Probes and Biopsy 13-39
13.2.6 iNeedle (Needle Visualization Enhancement)
During a biopsy, the metal needle attached to the probe pierces the tissue at a certain angle. Due
to the needle's acoustic impedance, the ultrasonic beam cannot penetrate the metal needle and a
reflecting boundary is formed. As in Figure 1, if the deflection angle is very large, the needle
display is not clear.
In deflected ultrasound transmission, the beam direction is perpendicular to the needle direction
and the reflection direction is the same as the needle, as shown in Figure 2, meaning the needle
display in the ultrasound image is very clear. The system provides additional deflection
transmission that is approximately perpendicular to the metal needle when the normal transmission
(perpendicular to the transducer surface) is being processed. The deflection angle can be chosen
by the user.
iNeedle is an option.
Figure 1 Figure 2
To enter/exit iNeedle
To enter iNeedle
Touch the [iNeedle] item on the B page on the touch screen.
Or, assign a user-defined key for entering iNeedle.
Open iNeedle in Biopsy status
1. Perform scanning and locate the target, press <F11 Biopsy> to enter the screen.
2. Touch [iNeedle] to enter the status. Available adjusting parameters are displayed in the menu.
To exit iNeedle
Press the user-defined key or touch [iNeedle] to exit the status and enter B mode.
Premium angle display
The premium angle appears on the screen after entering iNeedle.
The appropriate angle is 30° as shown in the figure below.
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