Radiation exposure from gallium-67-citrate patients

Area of Science:

• Nuclear Medicine
• Radiopharmacology
• Radiation Safety

Background:

• Gallium-67 citrate (67Ga-citrate) is used in diagnostic imaging, particularly for lymphoma.
• Assessing radiation exposure from patients to healthcare personnel and family is crucial for safety protocols.

Purpose of the Study:

• To determine the radiation exposure levels for individuals in proximity to patients administered with 67Ga-citrate.
• To estimate radiation doses for radiology and nursing staff during patient care and imaging procedures.

Main Methods:

• Serial radiation monitoring of 15 adult patients post-injection of 67Ga-citrate.
• Dose rate measurements at various distances and projections using a calibrated ion chamber.
• Analysis of contact times for routine nursing and radiology tasks.

Main Results:

• Mean instantaneous exposures were determined for a standard administered activity of 370 MBq (10 mCi) 67Ga-citrate.
• Maximum patient contact time within 30.5 cm was found to be 30 minutes during routine procedures.

Conclusions:

• Quantified radiation exposure scenarios indicate no special precautions are needed for medical personnel during routine tasks with 67Ga-citrate patients.
• Radiation safety protocols for 67Ga-citrate administration can be maintained with standard practices.