Output Display - SonoSite 180PLUS Guide D'utilisation

Table 3: TI (TIS, TIC, TIB)
Transducer
C8
C11
C15
C60
HST
ICT
L25
L38

Output Display

This section replaces the Output Display section in the SonoSite Ultrasound System User Guide.
The system meets the output display standard for TI. A continuous real-time display of TI is provided
for the operator whenever a transducer is operated in a CPD, Color, M Mode, or PW Doppler imaging
mode. The index is displayed in increments of 0.1.
The thermal index consists of three user selectable indices, and only one of these is displayed at any
one time. In order to display properly and meet the ALARA principle, the user selects an appropriate
TI based on the specific exam being performed. SonoSite provides the AIUM Medical Ultrasound
Safety reference which contains guidance on how to determine which TI is appropriate (see second
reference listed in
Thermal Indices Output Display Accuracy
The accuracy result for the thermal index (TI) is stated statistically. With 90% confidence, 90% of the
measured TI values will be within +26% to –50% of the displayed TI value, or +0.2 of the displayed
value, whichever value is larger. The values equate to +1dB to –3dB.
A displayed value of 0.0 for TI means that the calculated estimate for the index is less than 0.05.
Color Power Doppler Settings
Box Box Box
Width Height Depth
"Related Guidance Documents" on page
Opti-
PRF Depth
mize
↓
↓
↓
8).
PW Settings
↓ (PRF)
↑ (Depth)
↑ (Depth)
↑ (Depth)
↓ (PRF)
↓ (PRF)
↓ (Depth)
Chapter 2: Safety 7