetition Rate / Pulse repetition frequency
TI
TI
Thermal Index
TIB
TIB
Bone Thermal Index
TIC
TIC
Cranial-Bone Thermal Index
TIS
TIS
Soft-Tissue Thermal Index
td
PD
Pulse Duration
X, Y
x-12,y-12
-12 dB Output Beam Dimensions
Z
Z
Distance from the Source to a Specified Point
Zb
Zsp
Depth for TIB / Depth at which the relevant index is maximum
Zbp
Zbp
Break-Point Depth
Zs
Zsp
Depth for TIS / Depth at which the relevant index is maximum