Samsung SONOACE R7 Manual do Utilizador descarregar pdf (Página 32)

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Operation Manual

 Avoiding ElectroMagnetic Interference

Typical interference on Ultrasound Imaging Systems varies depending on Electromagnetic phenomena.

Please refer to following table:

Imaging Mode ESD

Power Line

2D or 3D

Change of operating

mode, system

settings, or system

reset.

Brief ashes in

the displayed or

recorded image.

For sector imaging probes, white

radial bands or ashes in the

centerlines of the image.

For linear imaging probes, white

vertical bands, sometimes more

pronounced on the sides of the

image.

White dots, dashes, diagonal

lines, or diagonal lines near

the center of the image.

Increase in the image

background noise or white M

mode lines.

White dots, dashes, diagonal

lines, or increase in image

background noise

Color

Color ashes, radial or vertical

bands, increase in background

noise, or changes in color image.

Color ashes, dots, dashes,

or changes in the color noise

level.

Doppler

Horizontal lines in the spectral

display or tones, abnormal noise

in the audio, or both.

Vertical lines in the spectral

display, popping type noise

in the audio, or both.

1. ESD caused by discharging of electric charge build-up on insulated surfaces or persons.

2. RF energy from RF transmitting equipment such as portable phones, hand-held radios, wireless devices,

commercial radio and TV, and so on.

3. Conducted interference on power lines or connected cables caused by other equipment, such as switching

power supplies, electrical controls, and natural phenomena such as lightning.

A medical device can either generate or receive electromagnetic interference. The EMC standards describe

tests for both emitted and received interference.

Samsung Medison Ultrasound Systems do not generate interference in excess of the referenced standards.

An Ultrasound System is designed to receive signals at radio frequency and is therefore susceptible to

interference generated by RF energy sources. Examples of other sources of interference are medical devices,

information technology products, and radio and television transmission towers. Due to the diculties in

nding sources of interference, refer to the following when searching for them.

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