Background Radiation - GE Discovery NM/CT 670 Instructions Manual

Special Construction Requirements

3.1.1 Background Radiation

When the system is calibrated, background radiation from surrounding areas may adversely affect
calibration. Therefore all radiation sources must be suitably shielded, including:
Waiting/Injection areas

Radionuclide storage and preparation area (sometimes known as "hot lab")

As a general guideline, if the anticipated background radiation in the Scan Room will be higher
than 0.1mR/h (1microGy/h), then lead shielding with sufficient thickness must be installed.
NOTE
In most cases, a 2 to 5 mm lead wall will sufficiently reduce background radiation levels. To optimize costs, it is
recommended that you consult with a specialist to determine the minimum lead thickness for the planned installation site.
Discovery NM/CT 670 – Standard Integration Instructions
5483063-1EN, Rev.2, ©2015 GE Healthcare
3.1 Radiation Protection and Shielding Requirements
3-2
3.1.1 Background Radiation