Papers Published

1. Tornai, M.P. and Hoffman, E.J. and Cherry, S.R., Effect of refraction index and light sharing on detector element identification for 2D detector modules in positron emission tomography, Nucl. Instrum. Methods Phys. Res. A, Accel. Spectrom. Detect. Assoc. Equip. (Netherlands), vol. 348 no. 2-3 (1), pp. 618 - 22 [0168-9002(94)90810-9] .
   (last updated on 2007/04/15)

   Abstract:
   Relationships among indices of refraction (n) of scintillation detectors, light sharing among discrete detector elements and accuracy of detector element identification in positron emission tomography (PET) 2D detector arrays were examined with theory and experiment. Mismatches between the index of refraction of scintillators and the glass of photomultipliers (PMT) were seen to lead to nonlinear relationships between crystal position and ratio (positioning) signals derived from PMTs. Insight is provided into the empirically derived use of light sharing among elements of the crystals in PET 2D array detectors to compensate for this nonlinear response

   Keywords:
   photomultipliers;radioisotope scanning and imaging;refractive index;scintillation counters;