16 Probes and Biopsy
Operator’s Manual
16 - 55
16.4.3 Preparation Before Needle Guidance
NOTE:
Before and during calibration, keep the probe away from the magnetic sources, such as metal
objects, electrical motors, switching power supplies, nerve stimulators and similar medical devices.
Perform the following procedure:
1.
Scan the target tissue and adjust the image parameters.
2.
Check the field strength to ensure that the filed strength indicator is
. If the filed strength is
low, hold the probe and tap [Calibrate] on “eS.Navi Needle” menu. Do not move the probe
during the calibration.
3.
Magnetize a needle cap.
a.
Place an appropriate sterile needle cap (length: 3.5cm to 4.5cm, diameter < 7 mm, with
bottom closed) into the magnetizer.
b.
Introduce a needle into the cap, and ensure that the needle tip contacts the bottom of the
needle cap.
If the needle cap associated with the needle does not meet the requirements, you are
recommended to use BBraunSterican <35 mm needles cap or B&D Microlance <35 mm
needles cap.
Indicator Colors
Description
Green
Low magnetic interference: appropriate for needle guidance.
Yellow
Medium magnetic interference: be cautious for needle guidance.
Red
High magnetic interference: do not perform needle guidance.
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