ToraSpot 1.0 – software for correction of the X-ray tube spot movement in tomographical projections

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F18%3A00500099" target="_blank" >RIV/68378297:_____/18:00500099 - isvavai.cz</a>

Result on the web

<a href="http://www.itam.cas.cz/Software/ToraSpot/index.html" target="_blank" >http://www.itam.cas.cz/Software/ToraSpot/index.html</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

ToraSpot 1.0 – software for correction of the X-ray tube spot movement in tomographical projections

Original language description

During computed tomography (CT), a set of images is taken from different angles, covering usually one full rotation (360°). The set typically consists of hundreds to thousands of projections. Exposition of such an amount of projections takes a significant time (typically in order of tens of minutes to units of hours) and during this time, there can be drift in electrical (centering currents) as well as mechanical parameters (temperature effects, wearing out of the target) of the X-ray tube, manifesting themselves as a geometrical movement of the X-ray source with respect to the rotational axis. This movement can be significant in particular with high magnification, i.e., high-resolution micro CT, when there is a big ratio of the distances tube – detector and tube – object. The tube spot movement during acquisition of the projections affects the sharpness of the 3D reconstruction considerably, which of course leads to lower resolution then theoretically possible with the given magnification. It is therefore of a great interest to compensate the tube spot movement. Several methods have been introduced to compensate the effects of the spot movement in the scanned images. One of these methods relies on acquiring reference images repeatedly during the process of scanning and determining the shifts between them. After that, each projection can be shifted appropriatelly to compensate the spot movement effects. ToraSpot is a software with a GUI which allows a user-friendly calculation of the shifts between reference images and shifting of the projection images.

Czech name

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Czech description

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Type

R - Software

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/LO1219" target="_blank" >LO1219: Sustainable advanced development of CET</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Internal product ID

ToraSpot-1.0-2018

Technical parameters

Bezplatnou licenci poskytne Michal Vopálenský, vopalensky@itam.cas.cz

Economical parameters

výrazné zlepšení rozlišení ve výsledném tomografickém modelu

Owner IČO

68378297

Owner name

Ústav teoretické a aplikované mechaniky AV ČR, v. v. i.