Separating the left cardiac ventricle from the atrium in short axis MR images using the equation of the atrioventricular plane

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Thunberg, Per,1968-Örebro universitet,Hälsoakademin,Department of Biomedical Engineering (författare)

Separating the left cardiac ventricle from the atrium in short axis MR images using the equation of the atrioventricular plane

Artikel/kapitelEngelska2008

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Oxford :Wiley-Blackwell Publishing Inc.2008
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LIBRIS-ID:oai:DiVA.org:oru-3410
https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-3410URI
https://doi.org/10.1111/j.1475-097X.2008.00799.xDOI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:art swepub-publicationtype

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Short axis (SA) images obtained from cardiac magnetic resonance imaging are used to advantage in the calculation of important clinical parameters such as the ejection fraction and stroke volume (SV). A prerequisite for these calculations is the separation of the left ventricle and the left atrium. When only using the information seen in the SA images this separation can be a source of error due to the through-plane motion of the basal part of the left ventricle. In this study a method is proposed where the separation of the left ventricle and the atrium is performed by identifying the intersections of the atrioventricular plane in the SA images. The equation of the atrioventricular plane was determined in both systole and diastole using long axis and four chamber image views. Stroke volumes were measured in 20 patients using SA images where the endocardium had been delineated. The SV obtained using the new method was compared with quantitative flow measurements and the conventional technique for calculation of SV from SA images, respectively. The agreement of SV was, according to Bland-Altman analysis, 2.0 ml (95% CI -12.0 to 15.9 ml) in comparison with the flow measurements and 2.2 ml (95% CI -9.2 to 13.6 ml) compared to the conventional method. Inter- and intra-observer variability, when using the new proposed method, was small. This study shows that the identification of the left atrioventricular plane in SA images can be used in the separation of the left atrium and ventricle.

Ämnesord och genrebeteckningar

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Kardiologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Cardiac and Cardiovascular Systems hsv//eng
Adolescent
Adult
Aged
Child
Female
Heart Atria
Heartanatomy
Heart histology
Heart Ventricles/*anatomy & histology/physiology
Humans
Image Interpretation; Computer-Assisted/*methods
Magnetic Resonance Imaging; Cine/*methods
Male
Middle Aged
Mitral Valve/anatomy & histology/physiology
Observer Variation
Stroke Volume
Ventricular Function; Left
MEDICINE
MEDICIN
Internal medicine
Invärtesmedicin
Cardiology
Kardiologi
Cardiology
Kardiologi

Biuppslag (personer, institutioner, konferenser, titlar ...)

Emilsson, Kent,1963-Örebro universitet,Hälsoakademin,Department of Clinical Physiology, Örebro University Hospital, Örebro, Sweden(Swepub:oru)kten (författare)
Rask, PeterDepartment of Clinical Physiology,, Örebro University Hospital, Örebro, Sweden(Swepub:oru)prk (författare)
Kähäri, AndersDepartment of Radiology, Örebro University Hospital, Örebro, Sweden (författare)
Örebro universitetHälsoakademin (creator_code:org_t)

Sammanhörande titlar

Ingår i:Clinical Physiology and Functional ImagingOxford : Wiley-Blackwell Publishing Inc.28:4, s. 222-2281475-09611475-097X

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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 Kardiologi

Artiklar i publikationen: Clinical Physiol ...

Av lärosätet: Örebro universitet

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