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Image quality and m...
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Rosendahl, LeneLinköpings universitet,Klinisk fysiologi,Hälsouniversitetet
(author)
Image quality and myocardial scar size determined with magnetic resonance imaging in patients with permanent atrial fibrillation : A comparison of two imaging protocols
- Article/chapterEnglish2010
Publisher, publication year, extent ...
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John Wiley & Sons,2010
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Numbers
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LIBRIS-ID:oai:DiVA.org:hj-63326
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https://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-63326URI
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https://doi.org/10.1111/j.1475-097X.2009.00914.xDOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-72074URI
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54159URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Funding Agency:Linköping Heart Centre
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Background: Magnetic resonance imaging (MRI) of the heart generally requires breath holding and a regular rhythm. Single shot 2D steady-state free precession (SS_SSFP) is a fast sequence insensitive to arrhythmia as well as breath holding. Our purpose was to determine image quality, signal-to-noise (SNR) and contrast-to-noise (CNR) ratios and infarct size with a fast single shot and a standard segmented MRI sequence in patients with permanent atrial fibrillation and chronic myocardial infarction.Methods: Twenty patients with chronic myocardial infarction and ongoing atrial fibrillation were examined with inversion recovery SS_SSFP and segmented inversion recovery 2D fast gradient echo (IR_FGRE). Image quality was assessed in four categories: delineation of infarcted and non-infarcted myocardium, occurrence of artefacts and overall image quality. SNR and CNR were calculated. Myocardial volume (ml) and infarct size, expressed as volume (ml) and extent (%), were calculated, and the methodological error was assessed.Results: SS_SSFP had significantly better quality scores in all categories (P = 0·037, P = 0·014, P = 0·021, P = 0·03). SNRinfarct and SNRblood were significantly better for IR_FGRE than for SS_SSFP (P = 0·048, P = 0·018). No significant difference was found in SNRmyocardium and CNR. The myocardial volume was significantly larger with SS_SSFP (170·7 versus 159·2 ml, P<0·001), but no significant difference was found in infarct volume and infarct extent.Conclusion: SS_SSFP displayed significantly better image quality than IR_FGRE. The infarct size and the error in its determination were equal for both sequences, and the examination time was shorter with SS_SSFP.
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Ahlander, Britt-Marie,1954-Department of Radiology, Ryhov County Hospital, Jönköping, Sweden(Swepub:oru)bear
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Björklund, Per-GunnarDepartment of Clinical Physiology, Ryhov County Hospital, Jönköping, Sweden
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Blomstrand, PeterDepartment of Clinical Physiology, Ryhov County Hospital, Jönköping, Sweden(Swepub:hj)BLOPET
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Brudin, LarsLinköpings universitet,Klinisk fysiologi,Hälsouniversitetet(Swepub:liu)larbr27
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Engvall, JanÖstergötlands Läns Landsting,Linköpings universitet,Klinisk fysiologi,Hälsouniversitetet,Fysiologiska kliniken(Swepub:liu)janen74
(author)
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Linköpings universitetKlinisk fysiologi
(creator_code:org_t)
Related titles
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In:Clinical Physiology and Functional Imaging: John Wiley & Sons30:2, s. 122-1291475-09611475-097X
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