Badawi Lab - UC Davis

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Crystal identification in positron emission tomography using nonrigid registration to a Fourier-based template.

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...

Excitation spectroscopy in multispectral optical fluorescence tomography: methodology, feasibility and computer simulati...

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...

Characterization of a high-resolution hybrid DOI detector for a dedicated breast PET/CT scanner.

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...

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