Reproducibility of multi‐slice spiral computed tomography scans:An experimental study: Reproducibility of multi‐slice spiral CT scans

In multi‐slice spiral computed tomography (CT) images interpolation artifacts are present. The relationship between the x‐ray tube rotation angle and these artifacts is demonstrated. A head phantom was repeatedly scanned with a four‐slice CT scanner at different pitch values. Two scans, made with id...

Full description

Saved in:
Bibliographic Details
Published in:Medical physics (Lancaster) 2004-10, Vol.31 (10), p.2785-2786
Main Authors: van Straten, Marcel, Venema, Henk W., Hartman, Joris, den Heeten, Gerard J., Grimbergen, Cornelis A.
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In multi‐slice spiral computed tomography (CT) images interpolation artifacts are present. The relationship between the x‐ray tube rotation angle and these artifacts is demonstrated. A head phantom was repeatedly scanned with a four‐slice CT scanner at different pitch values. Two scans, made with identical scan parameters, nearly always have different x‐ray tube starting angles. Consequently, artifacts appeared differently and residual artifacts appeared when subtractions were made. We conclude that only if the x‐ray tube starting angle is equal for both scans or if a very low pitch is used, images are highly reproducible.
ISSN:0094-2405
2473-4209
DOI:10.1118/1.1796131