Initial characterization of a dedicated breast PET/CT scanner during human imaging.
Published in Journal of Nuclear Medicine
Abhijit Chaudhari
Assistant Professor of Radiology
Institution:
Badawi Lab
Sacramento, CA, United States
https://www.mysciencework.com/profile/abhijit.chaudhari
Using global illumination in volume visualization of rheumatoid arthritis CT data.
Published in IEEE Computer Graphics and Applications
Proper lighting in rendering is essential for visualizing 3D objects, but most visualization software tools still employ simple lighting models. The advent of hardware-accelerated advanced lighting suggests that volume visualization can be truly usable for clinical work. Researchers studied how volume rendering incorporating global illumination imp...
Excitation spectroscopy in multispectral optical fluorescence tomography: methodology, feasibility and computer simulati...
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...
Crystal identification in positron emission tomography using nonrigid registration to a Fourier-based template.
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...
High-resolution (18)F-FDG PET with MRI for monitoring response to treatment in rheumatoid arthritis.
Published in European Journal of Nuclear Medicine
Non-rigid registration of serial dedicated breast CT, longitudinal dedicated breast CT and PET/CT images using the diffe...
Published in Physica Medica
Registration-based Bone Morphometry for Shape Analysis of the Bones of the Human Wrist.
Published in IEEE Transactions on Medical Imaging
Treatment planning and volumetric response assessment for Yttrium-90 radioembolization: semiautomated determination of l...
Published in CardioVascular and Interventional Radiology
High-resolution <sup>18</sup>F-FDG PET/CT for assessing disease activity in Rheumatoid and Psoriatic Arthritis: findings...
Published in British Journal of Radiology
Spatial distortion correction and crystal identification for MRI-compatible position-sensitive avalanche photodiode-base...
Published in IEEE Transactions on Nuclear Science
Position-sensitive avalanche photodiodes (PSAPDs) are gaining widespread acceptance in modern PET scanner designs, and owing to their relative insensitivity to magnetic fields, especially in those that are MRI-compatible. Flood histograms in PET scanners are used to determine the crystal of annihilation photon interaction and hence, for detector ch...
MORPHOMETRY FOR EARLY MONITORING OF TREATMENT RESPONSE IN RHEUMATOID ARTHRITIS.
New aggressive therapeutic options have recently become available to treat inflammatory arthritis (IA) and rheumatoid arthritis in particular. These treatments not only control joint destruction, they may also aid in new bone formation at sites of eroded bone. Separation of non-responders from responders to these treatments, is critical, and is kno...
Characterization of a high-resolution hybrid DOI detector for a dedicated breast PET/CT scanner.
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...
Global point signature for shape analysis of carpal bones.
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 ei...
