Comparison of accuracy of axial slices versus short-axis slices for measuring ventricular volumes by cardiac magnetic resonance in patients with corrected tetralogy of fallot.

Fratz, S; Schuhbaeck, A; Buchner, C; Busch, R; Meierhofer, C; Martinoff, S; Hess, J; Stern, H

doi:10.1016/j.amjcard.2009.02.030

2009

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Title:: Comparison of accuracy of axial slices versus short-axis slices for measuring ventricular volumes by cardiac magnetic resonance in patients with corrected tetralogy of fallot.
Document type:: Comparative Study; Journal Article; Article
Author(s):: Fratz, S; Schuhbaeck, A; Buchner, C; Busch, R; Meierhofer, C; Martinoff, S; Hess, J; Stern, H
Abstract:: The best method to measure right (RV) and left (LV) ventricle volumes of patients with corrected tetralogy of Fallot is considered cardiac magnetic resonance (CMR). However, to date, no standard protocol to measure RV volumes by CMR exists. RV volumes can be measured from a stack of short-axis slices or a stack of axial slices through the patient's chest. Therefore, the aim of this study was to determine whether short-axis or axial slices are more reliable for routine measurement of RV and LV volumes in patients with corrected tetralogy of Fallot. We studied consecutive patients with corrected tetralogy of Fallot (n = 46) undergoing routine CMR. The end-diastolic and end-systolic RV and LV volumes were measured by 2 investigators unaware of the results of the other measurements using short-axis and axial slices, and the inter- and intraobserver variances were compared. The design of the study was based on the Standards for Reporting of Diagnostic Accuracy. Interobserver variance was significantly smaller using axial slices than using short-axis slices for the RV end-systolic volumes (127.9%(2) vs 315.1%(2); p = 0.003), LV end-diastolic volumes (11.4%(2) vs 36.1%(2); p <0.001), and LV end-systolic volumes (31.9%(2) vs 176.1%(2); p <0.001). Intraobserver variance was significantly smaller using axial slices than using short-axis slices for the RV end-diastolic volumes (26.7%(2) vs 51.1%(2); p = 0.032), LV end-diastolic volumes (11.0%(2) vs 23.5%(2); p = 0.012), and LV end-systolic volumes (34.3%(2) vs 86.1%(2); p = 0.003). In conclusion, axial slices are more reproducible than short-axis slices for measuring ventricular volumes of patients with corrected tetralogy of Fallot by CMR.
Journal title abbreviation:: Am J Cardiol
Year:: 2009
Journal volume:: 103
Journal issue:: 12
Pages contribution:: 1764-9
Language:: eng
Fulltext / DOI:: doi:10.1016/j.amjcard.2009.02.030
Pubmed ID:: http://view.ncbi.nlm.nih.gov/pubmed/19539090
Print-ISSN:: 0002-9149
TUM Institution:: Institut für Medizinische Statistik und Epidemiologie; Institut für Radiologie; Klinik für Kinderkardiologie und angeborene Herzfehler (Prof. Hess)
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mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Departments Clinical Medicine Institut für Diagnostische und Interventionelle Radiologie (Prof. Makowski)Institut für Radiologie und Nuklearmedizin 2009

mediaTUM Gesamtbestand Hochschulbibliographie 2009 Fakultäten Medizin Institut für Radiologie

mediaTUM Gesamtbestand Hochschulbibliographie 2009 Fakultäten Medizin Institut für Medizinische Statistik und Epidemiologie

mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Departments Clinical Medicine Lehr- und Forschungskooperationen mit den Kliniken und Instituten am Deutschen Herzzentrum Klinik für Kinderkardiologie und angeborene Herzfehler (DHM) (Prof. Ewert)2009

mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Departments Clinical Medicine Institut für KI und Informatik in der Medizin (Prof. Rückert)2009