A method for including redundant data in computed tomography

A method for including redundant data in fan-beam computed tomography (CT) is presented. It is a natural extension of the Parker [Med. Phys. 9, 254–257 (1982)] short-scan approach applied to divergent fan-beam (or cone-beam) data when the data set covers between the minimally complete set of 180° pl...

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Veröffentlicht in:	Medical physics (Lancaster) 2000-04, Vol.27 (4), p.773-774
1. Verfasser:	Silver, Michael D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Computed radiography Computed tomography computerised tomography CT reconstruction fan‐ or cone‐beam geometry Image analysis Image Processing, Computer-Assisted - methods image reconstruction medical image processing Models, Statistical Parker weighting Physicists short‐scan reconstruction Statistics as Topic - methods Tomography, X-Ray Computed - methods
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Zusammenfassung:	A method for including redundant data in fan-beam computed tomography (CT) is presented. It is a natural extension of the Parker [Med. Phys. 9, 254–257 (1982)] short-scan approach applied to divergent fan-beam (or cone-beam) data when the data set covers between the minimally complete set of 180° plus fan angle and 360°. A virtual fan angle is introduced whose value is the difference between the angular range of the data collected and 180°. Parker-weights are then applied as if the field-of-view is spanned by the virtual fan angle.
ISSN:	0094-2405 2473-4209
DOI:	10.1118/1.598939