Aj, Chaudhari Aa, Joshi Sl, Bowen Rm, Leahy Sr, Cherry Rd, Badawi
Published in
Physics in Medicine and Biology
Modern positron emission tomography (PET) detectors are typically made from 2D modular arrays of scintillation crystals. Their characteristic flood field response (or flood histogram) must be segmented in order to correctly determine the crystal of annihilation photon interaction in the system. Crystal identification information thus generated is a...
Aj, Chaudhari S, Ahn R, Levenson Rd, Badawi Sr, Cherry Rm, Leahy
Published in
Physics in Medicine and Biology
Molecular probes used for in vivo optical fluorescence tomography (OFT) studies in small animals are typically chosen such that their emission spectra lie in the 680-850 nm wavelength range. This is because tissue attenuation in this spectral band is relatively low, allowing optical photons even from deep sites in tissue to reach the animal surface...
Chaudhari, Abhijit J Leahy, Richard M Wise, Barton L Lane, Nancy E Badawi, Ramsey D Joshi, Anand A
Published in
Physics in medicine and biology
We present a method based on spectral theory for the shape analysis of carpal bones of the human wrist. We represent the cortical surface of the carpal bone in a coordinate system based on the eigensystem of the two-dimensional Helmholtz equation. We employ a metric--global point signature (GPS)--that exploits the scale and isometric invariance of ...
Godinez, Felipe Chaudhari, Abhijit J Yang, Yongfeng Farrell, Richard Badawi, Ramsey D
Published in
Physics in medicine and biology
The aim of this study is to design and test a new high-resolution hybrid depth of interaction (DOI) detector for a dedicated breast PET/CT scanner. Two detectors have been designed and built. The completed detectors are based on a 14 × 14 array of 1.5 × 1.5 × 20 mm(3) unpolished lutetium orthosilicate scintillation crystals, with each element coate...
