Samsung SONOACE R3 Bedienungsanleitung PDF herunterladen (Seite 33)

Chapter 1 Safety

1-15

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 powerlines 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 System 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 source of interference are medical device,

information technology products, and radio and television transmission towers. Tracing the source of

radiated interference can be a dicult task. Customers should consider the following in an attempt to

locate the source:

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