High Pitch Helical CT Reconstruction.
IEEE Trans Med Imaging
; 40(11): 3077-3088, 2021 11.
Article
em En
| MEDLINE
| ID: mdl-34029189
ABSTRACT
To avoid severe limited-view artifacts in reconstructed CT images, current multi-row detector CT (MDCT) scanners with a single x-ray source-detector assembly need to limit table translation speeds such that the pitch p (viz., normalized table translation distance per gantry rotation) is lower than 1.5. When , it remains an open question whether one can reconstruct clinically useful helical CT images without severe artifacts. In this work, we show that a synergistic use of advanced techniques in conventional helical filtered backprojection, compressed sensing, and more recent deep learning methods can be properly integrated to enable accurate reconstruction up to p=4 without significant artifacts for single source MDCT scans.
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Base de dados:
MEDLINE
Assunto principal:
Tomografia Computadorizada por Raios X
/
Tomografia Computadorizada Espiral
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article