Titlebook: Information Processing in Medical Imaging; 12th International C Alan C. F. Colchester,David J. Hawkes Conference proceedings 1991 Springer-

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套索

W Snyder,A Logenthiran,P Santago,K Link,G Bilbro,S Rajalans taken at national and international levels which transformed erudite speculations and assessments into an agreement to prohibit nuclear tests and inhibit or ‘control’ the nuclear arms race.. Equally, however widespread and publicised thess movement of protest might have been, that protest availed

殘廢的火焰

Surgical probe design for a coincidence imaging system without a collimator,xternal gamma cameras. Tomography with handheld probes is not possible, however, so it is difficult to determine whether an increase in the photon count rate is caused by features near the probe or by variations in the distant background radiation. Our group has experimented with several probe desig

乞討

Voxel based Monte Carlo calculations of nuclear medicine images and applied variance reduction techvolume arrays. Such a volume based software phantom delineates internal human organs with millimeter resolution and lends itself to fully 3-dimensional Monte Carlo simulations. Our simulation models 45 internal human organs (each with an associated radioisotope concentration and attenuation coeffici

痛苦一生

SPECT scatter correction in non-homogeneous media,vity estimates depends to a large extent on the accuracy of the attenuation and scatter corrections performed. This is particularly so in the thorax, where assumptions about regular object shape and constant density are inappropriate. We have developed a method of scatter correction based on convolu

Outspoken

Cone beam single photon emission computed tomography using two orbits,reconstruction. It is also known that two such orbits, oriented orthogonally, do satisfy the condition. In this paper, we present a fast convolution-and-backprojection algorithm to perform reconstructions from two orbits of cone-beam data. The algorithm has been applied to simulated data, and phanto

禮節(jié)

Spline-based regularisation for discrete FBP reconstruction,the case of angular sampling. Usually these two types of degradations are not studied separately. However, discretisation can be performed properly, while the null space is irreducible. For this reason, we study the relationships between continuous and discrete versions of a direct reconstruction me

impale

Reconstruction of 3-D branching structures,ormations and an assumption of structural connectivity, we describe how to elucidate the imaged structure from the multitude of artifacts resulting from all possible triangulations. The method involves generating two or more intermediate reconstructions from different pairs of projections, then comp

轉(zhuǎn)換

Preliminary examination of the use of case specific medical information as "prior" in Bayesian recoy. The question is: Can prior information on some areas of an imaging field improve the results of a reconstruction in other areas of the same image? We answer the question for the specific case of a simple image with a large square of activity surrounding a smaller square, with different ratios of

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