Sökning: L773:1873 5894 OR L773:0730 725X >
Water-fat separatio...
-
Andersson, JonathanUppsala universitet,Radiologi
(författare)
Water-fat separation incorporating spatial smoothing is robust to noise
- Artikel/kapitelEngelska2018
Förlag, utgivningsår, omfång ...
-
Elsevier BV,2018
-
electronicrdacarrier
Nummerbeteckningar
-
LIBRIS-ID:oai:DiVA.org:uu-347450
-
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-347450URI
-
https://doi.org/10.1016/j.mri.2018.03.015DOI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:ref swepub-contenttype
-
Ämneskategori:art swepub-publicationtype
Anmärkningar
-
PURPOSE: To develop and evaluate a noise-robust method for reconstruction of water and fat images for spoiled gradient multi-echo sequences.METHODS: The proposed method performs water-fat separation by using a graph cut to minimize an energy function consisting of unary and binary terms. Spatial smoothing is incorporated to increase robustness to noise. The graph cut can fail to find a solution covering the entire image, in which case the relative weighting of the unary term is iteratively increased until a complete solution is found. The proposed method was compared to two previously published methods. Reconstructions were performed on 16 cases taken from the 2012 ISMRM water-fat reconstruction challenge dataset, for which reference reconstructions were provided. Robustness towards noise was evaluated by reconstructing images with different levels of noise added. The percentage of water-fat swaps were calculated to measure performance.RESULTS: At low noise levels the proposed method produced similar results to one of the previously published methods, while outperforming the other. The proposed method significantly outperformed both of the previously published methods at moderate and high noise levels.CONCLUSION: By incorporating spatial smoothing, an increased robustness towards noise is achieved when performing water-fat reconstruction of spoiled gradient multi-echo sequences.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Ahlström, Håkan,1953-Uppsala universitet,Radiologi,Antaros Med, Molndal, Sweden(Swepub:uu)hakanahl
(författare)
-
Kullberg, JoelUppsala universitet,Radiologi,Antaros Med, Molndal, Sweden(Swepub:uu)jokul377
(författare)
-
Uppsala universitetRadiologi
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Magnetic Resonance Imaging: Elsevier BV50, s. 78-830730-725X1873-5894
Internetlänk
Hitta via bibliotek
Till lärosätets databas