In X-ray computed tomography (CT), measurement accuracy and image quality are strongly affected by the presence of geometrical misalignments and/or the wrong estimation of CT system geometry . In this work, the effects of detector misalignment are experimentally investigated. CT measurements of a calibrated ball bar were acquired first with the system aligned according to the manufacturer’s guidelines, and then after that the flat-panel detector was physically misaligned. The experimental results were compared to show the effects of detector misalignment on CT measurement errors.
Experimental investigation on the influence of detector misalignment on X-ray CT measurement accuracy
Aloisi Valentina
;Carmignato Simone;Savio Enrico
2017
Abstract
In X-ray computed tomography (CT), measurement accuracy and image quality are strongly affected by the presence of geometrical misalignments and/or the wrong estimation of CT system geometry . In this work, the effects of detector misalignment are experimentally investigated. CT measurements of a calibrated ball bar were acquired first with the system aligned according to the manufacturer’s guidelines, and then after that the flat-panel detector was physically misaligned. The experimental results were compared to show the effects of detector misalignment on CT measurement errors.
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