Troubleshooting image interference issues with the 9L-D probe

Release time:

2025-03-12 09:36

I. Malfunction Phenomenon

The GE Vivid E9 color ultrasound diagnostic instrument's 9L-D probe shows interference in color Doppler mode; other probes and imaging modes are normal.

II. Fault Analysis and Resolution

First, determine if it is a probe malfunction. Test the probe on another Vivid E9; it displays normally.

After eliminating the probe itself as the cause, the suspected cause is the usage environment. Moving the device to another ultrasound examination room and powering it on eliminates the malfunction. This confirms that the malfunction is caused by the device's usage environment and requires locating the interference source.

There are no large power-consuming devices around the examination room that could produce interference; the focus is on locating the interference source within the examination room.

Sequentially turning off all power-consuming devices in the examination room does not eliminate the malfunction. Sequentially disconnecting the power connections of the power-consuming devices in the examination room, when the report workstation host plug is removed from the power strip, the interference is reduced, suggesting that the interference source is in a certain aspect of the workstation's power connection.

Continuing to disconnect the workstation's power strip eliminates the interference. Repeated testing confirms that the image interference is caused by the power strip connected to the workstation. Replacing the power strip resolves the malfunction.

Ultrasound image interference problems are complex, and interference sources can be diverse. Interference caused by a power strip is relatively rare. Therefore, when encountering such malfunctions, consider all possibilities outside of the ultrasound device.

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