title: Respiratory motion correction in dynamic-MRI: application to small bowel motility quantification during free breathin.
abstract: This study introduces a combination of two registration techniques for respiratory motion removal and the quantification of small bowel motility from free breathing cine MRI. The use of robust data decomposition registration (RDDR) allows for exclusive correction of respiratory motion in order to avoid errors in further analysis of motility due to the effects of breathing. The proposed method is assessed using regions of interest (ROIs) contoured in dynamic MRI of six healthy volunteers. The use of RDDR prior to motility quantification results in reduced errors on motility scores in ROIs, with respect to breath-holds.
authors.affiliation: Centre for Medical Imaging, University College London, UK.
authors.forename: Valentin
authors.initials: V
authors.lastname: Hamy
authors.affiliation: Centre for Medical Imaging, University College London, UK.
authors.forename: Alex
authors.initials: A
authors.lastname: Menys
authors.affiliation: University College London Hospitals, London, UK.
authors.forename: Emma
authors.initials: E
authors.lastname: Helbren
authors.affiliation: Nancy University, Nancy, France.
authors.forename: Freddy
authors.initials: F
authors.lastname: Odille
authors.affiliation: Centre for Medical Imaging, University College London, UK.
authors.forename: Shonit
authors.initials: S
authors.lastname: Punwani
authors.affiliation: Centre for Medical Imaging, University College London, UK.
authors.forename: Stuart
authors.initials: S
authors.lastname: Taylor
authors.affiliation: Centre for Medical Imaging, University College London, UK.
authors.forename: David
authors.initials: D
authors.lastname: Atkinson
mesh_terms: D000465:Algorithms; D016477:Artifacts; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007421:Intestine, Small / Q000033:anatomy & histology*; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D010363:Pattern Recognition, Automated / Q000379:methods*; D015203:Reproducibility of Results; D015656:Respiratory Mechanics; D055425:Respiratory-Gated Imaging Techniques / Q000379:methods*; D012680:Sensitivity and Specificity