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Erschienen in: The International Journal of Cardiovascular Imaging 2/2014

01.12.2014 | Original Paper

Evaluation of extracellular volume fraction thresholds corresponding to myocardial late-gadolinium enhancement using cardiac magnetic resonance

verfasst von: Sung Ho Hwang, Eui-Young Choi, Chul Hwan Park, Mun Young Paek, Andreas Greiser, Tae Hoon Kim, Byoung Wook Choi

Erschienen in: The International Journal of Cardiovascular Imaging | Sonderheft 2/2014

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Abstract

To establish extracellular volume fraction (ECV) thresholds corresponding to myocardial lesion detected by late-gadolinium enhancement (LGE) cardiac magnetic resonance (CMR) imaging. Fifty-six patients with myocardial infarction or hypertrophic cardiomyopathy underwent LGE, pre- and post-contrast modified Look-Locker inversion recovery (MOLLI) sequences on a 3-T CMR system. Short-axis MOLLI images generated ECV maps of left ventricular (LV) walls. The LGE areas were semi-automatically determined by different signal threshold techniques. The areas of elevated ECV were measured using ECV thresholds of 28–48 %. The LGE areas were compared with the areas of elevated ECV at the corresponding LV levels. The myocardial areas of LGE and elevated ECVs showed a strong and positive correlation (P < 0.01). The LGE threshold, set at two standard deviations above the mean signal from the remote myocardium, corresponded well with the area of ECV >32 %. When using the full width at half-maximum (FWHM) technique, the LGE area corresponded well with the area of ECV >42 or 44 %. By applying particular ECV thresholds, myocardial ECV maps can define myocardial status equivalent to LGE, and definite ECV thresholds may be useful for the straightforward evaluation of myocardial phenotypes.
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Metadaten
Titel
Evaluation of extracellular volume fraction thresholds corresponding to myocardial late-gadolinium enhancement using cardiac magnetic resonance
verfasst von
Sung Ho Hwang
Eui-Young Choi
Chul Hwan Park
Mun Young Paek
Andreas Greiser
Tae Hoon Kim
Byoung Wook Choi
Publikationsdatum
01.12.2014
Verlag
Springer Netherlands
Erschienen in
The International Journal of Cardiovascular Imaging / Ausgabe Sonderheft 2/2014
Print ISSN: 1569-5794
Elektronische ISSN: 1875-8312
DOI
https://doi.org/10.1007/s10554-014-0489-6

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