Samsung SONOACE R5 Manual do Utilizador descarregar pdf (Página 31)

1-15

Chapter 1 Safety

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.

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

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

devices, commercial radio and TV, and so on.

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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