Maximum Permissible Dose (Mpd); Radiation Protection - GE Definium 5000 Operator's Manual

WARNING: Should any interference (EMC) be detected with other equipment, please position other
equipment away from this one.

Maximum Permissible Dose (MPD)

Before operation, persons qualified and authorized to operate this equipment should be familiar with the
Recommendations of the International Commission on Radiological Protection, contained in Annals
Number 60 of the ICRP, with applicable National Standards, and should have been trained in use of the
equipment.
WARNING: The operator shall use focal spot to skin distances as large as possible in order to keep the
absorbed dose to the patient as low as reasonably achievable.

Radiation Protection

Because exposure to X-ray radiation may be damaging to health, use great care to provide protection
against exposure to the primary beam. Some of the effects of X-ray radiation are cumulative and may
extend over a period of months or years. The best safety rule for X-ray operator is "Avoid exposure to the
primary beam at all times".
Any object in the path of the primary beam produces secondary (scattered) radiation. The intensity of the
secondary radiation is dependent upon the energy and intensity of the primary beam and the atomic
number for the object material struck by the primary beam. Secondary radiation may be of greater
intensity than that of the radiation reaching the film. Take protective measures to safeguard against it.
An effective protective measure is the use of lead shielding. To minimize dangerous exposure, use such
items as lead screens, lead impregnated gloves, aprons, thyroid collars, etc. The lead screen should
contain a minimum of 2.0 mm of lead or equivalent and personal protective devices (aprons, gloves, etc.)
must contain a minimum of 0.25 mm of lead or equivalent. For confirmation of the local requirements at
your site, please refer to your "Local Radiation Protection Rules" as provided by your Radiation Protection
Advisor.
WARNING: While operating or servicing x-ray equipment, always keep a distance not less than 2
meters from the focal spot and X-ray beam, protect body and do not expose hands, wrists,
arms or other parts of the body to the primary beam.
Definium 5000 X-Ray System
Operator Manual
5197809-1EN Rev. 4 (13 February 2008)
© 2008 General Electric Company. All rights reserved.
Chapter 2: Safety and Regulatory
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