Badawi Lab - UC Davis
  • Upload

  • Log in

  • Sign up

Search on MyScienceWork
1 News 68 Publications 10 Members

Evaluation of myocardial perfusion using positron emission tomography in infants following a neonatal arterial switch op...

Yates, Rw Marsden, Pk Ramsey D. Badawi Cronin, Bf Anderson, Dr Tynan, Mj Maisey, Mn Baker, Ej

Published in Pediatric Cardiology

This study was performed to examine the use of positron emission tomography (PET) as a method of evaluating myocardial perfusion after the arterial switch operation for correction of transposition of the great arteries. Eleven asymptomatic patients (median age 2.3 years, range 1.3-4.3 years) post successful neonatal arterial switch repair for trans...

Ancient schwannoma masquerading as a thyroid mass.

Ramsey D. Badawi Scott-Coombes, D

Published in European Journal of Surgical Oncology

Schwannomas are benign, encapsulated nerve sheath cell neoplasms. Cervical sympathetic chain (CSC) schwannomas are rare, with less than 50 cited cases in the literature. CSC schwannomas may mimic a number of parapharyngeal masses. We report a rare variant, "ancient" schwannoma, which presented cytologically and radiologically as a thyroid mass. Thi...

Developments in component-based normalization for 3D PET.

Ramsey D. Badawi Marsden, Pk

Published in Physics in Medicine and Biology

Normalization in positron emission tomography (PET) is the process of ensuring that all lines of response joining detectors in coincidence have the same effective sensitivity. In three-dimensional (3D) PET, normalization is complicated by the presence of a large proportion of scattered coincidences, and by the fact that cameras operating in 3D mode...

Comparison of two-dimensional and three-dimensional iterative watershed segmentation methods in hepatic tumor volumetric...

Ray, S Rosalie Hagge Gillen, M Cerejo, M Shakeri, S Beckett, L Greasby, T Ramsey D. Badawi

Published in Medical Physics

In this work the authors compare the accuracy of two-dimensional (2D) and three-dimensional (3D) implementations of a computer-aided image segmentation method to that of physician observers (using manual outlining) for volume measurements of liver tumors visualized with diagnostic contrast-enhanced and PET/CT-based non-contrast-enhanced (PET-CT) CT...

Prevention of systolic anterior motion after mitral valve repair with an anterior leaflet valvuloplasty.

Quigley, Rl Garcia, Fc Ramsey D. Badawi

Published in The Journal of heart valve disease

Quantitative Accuracy of Penalized-Likelihood Reconstruction for ROI Activity Estimation.

Qi, J Fu, L Stickel, Jr Ramsey D. Badawi

Published in IEEE Transactions on Nuclear Science

Estimation of the tracer uptake in a region of interest (ROI) is an important task in emission tomography. ROI quantification is essential for measuring clinical factors such as tumor activity, growth rate, and the efficacy of therapeutic interventions. Accuracy of ROI quantification is significantly affected by image reconstruction algorithms. In ...

Hypertrophic cardiomyopathy: a real risk factor for stroke.

Ramsey D. Badawi Seetharaman, S Birns, J

Published in Scottish Medical Journal

Hypertrophic cardiomyopathy is a common and complex heterogeneous cardiovascular entity. Its relationship to ischaemic stroke and atrial fibrillation is under-recognized and consequently, many patients who should be on oral anticoagulation for stroke prevention go untreated.

Dosimetry and adequacy of CT-based attenuation correction for pediatric PET: phantom study.

Fahey, Fh Palmer, Mr Strauss, Kj Zimmerman, Re Ramsey D. Badawi Treves, St

Published in Radiology

A clinical evaluation of the quantitative accuracy of simultaneous emission/transmission scanning in whole-body positron...

Lodge, Ma Ramsey D. Badawi Marsden, Pk

Published in European Journal of Nuclear Medicine

We present a clinical evaluation of the quantitative bias which is introduced during simultaneous emission/transmission (SET) acquisition for the application of whole-body positron emission tomography (PET) with fluorine-18 2-fluoro-2-deoxy-d-glucose. The quantitative accuracy of the SET technique was assessed by means of a clinical study involving...

Experimental procedure for the manufacture and calibration of polyacrylamide gel (PAG) for magnetic resonance imaging (M...

Burford, Rp Billingham, N Wagner, Gs Patval, S Ramsey D. Badawi Keevil, Sf Baldock, C

Published in Physics in Medicine and Biology

A simple methodology for the manufacture and calibration of polyacrylamide gel (PAG) for magnetic resonance imaging (MRI) radiation dosimetry is presented to enable individuals to undertake such work in a routine clinical environment. Samples of PAG were irradiated using a linear accelerator and imaged using a 0.5 T (22 MHz) Philips Gyroscan MRI sc...

  • ← Previous
  • 1
  • 2 (current)
  • 3
  • 4
  • 5
  • 6
  • Next →
Powered by Polaris
  • About the Lab
  • Our Research
  • FAQ