Computational burden is a major concern when an iterative algorithm is used to reconstruct
a three-dimensional (3-D) image with attenuation, detector response, and scatter corrections…

An important part of the filtered backprojection (FBP) algorithm is the ramp filter. This paper
derives the discrete version of the ramp filter in the Fourier domain and studies the …

The Compton camera can collect SPECT data with high efficiency due to electronic collimation.
The data acquired from a Compton camera are projections of source activity along cones …

Echo‐planar imaging (EPI) is very sensitive to patient‐induced field inhomogeneity caused
by susceptibility changes between different anatomical regions. This results in geometric and …

… Suppose that our object has a support of a sphere [[x(l<R as shown in figure I, then the
required half-length a of the line-orbit is 2DR(D'-R2)-"2 by the data sufficiency condition. …

Purpose: In order to eventually develop an analytical algorithm with noise characteristics of
an iterative algorithm, this technical note develops a window function for the filtered …

It is observed that when the homogeneity property of the ramp filter is used to derive a
filtered backprojection algorithm in fan-beam tomography, the reconstructed images have …

Converging collimation increases the geometric efficiency for imaging small organs, such as
the heart, but also increases the difficulty of correcting for the physical effects of attenuation, …

Reconstruction artifacts in cone beam tomography are studied for filtered backprojection (Feldkamp)
and iterative EM algorithms. The filtered backprojection algorithm uses a voxel-…

Purpose People have been wandering for a long time whether a filtered backprojection (FBP)
algorithm is able to incorporate measurement noise in image reconstruction. The purpose …