Probabilistic approach to limited-data computed tomography reconstruction
نویسندگان
چکیده
منابع مشابه
Bayesian approach to limited-angle reconstruction in computed tomography
An arbitrary source function cannot be determined fully from projection data that are limited in number and range of viewing angle. There exists a null subspace in the Hilbert space of possible source functions about which the available projection measurements provide no information. The null-space components of deterministic solutions are usually zero, giving rise to unavoidable artifacts. It ...
متن کاملA Deep Learning Architecture for Limited-Angle Computed Tomography Reconstruction
Limited-angle computed tomography suffers from missing data in the projection domain, which results in intensity inhomogeneities and streaking artifacts in the image domain. We address both challenges by a two-step deep learning architecture: First, we learn compensation weights that account for the missing data in the projection domain and correct for intensity changes. Second, we formulate an...
متن کاملComputed tomography from limited data using a robust discrete algebraic reconstruction technique
Obtaining accurate reconstruction from a small number of projection images is of high importance in many tomography applications. Many advanced reconstruction techniques has been proposed in the past for limited data problems. Most of them achieve such goal by exploiting the prior information we have on the object under imaging. For example, it has been shown that if the object has rather spars...
متن کامل3-D computed tomography reconstruction: another tool to teach anatomy in the veterinary colleges
This letter underpins the use of three-dimensional computed tomography (3D-CT) reconstruction as an aid to teach veterinary anatomy. Cases were presented to students in order to observe normal and clinically abnormal patients. The images provided excellent details of relevant structures and could serve as a tool for teaching anatomy. Many sources describe different options to enhance anatomical...
متن کاملLimited-Angle Computed Tomography for Sandwich Structures using Data Fusion
Both conventional and limited-angle computed-tomography (CT) are ill-posed problems, but where conventional CT has a small null space with few dimensions, limitedangle CT has a much larger null space and is severely ill-posed. The nature of the illposedness of limited-angle CT dictates that any limited-angle reconstruction method must interpolate from partial data in the Fourier domain. Large a...
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: Inverse Problems
سال: 2019
ISSN: 0266-5611,1361-6420
DOI: 10.1088/1361-6420/ab2e2a