This case series describes a reconstruction method applied to a cone beam computed
tomography (CBCT) projection data set that used selected basis projection images to
improve diagnostic image quality for patients who moved during the radiographic procedure.
Reconstructed volumetric data from 6 patients at 2 institutions initially exhibited
characteristic double contour images as a result of motion artifacts. For each case,
the CBCT basis images from the entire projection data set were displayed as a cine
sequence, and patient movement was identified during the first or last 90-degrees
of a full 360-degree acquisition trajectory. Employing a useful reconstruction function
of proprietary software, a secondary reconstruction was performed by discarding data
acquired during the first and last 90-degree rotation. For all cases, this method
provided a volumetric data set without motion artifact. General practitioners can
apply this clinical method, whenever appropriate, to avoid a rescan and keep patient
exposure “as low as diagnostically acceptable.”
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Article info
Publication history
Published online: July 15, 2019
Accepted:
July 7,
2019
Received in revised form:
June 10,
2019
Received:
April 2,
2019
Identification
Copyright
© 2019 Elsevier Inc. All rights reserved.
