Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/89686
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dc.contributorDepartment of Health Technology and Informatics-
dc.creatorYang, Z-
dc.creatorRen, L-
dc.creatorYin, FF-
dc.creatorLiang, X-
dc.creatorCai, J-
dc.date.accessioned2021-04-28T02:29:15Z-
dc.date.available2021-04-28T02:29:15Z-
dc.identifier.urihttp://hdl.handle.net/10397/89686-
dc.language.isoenen_US
dc.publisherKe Ai Publishing Communications Ltd.en_US
dc.rights© 2020 National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention. Production and hosting by Elsevier B.V. on behalf of KeAi. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).en_US
dc.rightsThe following publication Yang, Z., Ren, L., Yin, F.-F., Liang, X., & Cai, J. (2020). Motion robust 4D-MRI sorting based on anatomic feature matching: A digital phantom simulation study. Radiation Medicine and Protection, 1(1), 41-47 is available at https://doi.org/10.1016/j.radmp.2020.01.003.en_US
dc.subjectMotion artifactsen_US
dc.subject4D-MRIen_US
dc.subjectXCATen_US
dc.subjectLiver canceren_US
dc.subjectSimulationen_US
dc.titleMotion robust 4D-MRI sorting based on anatomic feature matching : a digital phantom simulation studyen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage41-
dc.identifier.epage47-
dc.identifier.volume1-
dc.identifier.issue1-
dc.identifier.doi10.1016/j.radmp.2020.01.003-
dcterms.abstractPurpose Motion artifacts induced by breathing variations are common in 4D-MRI images. This study aims to reduce the motion artifacts by developing a novel, robust 4D-MRI sorting method based on anatomic feature matching and applicable in both cine and sequential acquisition.-
dcterms.abstractMethod The proposed method uses the diaphragm as the anatomic feature to guide the sorting of 4D-MRI images. Initially, both abdominal 2D sagittal cine MRI images and axial MRI images were acquired. The sagittal cine MRI images were divided into 10 phases as ground truth. Next, the phase of each axial MRI image is determined by matching its diaphragm position in the intersection plane to the ground truth cine MRI. Then, those matched phases axial images were sorted into 10-phase bins which were identical to the ground truth cine images. Finally, 10-phase 4D-MRI were reconstructed from these sorted axial images. The accuracy of reconstructed 4D-MRI data was evaluated by comparing with the ground truth using the 4D eXtended Cardiac Torso (XCAT) digital phantom. The effects of breathing signal, including both regular (cosine function) and irregular (patient data) in both axial cine and sequential scanning modes, on reconstruction accuracy were investigated by calculating total relative error (TRE) of the 4D volumes, Volume-Percent-Difference (VPD) and Center-of-Mass-Shift (COMS) of the estimated tumor volume, compared with the ground truth XCAT images.-
dcterms.abstractResults In both scanning modes, reconstructed 4D-MRI images matched well with ground truth with minimal motion artifacts. The averaged TRE of the 4D volume, VPD and COMS of the EOE phase in both scanning modes are 0.32%/1.20%/±0.05 ​mm for regular breathing, and 1.13%/4.26%/±0.21 ​mm for patient irregular breathing.-
dcterms.abstractConclusion The preliminary evaluation results illustrated the feasibility of the robust 4D-MRI sorting method based on anatomic feature matching. This method provides improved image quality with reduced motion artifacts for both cine and sequential scanning modes.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationRadiation medicine and protection, Mar. 2020, v. 1, no. 1, p. 41-47-
dcterms.isPartOfRadiation medicine and protection-
dcterms.issued2020-03-
dc.identifier.eissn2666-5557-
dc.description.validate202104 bcvc-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumbera0802-n03en_US
dc.identifier.SubFormID1938en_US
dc.description.fundingSourceRGC-
dc.description.fundingTextGRF 151021/18M, GRF 151022/19M-
dc.description.pubStatusPublisheden_US
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