Development of an omnidirectional rotating Compton camera for imaging 177Lu radioactive contamination

Area of Science:

• Nuclear Medicine
• Radiation Detection
• Medical Imaging

Background:

• 177Lu-oxodotreotide is a novel radiopharmaceutical gaining attention in nuclear medicine.
• Accurate detection of low-level radioactive contamination is crucial for safety in nuclear medicine facilities.

Purpose of the Study:

• To develop an omnidirectional rotating Compton camera for imaging low-level radioactive contamination.
• To create a reliable environmental monitoring tool for nuclear medicine facilities.

Main Methods:

• Developed a compact Compton camera with six scintillator crystals on a motorized rotating stage.
• Optimized crystal type, size, and spacing for adaptability to various environmental conditions.
• Utilized Geant4 Monte Carlo simulations to optimize detector configuration.

Main Results:

• A prototype detector using 3.5 cm cubic crystals was successfully developed.
• The camera visualized an unsealed 177Lu-oxodotreotide source with high sensitivity.
• The detector was unaffected by gamma rays from 99Tc, common in nuclear medicine.

Conclusions:

• The developed rotating Compton camera is a reliable tool for environmental monitoring in nuclear medicine.
• The technology enables rapid detection of radioactive contamination, reducing exposure risks.
• This advancement supports enhanced safety protocols for medical professionals and the public.