Fully three-dimensional positron emission tomography is considered and a reconstruction
algorithm derived. The reconstruction problem is formulated mathematically as a three-…

Purpose: Current methods for estimating and reporting radiation dose from CT examinations
are largely patient‐generic; the body size and hence dose variation from patient to patient is …

Purpose: Radiation‐dose awareness and optimization in CT can greatly benefit from a dose‐reporting
system that provides dose and risk estimates specific to each patient and each CT …

Purpose To estimate patient-specific radiation dose and cancer risk for pediatric chest computed
tomography (CT) and to evaluate factors affecting dose and risk, including patient size, …

It is important to recognize that this paper does not represent an official standard endorsed
by NEMA, since that will requireapprovalofthe NEMA Codes and Stand ards committee of the …

Four algorithms are adapted to perform direct three-dimensional reconstruction from projections.
The algorithms considered are summation, the Algebraic Reconstruction Technique (…

Purpose: Volume quantifications of lung nodules with multidetector computed tomography (CT)
images provide useful information for monitoring nodule developments. The accuracy …

Objectives To investigate the impact of an adaptive statistical iterative reconstruction (ASiR)
algorithm on diagnostic accuracy and confidence for the diagnosis of hypervascular liver …

Current methods for organ and effective dose estimations in pediatric CT are largely patient
generic. Physical phantoms and computer models have only been developed for standard/…

Current estimation of lung nodule size typically relies on uni-or bi-dimensional techniques.
While new three-dimensional volume estimation techniques using MDCT have improved size …