Special Instructions; Mode Of Operation - GEM FLOW COUPLER Manual

Special instructions:

Maintenance and Cleaning:
The Monitor requires minimal maintenance. Keep it clean and free of dust.
The exterior may be cleaned using the following steps:
1. After every use, check the Monitor for any sign of damage or wear.
2. Wipe the Monitor with a dry or water-moistened soft cloth. Ensure any residual organic material is removed.
Do not pour or spray liquid directly on the Monitor. Allow to air dry before use.
3. Do not put liquid near the speaker.
The Following Sections apply to the FLOW COUPLER 20 MHz Doppler Probe
Acoustic Output:
There are no user controls meant to affect acoustic outputs. All acoustic outputs are below the application
specific pre-amendments acoustical output limit of an Ispta of 94 mW/cm2 and a MI of 1.9.
Explanation of Derivation of Derating Factor:
The derated intensity calculations are based on measured center frequency of the acoustical signal (f, MHz)
and the distance from the transducer under test to the hydrophone (z, cm) using the derating factor e.
Track 1 summary
System: 20 MHz FLOW COUPLER Monitor and Probe System
Monitor: 20 MHz FLOW COUPLER Monitor
Clinical Application B
Ophthalmic
Other (intra-operative
and post-operative)
Cardiac
Clinical Application
7.

Mode of Operation

M PWD CWD Color Combined
Doppler (Specify)
X
Symbol Index
PWD:
MI
TIS
TIB
TIC
P
r,a
P
P
1x1
z
s
z
-0.069 fz
b
Z
MI
Z
pii,a
f
awf
prr
srr
Other
(Specify)
n
pps
I
pa,a
I
spta,α
z
sii,α
I
spta
z
pii
z
sii
p
r
Pulsed Wave Doppler
Mechanical Index
Soft Tissue Thermal Index
Bone Thermal Index
Cranial Bone Thermal Index
Attenuated Peak-Rarefractional Acoustic Pressure
Power Output
Power Output through 1cm 2 of area
Depth for TIS
Depth for TIB
Depth for Mechanical Index
Depth for Peak Attenuated Pulse Intensity
Integral
Acoustic Working Frequency
Pulse Repetition Rate
Scan Repetition Rate
Number of Pulses per Ultrasonic Scan Line
Attenuated Pulse-Average Intensity
Attenuated Spatial-Peak Temporal Average
Intensity
Depth for Peak Sum of Attenuated Pulse
Spatial-Peak, Temporal-Average Intensity
Depth for Peak Pulse-Intensity Integral
Depth for Peak Sum of Pulse-Intensity Integral
Peak-Rarefractional Acoustic Pressure