Summary
This paper presents CdTe-DSD SPECT-I, a novel small-animal SPECT imaging system based on cadmium telluride double-sided strip detectors originally developed for space-based X-ray and gamma-ray observation. The system achieves approximately threefold improvement in energy resolution compared to conventional high-grade semiconductor SPECT systems, enabling simultaneous visualisation of multiple radioisotopes with minimal spectral contamination. The authors demonstrate through phantom and animal studies that this technology enables researchers to conduct multi-isotope molecular imaging studies with greater flexibility and reduced image artefacts.
UK applicability
This is a laboratory instrumentation development paper with limited direct applicability to UK agricultural or food systems research. However, the enhanced imaging capability could potentially support future biomedical and molecular research conducted at UK institutions.
Key measures
Energy resolution (1–2 keV FWHM at 10–100 keV; 1.6% FWHM at 140 keV), spatial resolution (≥0.35 mm), spectral crosstalk suppression, image noise reduction
Outcomes reported
The study reports development and validation of a novel small-animal SPECT imaging system (CdTe-DSD SPECT-I) with ultrahigh energy and spatial resolution. The system was evaluated through phantom imaging and animal experiments to assess its capability for simultaneous multi-isotope imaging without spectral crosstalk.
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