Occupational Exposure in Nuclear Medicine and PET.

Area of Science:

• Nuclear Medicine
• Radiology
• Oncology

Background:

• The increasing use of 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) in oncology necessitates evaluating its impact on staff radiation exposure.
• Conventional nuclear medicine procedures provide a baseline for comparison.

Purpose of the Study:

• To assess the occupational radiation hazard associated with FDG-PET scans in oncology.
• To compare radiation doses from PET scans with those from conventional nuclear medicine procedures.

Main Methods:

• A radiation dose survey was conducted using a hand-held radiation monitor (Victoreen 450-P).
• Measurements were taken at various distances and times simulating typical patient contact scenarios in a Diagnostic Imaging Department.
• Procedures included FDG-PET, gallium-67, thallium-201, bone scans, and sestamibi cardiac scans.

Main Results:

• Findings indicate that emerging oncologic techniques, including PET, high-dose gallium-67, and high-dose thallium-201, do not pose a significantly greater occupational radiation hazard.
• Radiation exposure levels were comparable to those from conventional nuclear medicine procedures.

Conclusions:

• FDG-PET and other advanced nuclear medicine techniques in oncology can be implemented without substantially increasing staff radiation exposure.
• Occupational safety protocols are effective in managing radiation risks in diagnostic imaging departments.