Olympus EVIS EXERA II - Appendix E: Acoustic Output Information Accordance with; Iec 60601-2-37; Acoustic Output Table with Hitachi or FUJIFILM Healthcare Diagnostic Ultrasound System

Appendix E: Acoustic Output Information Accordance with IEC 60601-2-37
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ULTRASOUND GASTROVIDEOSCOPE GF-UCT180
Appendix E: Acoustic Output
Information Accordance with
IEC 60601-2-37
Acoustic output table with Hitachi or FUJIFILM
Healthcare diagnostic ultrasound system
The terms used in the acoustic output table are as follows:
Acoustic attenuation coefficient
–12 dB output beam area
Normalizing coefficient
Equivalent aperture diameter
Pulse beam width
Equivalent beam diameter
ƒ
awƒ
Acoustic working frequency
Pulse-average intensity
Attenuated pulse-average intensity
Pulse-intensity integral
Attenuated pulse-intensity integral
Temporal-average intensity
Attenuated temporal-average intensity
Spatial-peak temporal-average intensity
Attenuated spatial-peak temporal-average intensity
Mechanical index
Output power
Attenuated output power
Bounded output power
Pulse pressure squared integral
α
A
aprt
A
eq
(z)
D
eq
d
6–
d
eq
I
pa
I
pa
, α
I
pi
I
pi
,
α
I
ta
(z)
I
ta
, α
(z)
I
zpta
(z)
I
zpta
, α
(z)
MI
P
P
α
1
P
i
p