GE Discovery NM/CT 670 - Background Radiation

Special Construction Requirements 3.1 Radiation Protection and Shielding Requirements
3.1.1 Background Radiation
Discovery NM/CT 670 – Standard Integration Instructions
5483063-1EN, Rev.2, ©2015 GE Healthcare 3-2
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.