Sonoscape SSI-6000

SSI-6000/SSI-5800/SSI-5500/SSI-5500BW
Digital Color Doppler Ultrasound System
Pr’ is the de-rated (0.3) peak rare-fractional pressure in Mpa at the point where PII is
the maximum, and fc is the center frequency in MHz. PII is the Pulse Intensity Integral
that the total energy per unit area carried by the wave during the time duration of the
pulse.
The peak rare-fractional pressure is measured in hydrophone maximum negative
voltage normalized by the hydrophone calibration parameter.
Display Guideline
For different operation modes, different indices must be displayed. However, only
one index needs to be shown at a time. Display is not required if maximum MI
is less than 1.0 for any setting of the operating mode, or if maximum TI is less
than 1.0 for any setting of the operating mode. For TI, if the TIS and TIC are
both greater than 1.0, the scanners need not be capable of displaying both indices
simultaneously. If the index falls below 0.4, no display is needed. The display
increments are no greater than 0.2 for index value less than one and no greater
than 1.0 for index values greater than one (e.g. 0.4, 0.6, 0.8, 1, 2, 3).
Display and Report in Different Mode
For B-Scan Mode
Only display and report MI, and start from 0.4 if maximum MI > 1.0
For Color Mode
Only display and report TIS or TIB and start from 0.4 if maximum TI > 1.0
For Doppler Mode
Only display and report TIS or TIB and start from 0.4 if maximum TI > 1.0
Below is a simple guideline for the user when TI exceeds one limit exposure time
to 4(6-TI) minutes based on the National Council on Radiation Protection. Ex-
posure Criteria for Medical Diagnostic Ultrasound: I. Criteria Based on Thermal
Mechanisms. Report No.113 1992:
Operator Control Features
The user should be aware that certain operator controls may affect the acoustic
output. It is recommended to use the default (or lowest) output power setting and
compensate using Gain control to acquire an image. Other than the output power
setting in the soft-menu, which has the most direct impact on the power; the PRF,
image sector size, frame rate, depth, and focal position also slightly affect the
output power. The default setting is normally around 70% of the allowable power
depending on the exam icon.
1.5 Environmental Requirements
The following environmental conditions are within system tolerances for operation:
Relative Humidity: 30%∼75%, no condensation
Temperature: 10°C∼ 40°C
Atmosphere Pressure: 700∼1060hPa
Strong radiation sources or powerful electromagnetic waves (e.g. electromagnetic
waves from radio broadcasting) may result in image ghosting or noise. The system
should be isolated from such radiation sources or electromagnetic waves.
P/N: 4701-0061-01B
1-9