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- Foster, J E (författare)
Determination of left ventricular long-axis orientation using MRI: changes during the respiratory and cardiac cycles in normal and diseased subjects
- Artikel/kapitelEngelska2005
Förlag, utgivningsår, omfång ...
- 2005
Nummerbeteckningar
- LIBRIS-ID:oai:lup.lub.lu.se:c6f20424-3988-4552-a64d-5e7678d43508
- https://lup.lub.lu.se/record/229333URI
- https://doi.org/10.1111/j.1475-097X.2005.00624.xDOI
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- Språk:engelska
- Sammanfattning på:engelska
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- Background: It has previously been shown that magnetic resonance imaging (MRI) can be used to accurately determine left ventricular (LV) long-axis orientation in healthy individuals. However, the inter- and intra-observer variability in patients with acute coronary syndrome (ACS) and chronic heart failure (CHF) has not been explored. Furthermore, the changes in LV long-axis orientation because of respiration and during the cardiac cycle remain to be determined. Methods: LV long-axis orientation was determined by MRI in the frontal and transverse planes in 44 subjects with no cardiac disease, 20 ACS patients and 13 CHF patients. Changes in LV long-axis orientation because of respiration were assessed in a subset of 25 subjects. Changes during the cardiac cycle were assessed in six subjects from each subject group. Reproducibility was assessed by a re-examination of 17 subjects after 28 days. Results: The inter- and intra-observer variability for LV long-axis orientation was low for all subject groups. The difference between the baseline and the 28 days examinations was -1.4 +/- 5.9 degrees and -0.8 +/- 4.4 degrees in the frontal and transverse planes, respectively. No significant change in LV long-axis orientation was found between end-expiration and end-inspiration (frontal plane, P = 0.63 and transverse plane, P = 0.42; n = 25). No significant difference in change of the LV long-axis orientation during the cardiac cycle was found between the subject groups (frontal plane, chi-square 1.8, P = 0.40 and transverse plane, chi-square 5.7, P = 0.06). Conclusions: There is a low inter-and intra-observer variability and a high reproducibility for determining LV long-axis orientation in patients with no cardiac disease as well as in patients with ACS or CHF. There is no significant change in LV long-axis orientation due to respiration, and only small changes during the cardiac cycle in these groups.
Ämnesord och genrebeteckningar
- MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Fysiologi hsv//swe
- MEDICAL AND HEALTH SCIENCES Basic Medicine Physiology hsv//eng
- LV long axis orientation
- magnetic resonance imaging
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Engblom, HenrikLund University,Lunds universitet,Klinisk fysiologi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Clinical Physiology (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)klin-hen (författare)
- Martin, T N (författare)
- Wagner, G S (författare)
- Steedman, T (författare)
- Ferrua, S (författare)
- Elliott, A T (författare)
- Dargie, H J (författare)
- Groenning, B A (författare)
- Klinisk fysiologi, LundSektion V (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Clinical Physiology and Functional Imaging25:5, s. 286-2921475-0961
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- Clinical Physiology and Functional Imaging (Sök värdpublikationen i LIBRIS)
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- Engblom, Henrik
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- Ferrua, S
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- Elliott, A T
- Dargie, H J
- Groenning, B A
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