Timing, Energy, and 3-D Spatial Resolution of the BING PET Detector Module.

Area of Science:

• Medical Imaging
• Nuclear Medicine
• Detector Physics

Background:

• Positron Emission Tomography (PET) systems require high-resolution detectors for improved diagnostic accuracy.
• Developing compact PET detectors is crucial for specialized applications like brain and breast imaging.

Purpose of the Study:

• To evaluate the 3D spatial, energy, and timing resolution of the novel Brain (or Breast)-Initiative Next-Generation (BING) PET detector.
• To assess the BING detector's suitability for small field-of-view PET applications.

Main Methods:

• The BING detector utilizes 1-mm-thick LYSO scintillator slats with offset silicon-photomultiplier (SiPM) arrays for interaction detection.
• 3D position was determined using maximum likelihood estimation within the identified slat of interaction (SOI).
• Timing resolution was measured using a modified first-optical-photon pickoff method.

Main Results:

• Effective tangential detector resolution was measured at 1 mm, with lateral (axial) resolution averaging 0.96 mm.
• Depth resolution averaged 1.6 mm, energy resolution was 13.6%, and coincidence timing resolution averaged 317 ps.
• Slats were accurately identified, demonstrating the detector's precise interaction localization.

Conclusions:

• The BING PET detector demonstrates high performance in spatial, energy, and timing resolution.
• These results indicate the BING detector's potential effectiveness for small field-of-view PET systems, particularly for brain and breast imaging.