An Easily Assembled Laboratory Exercise in Computed Tomography

Autor/inn/en	Mylott, Elliot; Klepetka, Ryan; Dunlap, Justin C.; Widenhorn, Ralf
Titel	An Easily Assembled Laboratory Exercise in Computed Tomography
Quelle	In: European Journal of Physics, 32 (2011) 5, S.1227-1235 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0143-0807
DOI	10.1088/0143-0807/32/5/010
Schlagwörter	Radiation; Science Laboratories; Lighting; Science Activities; Computer Uses in Education; Data Collection; Data Analysis; Experiments; Motion; College Science; Undergraduate Study; Laboratory Equipment + Suchen Sie Ihr Suchwort? Strahlung; Beleuchtung; Computernutzung; Data capture; Datensammlung; Auswertung; Erprobung; Bewegungsablauf; Grundstudium; Laborausstattung
Abstract	In this paper, we present a laboratory activity in computed tomography (CT) primarily composed of a photogate and a rotary motion sensor that can be assembled quickly and partially automates data collection and analysis. We use an enclosure made with a light filter that is largely opaque in the visible spectrum but mostly transparent to the near IR light of the photogate (880 nm) to scan objects hidden from the human eye. This experiment effectively conveys how an image is formed during a CT scan and highlights the important physical and imaging concepts behind CT such as electromagnetic radiation, the interaction of light and matter, artefacts and windowing. Like our setup, previous undergraduate level laboratory activities which teach the basics of CT have also utilized light sources rather than x-rays; however, they required a more extensive setup and used devices not always easily found in undergraduate laboratories. Our setup is easily implemented with equipment found in many teaching laboratories. (Contains 6 figures and 6 footnotes.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10