Abstract
Suitably designed optical fibers are shown to offer a powerful tool for functional brain mapping, facilitating the detection of Cherenkov radiation generated by relativistic positrons from positron-emitting radionuclides. Fiber probes support a low-loss delivery of the high-intensity short-wavelength part of the Cherenkov spectrum, which is strongly absorbed by biotissues, and lower the threshold positron energy ε required for Cherenkov radiation relative to ε values typical of biotissues, thus enhancing the conversion of positron energy into Cherenkov radiation.
- Received 19 April 2011
DOI:https://doi.org/10.1103/PhysRevE.84.061902
©2011 American Physical Society