Cerenkov Luminescence Imaging in Biomedical Applications

Cerenkov luminescence imaging (CLI) exploits the faint optical emission produced when charged particles surpass the phase velocity of light in biological tissue. By capturing this blue-shifted light with sensitive cameras and optimised optical systems, CLI bridges nuclear and optical modalities to reveal the in vivo distribution of radiopharmaceuticals. Over the past decade, innovations in detector sensitivity, spectral filtering and computational reconstruction have extended CLI from planar surface imaging into three-dimensional tomographic studies and endoscopic applications. The integration of nanoparticle reporters and energy-transfer schemes has elevated signal-to-background ratios and enabled activatable probes that respond to enzymatic activity or local pH. Although inherent tissue attenuation limits CLI to superficial or small-animal models, multimodal combinations with PET, MRI and ultrasound further enhance depth penetration and quantitative accuracy. Emerging proof-of-concept clinical trials in image-guided surgery and lymph node mapping underscore the translational promise of this low-cost, high-throughput molecular imaging approach.

Research from Nature Portfolio

Recent studies have advanced CLI through engineered nanomaterials that convert weak Cerenkov outputs into robust fluorescent signals. One approach utilises europium-doped oxide nanoparticles to harvest γ- and Cerenkov emissions, yielding strong, narrowband light with high tissue penetration and excellent contrast for tumour detection at low radiotracer doses. Another investigation has co-localised radiolabelled glucose analogues and photoactive drug nanomicelles, using the intrinsic Cerenkov output of the isotope to trigger local phototherapy. This strategy demonstrated precise ablation of disseminated tumour cells in bone marrow and metastatic models, tracked concurrently by optical and nuclear imaging, and highlighted opportunities for spatiotemporally controlled theranostic interventions.

Cerenkov Luminescence Imaging in Biomedical Applications publication trend

The graph below shows the total number of articles in cerenkov luminescence imaging in biomedical applications across all publications each year (not limited to Nature Index journals).

Technical terms

Cerenkov radiation: Optical emission produced when charged particles travel faster than the phase velocity of light in a dielectric medium.

Cerenkov luminescence imaging (CLI): Molecular imaging modality that detects Cerenkov radiation from radioactive tracers using optical cameras.

Radiopharmaceutical: Radioisotope-labelled compound administered for diagnostic imaging or therapeutic purposes in vivo.

Energy transfer: Mechanism by which Cerenkov or γ-ray emissions excite nanoparticles or fluorophores to emit at longer, tissue-penetrant wavelengths.

Tomography: Reconstruction technique that generates cross-sectional or volumetric images from multiple projection measurements.

References

1. Cerenkov luminescence imaging: physics principles and potential applications in biomedical sciences. EJNMMI Physics (2017).
2. In vivo nanoparticle-mediated radiopharmaceutical-excited fluorescence molecular imaging. Nature Communications (2015).
3. Experimental Cerenkov luminescence tomography of the mouse model with SPECT imaging validation. Optics Express (2010).
4. Cerenkov luminescence imaging (CLI) for image-guided cancer surgery. Clinical and Translational Imaging (2016).
5. Review of biomedical Čerenkov luminescence imaging applications. Biomedical Optics Express (2015).
6. Quantitative Modeling of Cerenkov Light Production Efficiency from Medical Radionuclides. PLOS ONE (2012).
7. Radionuclides transform chemotherapeutics into phototherapeutics for precise treatment of disseminated cancer. Nature Communications (2018).
8. Multispectral Cerenkov luminescence tomography for small animal optical imaging. Optics Express (2011).
9. Non-Negative Iterative Convex Refinement Approach for Accurate and Robust Reconstruction in Cerenkov Luminescence Tomography. IEEE Transactions on Medical Imaging (2020).