Results 291 to 300 of about 2,551,121 (363)

X-ray computed tomography

open access: yesNature Reviews Methods Primers, 2021
Philip J Withers   +2 more
exaly   +4 more sources

TOMOGRAPHY

Dental Clinics of North America, 1993
Conventional tomography is used in dentistry to demonstrate objects lying in a plane of interest distinct from their surrounding anatomic structures. Through technique parameters, which generate the controlled blurring of structures above and below the plane of interest, anatomic structures are visualized without the superimposition noted on other ...
D K, Kassebaum, J D, McDowell
openaire   +2 more sources

Pseudolocal Tomography

SIAM Journal on Applied Mathematics, 1996
The authors propose a pseudolocal tomography concept. Let \(d > 0\) be fixed, they consider the following pseudolocal tomography formula \[ f_d (x) = {1 \over 4 \pi^2} \int_{S^1} \int^{x. \theta + d}_{x. \theta - d} {\widehat f_d(\theta, p) \over x.
Alexander Katsevich, Alexander G. Ramm
openaire   +2 more sources

Retinal applications of swept source optical coherence tomography (OCT) and optical coherence tomography angiography (OCTA).

Progress in retinal and eye research, 2021
The advent of optical coherence tomography (OCT) revolutionized both clinical assessment and research of vitreoretinal conditions. Since then, extraordinary advances have been made in this imaging technology, including the relatively recent development ...
I. Laíns   +8 more
semanticscholar   +1 more source

Tomography of the larynx

Clinical Radiology, 1965
Summary The separating factor or thickness of cut for a tomographic section is often described as being from 1 to 2 mm. Evidence is presented that in the case of the larynx this does not present a true picture. It is shown that the effective thickness of a tomographic section for this organ is often over 1 cm. In tomography of the larynx, thinness of
G M, Ardran, E, Emrys-Roberts
openaire   +2 more sources

Range tomography

Proceedings of the 2012 Internet Measurement Conference, 2012
The objective of early network tomography approaches was to produce a point estimate for the performance of each network link (Analog tomography). When it became clear that the previous approach is error-prone in practice, research shifted to Boolean tomography where each link is estimated as either "good" or "bad".
Sajjad Zarifzadeh   +2 more
openaire   +1 more source

Xerographic Tomography

Acta Radiologica. Diagnosis, 1977
Tomographic depiction using Xerox plates was compared with that of screen film tomography. The Xerox plates entail much higher demands as to the quality of tomographic blurring than screen film combinations. Circular or hypocycloid movements give rise to errors of depiction which are more disturbing in xerographic tomography due to the fact that the ...
C G, Helander, S, Reichmann, K, Astrand
openaire   +2 more sources

X-ray computed tomography

Machine Learning for Tomographic Imaging, 2019
Computed tomography (CT) is a non-destructive X-ray imaging method, which allows to visualize three-dimensional X-ray absorption properties of an object.
J. Jan
semanticscholar   +1 more source

Cellular tomography

2011
Traditionally, cellular specimens and tissues have been prepared for electron microscopy by chemical fixation or rapid freezing followed by freeze substitution and plastic embedding. Once embedded in a solid polymer, sections are obtained by room-temperature microtomy.
Andreas, Hoenger   +1 more
openaire   +2 more sources

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