Simultaneous phase-correction and denoising for diffusion-weighted MRI
dc.citation.epage | 1316 | en_US |
dc.citation.spage | 1313 | en_US |
dc.contributor.author | Kafalı, Sevgi Gökçe | en_US |
dc.contributor.author | Çukur, Tolga | en_US |
dc.contributor.author | Sarıtaş, Emine Ülkü | en_US |
dc.coverage.spatial | Zonguldak, Turkey | en_US |
dc.date.accessioned | 2018-04-12T11:48:25Z | |
dc.date.available | 2018-04-12T11:48:25Z | |
dc.date.issued | 2016 | en_US |
dc.department | Department of Electrical and Electronics Engineering | en_US |
dc.department | National Magnetic Resonance Research Center (UMRAM) | en_US |
dc.description | Date of Conference: 16-19 May 2016 | en_US |
dc.description | Conference Name: IEEE 24th Signal Processing and Communications Applications Conference, SIU 2016 | en_US |
dc.description.abstract | Diffusion-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.provenance | Made 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: 2016 | en |
dc.identifier.doi | 10.1109/SIU.2016.7495989 | en_US |
dc.identifier.uri | http://hdl.handle.net/11693/37700 | |
dc.language.iso | Turkish | en_US |
dc.publisher | IEEE | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1109/SIU.2016.7495989 | en_US |
dc.source.title | Proceedings of the IEEE 24th Signal Processing and Communications Applications Conference, SIU 2016 | en_US |
dc.subject | Diffusion-weighted MRI | en_US |
dc.subject | Non-local means filtering | en_US |
dc.subject | Phase correction | en_US |
dc.title | Simultaneous phase-correction and denoising for diffusion-weighted MRI | en_US |
dc.title.alternative | Difüzyon ağırlıklı MRG için eşzamanlı faz düzeltimi ve gürültü giderimi | en_US |
dc.type | Conference Paper | en_US |
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