Flow and peak velocity measurements in patients with aortic valve stenosis using phase contrast MR accelerated with k-t BLAST

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Fältnamn	Indikatorer	Metadata
000		03501naa a2200409 4500
001		oai:DiVA.org:oru-27174
003		SwePub
008		130130s2012 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-271742 URI
024	7	a https://doi.org/10.1016/j.ejrad.2011.06.0342 DOI
040		a (SwePub)oru
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Thunberg, Per,d 1968-u Department of Medical Physics, Örebro University Hospital, Örebro, Sweden4 aut0 (Swepub:oru)prtg
245	1 0	a Flow and peak velocity measurements in patients with aortic valve stenosis using phase contrast MR accelerated with k-t BLAST
264	1	a Clare, Ireland :b Elsevier,c 2012
338		a print2 rdacarrier
500		a Funding agency:Research Committee of Örebro County Council
520		a Objective: To investigate the accuracy of velocity measurements in patients with aortic valve stenosis using phase contrast (PC) imaging accelerated with SENSE (Sensitivity Encoding) and k-t BLAST (Broad-use Linear Acquisition Speed-up Technique).Methods: Accelerated quantitative breath hold PC measurements, using SENSE and k-t BLAST, were performed in twelve patients whose aortic valve stenosis had been initially diagnosed using echocardiography. Stroke volume (SV) and peak velocity measurements were performed on each subject in three adjacent slices using both accelerating methods.Results: The peak velocities measured with PC MRI using SENSE were -8.0±9.5% lower (p<0.01) compared to the peak velocities measured with k-t BLAST and the correlation was r=0.83. The stroke volumes when using SENSE were slightly higher 0.4±17.1 ml compared to the SV obtained using k-t BLAST but the difference was not significant (p>0.05).Conclusions In this study higher peak velocities were measured in patients with aortic stenosis when combining k-t BLAST with PC MRI compared to PC MRI using SENSE. A probable explanation of this difference is the higher temporal resolution achieved in the k-t BLAST measurement. There was, however, no significant difference between calculated SV based on PC MRI using SENSE and k-t BLAST, respectively.
650	7	a MEDICIN OCH HÄLSOVETENSKAPx Klinisk medicinx Radiologi och bildbehandling0 (SwePub)302082 hsv//swe
650	7	a MEDICAL AND HEALTH SCIENCESx Clinical Medicinex Radiology, Nuclear Medicine and Medical Imaging0 (SwePub)302082 hsv//eng
653		a Aortic valve
653		a stenosis
653		a k-t BLAST
653		a SENSE
653		a phase contrast imaging
653		a Radiologi
653		a Radiology
700	1	a Emilsson, Kent,d 1963-u Department of Clinical Physiology, Örebro University Hospital, Örebro, Sweden4 aut0 (Swepub:oru)kten
700	1	a Rask, Peteru Department of Clinical Physiology, Örebro University Hospital, Örebro, Sweden4 aut0 (Swepub:oru)prk
700	1	a Kähäri, Andersu Department of Radiology, Örebro University Hospital, Örebro, Sweden4 aut
710	2	a Department of Medical Physics, Örebro University Hospital, Örebro, Swedenb Department of Clinical Physiology, Örebro University Hospital, Örebro, Sweden4 org
773	0	t European Journal of Radiologyd Clare, Ireland : Elsevierg 81:9, s. 2203-2207q 81:9<2203-2207x 0720-048Xx 1872-7727
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-27174
856	4 8	u https://doi.org/10.1016/j.ejrad.2011.06.034

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Av författaren/redakt...: Thunberg, Per, 1 ...; Emilsson, Kent, ...; Rask, Peter; Kähäri, Anders

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MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Klinisk medicin; och Radiologi och bi ...

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Av lärosätet: Örebro universitet

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