B-K Medical Pro Focus 2202, User Manual

Page: 138 / 356

138 Chapter 9
Adjusting the Thermal Index Limit
Before you use Color mode, check that the TI settings are appropriate. The current
TI tissue type and limit are displayed just under the B-K Medical logo in the upper
left corner of the screen.
The absolute TI limit for each tissue type is set by the factory to conform to FDA
standards (see “Acoustic Output” on page 26), but you may want to set a lower TI
limit for some purposes. There are 2 types of settings you can vary:
•
Tissue type (TIS – soft tissue, TIC – cranial, TIB – bone)
•
TI limit (not exceeding the factory-set limits)
To select tissue type:
•
Click the TI type displayed and select TIB, TIC or TIS (or point at TI and press
[
+/-
]
).
To adjust the TI limit:
•
Click the limit displayed after the TI type and select the value you want.
The current TI is displayed as TIx:z.z<y.y, where x is S, C, or B; y.y is the limit
you select; and z.z is the actual TI.
Adjusting MI
You can adjust the maximum allowed MI (mechanical index).
To adjust the MI limit:
•
Click MI above General on the left side of the screen and drag the slider.
Turning Color Mode On or Off
When you turn on Color mode, B-mode must be scanning.
To turn on Color mode:
•
Press
[
Color
]
.
The color box appears.