CT and PET: early prognostic indicators of response to imatinib mesylate in patients with gastrointestinal stromal tumor...
Published in American Journal of Roentgenology
Optimal whole-body PET scanner configurations for different volumes of LSO scintillator: a simulation study.
Published in Physics in Medicine and Biology
The axial field of view (AFOV) of the current generation of clinical whole-body PET scanners range from 15-22 cm, which limits sensitivity and renders applications such as whole-body dynamic imaging or imaging of very low activities in whole-body cellular tracking studies, almost impossible. Generally, extending the AFOV significantly increases the...
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...
Pretransplant detection of anti-endothelial cell antibodies could predict renal allograft outcome.
Published in Experimental and Clinical Transplantation
Regularization design in penalized maximum-likelihood image reconstruction for lesion detection in 3D PET.
Published in Physics in Medicine and Biology
Detecting cancerous lesions is a major clinical application in emission tomography. In previous work, we have studied penalized maximum-likelihood (PML) image reconstruction for the detection task and proposed a method to design a shift-invariant quadratic penalty function to maximize detectability of a lesion at a known location in a two dimension...
An X-Ray computed tomography/positron emission tomography system designed specifically for breast imaging.
Published in Technology in Cancer Research & Treatment
Mammography has served the population of women who are at-risk for breast cancer well over the past 30 years. While mammography has undergone a number of changes as digital detector technology has advanced, other modalities such as computed tomography have experienced technological sophistication over this same time frame as well. The advent of lar...
Quantification with a dedicated breast PET/CT scanner.
Published in Medical Physics
Optimization of noise-equivalent count rates in 3D PET.
Published in Physics in Medicine and Biology
We have used noise-equivalent count (NEC) rates to optimize count rate performance for 3D acquisition in PET in a wide range of situations, with particular reference to imaging of the torso. We have also compared NEC performance for 2D and 3D acquisition in order to establish the conditions under which 3D mode offers an improvement over 2D mode. Me...
Epidemiology and outcome of Crohn s disease in a teaching hospital in Riyadh.
Published in World Journal of Gastroenterology
Non-rigid registration of serial dedicated breast CT, longitudinal dedicated breast CT and PET/CT images using the diffe...
Published in Physica Medica
