Towards continuous-to-continuous 3D imaging in the real world

Imaging systems are often modeled as continuous-to-discrete mappings that map the object (i.e. a function of continuous variables such as space, time, energy, wavelength, etc) to a finite set of measurements. When it comes to reconstruction, some discretized version of the object is almost always as...

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Bibliographic Details
Published inPhysics in medicine & biology Vol. 64; no. 18; p. 185007
Main Authors Caucci, L, Liu, Z, Jha, A K, Han, H, Furenlid, L R, Barrett, H H
Format Journal Article
LanguageEnglish
Published England IOP Publishing 18.09.2019
Subjects
Algorithms
emission tomography
GPU
graphics processing units
Imaging, Three-Dimensional - methods
MLEM
Phantoms, Imaging
reconstruction
SPECT
Tomography, Emission-Computed, Single-Photon
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Summary:Imaging systems are often modeled as continuous-to-discrete mappings that map the object (i.e. a function of continuous variables such as space, time, energy, wavelength, etc) to a finite set of measurements. When it comes to reconstruction, some discretized version of the object is almost always assumed, leading to a discrete-to-discrete representation of the imaging system. In this paper, we discuss a method for single-photon emission computed tomography (SPECT) imaging that avoids discrete representations of the object or the imaging system, thus allowing reconstruction on an arbitrarily fine set of points.
Bibliography:PMB-108382.R2
Institute of Physics and Engineering in Medicine
ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0031-9155
1361-6560
1361-6560
DOI:10.1088/1361-6560/ab3fb5