Mindray DC-T6, Operator'S Manual

Page: 269 / 347

Probes and Biopsy
13-33
13.2.6 iNeedle
In the course of biopsy, the metal needle attached to the probe is punctured into the tissue
with a certain angle; because of the needle acoustic impedance, the ultrasonic beam
cannot penetrate the metal needle, a reflecting boundary is formed. As in figure 1, if the
deflection angle is very large, the needle display is not clear.
In the condition of deflected ultrasonic transmission, the beam direction is perpendicular to
the needle direction, and the reflection direction will be the same with the needle, as
shown in figure 2, when the needle display in the ultrasound image is very clear. The
system provides an additional deflection transmission that is approximately perpendicular
to the metal needle, as the normal transmission (perpendicular to the transducer surface)
is contained as well. And the deflection angel can be chosen by users.
Figure 1 Figure 2
To enter/exit iNeedle
„
To enter iNeedle
Click [iNeedle] item in B soft menu.
Or, you can assign a user-defined key for entering iNeedle.
„ Open iNeedle in Biopsy status
1. Perform scanning and locate the target, press <Biopsy> to enter the screen.
2. Click [iNeedle] to enter the status, available adjusting parameters are displayed on
the menu.
„ To exit iNeedle
Press the user-defined key or click [iNeedle] to exit the status and enter B mode.
Needle Steer
Description This function adjusts the biopsy needle angle via changing the steer angle
of the scan line. The iNeedle affecting region changes correspondingly.
Operation Adjust through the [Needle Steer] item on the menu.
B/iNeedle
Description This function is used to display B image and iNeedle image synchronously.
Operation Adjust through [B/iNeedle] on the menu.
Tips: iZoom (full-screen magnification) is available on iNeedle status.