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New detector to cut costs, boost quality in nuclear medicine

9 hours ago
https://www.nature.com/articles/s41467-025-63400-7
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  • #Gamma-ray detection
  • #Perovskite semiconductors
  • #Nuclear medicine imaging
  • Perovskite semiconductors, specifically CsPbBr3, are developed for high-resolution γ-ray imaging in nuclear medicine.
  • The detectors achieve record energy resolutions: 2.5% at 141 keV and 1.0% at 662 keV.
  • Chemical-mechanical surface processing improves charge collection efficiency (CCE) to near-unity, enhancing performance uniformity and stability.
  • Pixelated configuration and depth-correction algorithms enable superior spatial resolution (3.2 mm) and sensitivity (0.13–0.21% cps/Bq).
  • The technology demonstrates clear imaging of 99mTc γ-ray sources and phantom structures, validating its potential for clinical SPECT applications.
  • Long-term stability and low leakage currents (0.3–2 nA) ensure reliable operation in medical imaging systems.
  • The study highlights perovskite semiconductors as a cost-effective alternative to traditional CdZnTe (CZT) detectors.
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