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fanbeam
"... Fast variance image predictions for quadratically regularized statistical image reconstruction in ..."
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Fast variance image predictions for quadratically regularized statistical image reconstruction in
A General Formula for FanBeam Lambda Tomography
 Article ID 10427
"... Lambda tomography (LT) is to reconstruct a gradientlike image of an object only from local projection data. It is potentially an important technology for medical Xray computed tomography (CT) at a reduced radiation dose. In this paper, we prove the first general formula for exact and efficient fan ..."
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Cited by 3 (2 self)
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Lambda tomography (LT) is to reconstruct a gradientlike image of an object only from local projection data. It is potentially an important technology for medical Xray computed tomography (CT) at a reduced radiation dose. In this paper, we prove the first general formula for exact and efficient
Numerical and theoretical explorations in helical and fanbeam tomography
"... Abstract. Katsevich’s inversion formula for helical tomography is explored in the limit of vanishing pitch, yielding a general reconstruction formula for fanbeam tomography. The relationship of this formula to other formulas in the literature is explored and a rigorous proof of a rebinning formula ..."
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Abstract. Katsevich’s inversion formula for helical tomography is explored in the limit of vanishing pitch, yielding a general reconstruction formula for fanbeam tomography. The relationship of this formula to other formulas in the literature is explored and a rigorous proof of a rebinning formula
native fanbeam tomographic reconstruction
 In Proc. 1st IEEE Int. Symp. Biomedical Imaging, ISBI2002
, 2002
"... We present a new fast backprojection algorithm for CT fanbeam reconstruction. The new algorithm operates directly on fanbeam data without prior rebinning to parallelbeam projections. The algorithm reduces the computational complexity from for the traditional fanbeam algorithm to ffflfiffi . ..."
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Cited by 1 (1 self)
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We present a new fast backprojection algorithm for CT fanbeam reconstruction. The new algorithm operates directly on fanbeam data without prior rebinning to parallelbeam projections. The algorithm reduces the computational complexity from for the traditional fanbeam algorithm to ffflfiffi
Fanbeam Tomography Iterative Algorithm Based on Fourier Transform
 In Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
, 2008
"... Fanbeam tomography iterative algorithm based ..."
Fast Predictions of Variance Images for FanBeam Transmission Tomography With Quadratic
"... Abstract—Accurate predictions of image variances can be useful for reconstruction algorithm analysis and for the design of regularization methods. Computing the predicted variance at every pixel using matrixbased approximations [1] is impractical. Even most recently adopted methods that are based ..."
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putationally practical even for the data sizes in Xray computed tomography (CT). Simulation results show that it gives accurate predictions of the variance maps. The parallelbeam geometry is a simple special case of the fanbeam analysis. The analysis is also applicable to 2D positron emission tomography (PET). Index
Development of a Fanbeam Optical Computed Tomography Scanner for ThreeDimensional Dosimetry
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Reconstruction of binary matrices from fanbeam projections
, 2005
"... The problem of the reconstruction of binary matrices from their fanbeam projections is investigated here. A fanbeam projection model is implemented and afterwards employed in systematic experiments to determine the optimal parameter values for a data acquisition and reconstruction algorithm. The f ..."
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The problem of the reconstruction of binary matrices from their fanbeam projections is investigated here. A fanbeam projection model is implemented and afterwards employed in systematic experiments to determine the optimal parameter values for a data acquisition and reconstruction algorithm
Ultrasonic imaging in air using fanbeam tomography and electrostatic transducers
"... Aircoupled ultrasonic capacitance transducers operating at frequencies of up to 1 MHz have been employed in a fanbeam configuration for the crosssectional tomographic imaging of temperature fields and flow fields in air, and the location of solid objects. Separate transmitter and receiver transdu ..."
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Aircoupled ultrasonic capacitance transducers operating at frequencies of up to 1 MHz have been employed in a fanbeam configuration for the crosssectional tomographic imaging of temperature fields and flow fields in air, and the location of solid objects. Separate transmitter and receiver
PILINE BASED FANBEAM LAMBDA IMAGING WITHOUT SINGULARITIES
"... Since the ionizing radiation may induce cancers and genetic damages in the patient, it is highly desirable to minimize the Xray dose during a CT scan. As one of the local imaging techniques, the Lambda imaging reduces the Xray dose and imaging time. But the existence of the singular values results ..."
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Since the ionizing radiation may induce cancers and genetic damages in the patient, it is highly desirable to minimize the Xray dose during a CT scan. As one of the local imaging techniques, the Lambda imaging reduces the Xray dose and imaging time. But the existence of the singular values
Results 1  10
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