Simultaneous phase-correction and denoising for diffusion-weighted MRI

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dc.citation.epage1316en_US
dc.citation.spage1313en_US
dc.contributor.authorKafalı, Sevgi Gökçeen_US
dc.contributor.authorÇukur, Tolgaen_US
dc.contributor.authorSarıtaş, Emine Ülküen_US
dc.coverage.spatialZonguldak, Turkeyen_US
dc.date.accessioned2018-04-12T11:48:25Z
dc.date.available2018-04-12T11:48:25Z
dc.date.issued2016en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.descriptionDate of Conference: 16-19 May 2016en_US
dc.descriptionConference Name: IEEE 24th Signal Processing and Communications Applications Conference, SIU 2016en_US
dc.description.abstractDiffusion-weighted imaging (DWI) suffers from low SNR when compared to regular MRI images. To attain reasonable SNR levels with high spatial resolution, multiple acquisitions of each slice have to be acquired. These repetitions are then averaged, with the goal of increasing the SNR. However, subject motion during diffusion-sensitizing gradients creates varying phases between repeated acquisitions. When direct complex averaging is performed, these phase offsets can cause unpredictable phase cancellations and local signal drops. Here, we propose a technique that simultaneously corrects phase and performs a non-local means filtering to reduce noise. The success of the proposed technique is demonstrated in vivo at 3T with DWI of the cervical spinal cord.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T11:48:25Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1109/SIU.2016.7495989en_US
dc.identifier.urihttp://hdl.handle.net/11693/37700
dc.language.isoTurkishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/SIU.2016.7495989en_US
dc.source.titleProceedings of the IEEE 24th Signal Processing and Communications Applications Conference, SIU 2016en_US
dc.subjectDiffusion-weighted MRIen_US
dc.subjectNon-local means filteringen_US
dc.subjectPhase correctionen_US
dc.titleSimultaneous phase-correction and denoising for diffusion-weighted MRIen_US
dc.title.alternativeDifüzyon ağırlıklı MRG için eşzamanlı faz düzeltimi ve gürültü giderimien_US
dc.typeConference Paperen_US

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