Environment; Safety; Rfi Considerations; Emi Considerations - Philips CARDIOMD Service Manual

Installation Requirements
8.1.7

Environment

8.1.7.1

RFI Considerations

Hospitals' surrounding conditions, internal and external to building structures, may cause radio
frequency interference. These problems are sometimes derived from high wattage transmitters
such as: TV station, radio station, or other nearby transmitters.
Many RFI problems are difficult to define and may require an analysis from an outside specialist
or consultant in this field, hired by the customer.
8.1.7.2

EMI Considerations

The main power lines of the system should be dedicated lines directly from the nearest hospital
main distribution transformer. It is advised that no other electrical equipment be connected to
these power lines now or in the future.
HV transformer equipment, electric meters, and other electro-magnetic devices may cause
interference to the microprocessor and computer equipment and should not be located adjacent to
the camera room.
8.1.7.3

Gamma Events

The camera detects gamma events from a radioactive source and measures their intensity. Hospital
physicists must consider this when a hot lab or patient waiting area is located adjacent to a camera
room. Consideration must also be given to new equipment layout with respect to current gamma
cameras.
Note. The CardioMD system is designed for low energy imaging and the detector is shielded
accordingly for up to 170 keV only.
8.1.7.4

Magnetic Fields

The camera is adversely affected by magnetic fields produced by MRI equipment, transformers,
etc. The camera must not be located within a field > 0.5 gauss. Distance will depend on magnet
field strength, shielding and technology being applied.
8.1.8

Safety

It is suggested that oxygen and suction services be provided in the examination room convenient
for the gantry. These services may be of portable or permanent type.
Fire protection for the type of equipment and systems specified shall be provided in accordance
with local codes.
8-12 CardioMD Service Manual
1MAN0158-H11 04-2005 CSIP Level 1