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Charles W. Stearns
Researcher at GE Healthcare
Publications - 112
Citations - 3057
Charles W. Stearns is an academic researcher from GE Healthcare. The author has contributed to research in topics: Iterative reconstruction & Imaging phantom. The author has an hindex of 25, co-authored 111 publications receiving 2970 citations. Previous affiliations of Charles W. Stearns include University of Washington & Harvard University.
Papers
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Journal Article
Performance characteristics of a whole-body PET scanner.
Timothy R. DeGrado,Timothy G. Turkington,J. J. Williams,Charles W. Stearns,John M. Hoffman,R E Coleman +5 more
TL;DR: The results show the performance of the newly designed whole-body PET scanner to be well suited for clinical and research applications.
Journal Article
PET Performance Measurements Using the NEMA NU 2-2001 Standard
Margaret E. Daube-Witherspoon,Joel S. Karp,Michael E. Casey,Frank P. DiFilippo,Horace H. Hines,Gerd Muehllehner,Vilim Simcic,Charles W. Stearns,L. E. Adam,S.G. Kohlmyer,Vesna Sossi +10 more
TL;DR: Revised measurements for spatial resolution, intrinsic scatter fraction, sensitivity, counting rate performance, and accuracy of count loss and randoms corrections are designed to allow testing of dedicated PET systems in both 2-dimensional and 3-dimensional modes as well as coincidence gamma cameras, conditions not considered in the original NU 2-1994 standard.
Journal ArticleDOI
Application and Evaluation of a Measured Spatially Variant System Model for PET Image Reconstruction
Adam M. Alessio,Charles W. Stearns,Shan Tong,Steven G. Ross,S.G. Kohlmyer,A. Ganin,Paul E. Kinahan +6 more
TL;DR: Improved resolution and contrast versus noise properties can be achieved with the proposed method with similar computation time as the conventional approach, and comparison of the measured spatially variant and invariant reconstruction revealed similar performance with conventional image metrics.
Journal Article
Performance Characteristics of a Newly Developed PET/CT Scanner Using NEMA Standards in 2D and 3D Modes
Osama Mawlawi,Donald A. Podoloff,S.G. Kohlmyer,John J. Williams,Charles W. Stearns,Randall F. Culp,Homer Macapinlac +6 more
TL;DR: The results show excellent system sensitivity with relatively uniform resolution throughout the FOV, making this scanner highly suitable for whole-body studies.
Journal ArticleDOI
Investigation of the performance of the General Electric Advance positron emission tomograph in 3D mode
TL;DR: Performance measurements of the General Electric Advance Positron Emission Tomograph operating with the septa retracted (3D mode) have been made and data collected included transaxial and axial resolution, uniformity, recovery coefficients, count rate performance, dead time accuracy, and effect of scatter correction.