DGH TECHNOLOGY SCANMATE FLEX, Руководство оператора

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Mode / Model: B - Mode: 12.5 MHz (B - Scan)
DGH1912
B - Mode: 20 MHz (B - Scan)
DGH1920
A - Mode: 10 MHz (A - Scan)
DGH6006
MI
(Unitless)
I
SPTA.3
(mW/cm
2
)
MI
(Unitless)
I
SPTA.3
(mW/cm
2
)
MI
(Unitless)
I
SPTA.3
(mW/cm
2
)
Sample Size 3.00 3.00 3.00 3.00 5.00 5.00
K 4.258 4.258 4.258 4.258 2.742 2.742
Mean (x) 0.149 0.105 0.169 0.155 0.133 0.522
StdDev (Sx) 0.0154 0.0260 5.20E - 3 7.24E - 3 3.24E - 3 0.0258
Limit (X) 0.215 0.216 0.191 0.185 0.142 0.593
Mode / Model: B - Mode: 35 MHz (UBM)
DGH1500 - 35
B - Mode: 50 MHz (UBM)
DGH1500 - 50
MI
(Unitless)
I
SPTA.3
(mW/cm
2
)
MI
(Unitless)
I
SPTA.3
(mW/cm
2
)
Sample Size 3.00 3.00 3.00 3.00
K 4.258 4.258 4.258 4.258
Mean (x) 0.177 0.0799 0.113 0.0262
StdDev (Sx) 3.61E - 3 0.0116 8.72E - 3 3.50E - 3
Limit (X) 0.192 0.129 0.150 0.0411
ULTRASONIC EMMISSIONS INFORMATION
The following Acoustic Output Reporting Tables show the average outputs of the samples
tested. These results include the pressure - time waveform, the Fourier transform, the pulse in-
tensity integral and the waveform analysis taken at the derated spatial peak location (z
mjPII.3
).
The Statistical Analysis of Measurement Data tables show the results of a statistical analysis was
performed on the data to examine the upper output limits, based on a one
- sided tolerance limit
approach. The mean and standard deviation of the Spatial - Peak, Time - Average Intensity and
Mechanical Index were found, and the upper output limits were calculated from the following
formula:
_____
X = x + K*Sx
__
where X is the upper output parameter limit, x is the average of the measured output
parameter, Sx is the standard deviation of the measured output parameter, and K is a factor
from Reference 11, Table A - 7 (of M.G.Natrella, Experimental Statistics, NBS Handbook 91, Octo-
ber 1963 ). A value of K was chosen which corresponds to a 90% probability that 90% of all
probes would fall below the calculated limits X. Table notation definitions listed below:
MI Mechanical Index Z at max. I
pi. α
derated spatial peak location
TIS Soft Tissue Thermal Index I
spta.3
derated spatial - peak pulse - average intensity
TIB Bone Thermal Index A
aprt
Active aperture area
TIC Cranial Bone Thermal Index F
c
center frequency (in MHz).
P output power (in mW) p
r
peak rarefactional pressure (in MPa)
T
d
pulse duration F
awf
acoustic working frequenc (in MHz)
I
pi. α
derated pulse intensity integral
STATISTICAL ANALYSIS OF MEASURMENT DATA