Variable step size methods for solving simultaneous algebraic reconstruction technique (SART)-type CBCT reconstructions
نویسندگان
چکیده
منابع مشابه
Variable step size methods for solving simultaneous algebraic reconstruction technique (SART)-type CBCT reconstructions
Compared to analytical reconstruction by Feldkamp-Davis-Kress (FDK), simultaneous algebraic reconstruction technique (SART) offers a higher degree of flexibility in input measurements and often produces superior quality images. Due to the iterative nature of the algorithm, however, SART requires intense computations which have prevented its use in clinical practice. In this paper, we developed ...
متن کاملSimultaneous algebraic reconstruction technique (SART): a superior implementation of the art algorithm.
In this paper we have discussed what appears to be a superior implementation of the Algebraic Reconstruction Technique (ART). The method is based on 1) simultaneous application of the error correction terms as computed by ART for all rays in a given projection; 2) longitudinal weighting of the correction terms back-distributed along the rays; and 3) using bilinear elements for discrete approxim...
متن کاملAdaptive algebraic reconstruction technique.
Algebraic reconstruction techniques (ART) are iterative procedures for reconstructing objects from their projections. It is proven that ART can be computationally efficient by carefully arranging the order in which the collected data are accessed during the reconstruction procedure and adaptively adjusting the relaxation parameters. In this paper, an adaptive algebraic reconstruction technique ...
متن کاملThree-dimensional reconstruction using an adaptive simultaneous algebraic reconstruction technique in electron tomography.
Three-dimensional (3D) reconstruction of electron tomography (ET) has emerged as an important technique in analyzing structures of complex biological samples. However most of existing reconstruction methods are not suitable for extremely noisy and incomplete data conditions. We present an adaptive simultaneous algebraic reconstruction technique (ASART) in which a modified multilevel access sche...
متن کاملBlock Algebraic Methods for 3D Image Reconstructions on GPUs
This report investigates the possibility of making effective three dimensional tomographic reconstructions on General Purpose Graphical Processing Units (GPGPU). Tomography is a technique to recreate the interior of an object, from measurements of absorbed energy from projections taken at different angles. When these calculations are done on a computer it is called Computed Tomography (CT). Thi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Oncotarget
سال: 2017
ISSN: 1949-2553
DOI: 10.18632/oncotarget.17385