Coronary Artery Motion and Cardiac Phases : Dependency on Heart Rate Implications for CT Image Reconstruction
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 69720
Author(s) Husmann, Lars; Leschka, Sebastian; Desbiolles, Lotus; Schepis, Tiziano; Gaemperli, Oliver; Seifert, Burkhardt; Cattin, Philippe; Frauenfelder, Thomas; Flohr, Thomas G; Marincek, Borut; Kaufmann, Philipp A; Alkadhi, Hatem
Author(s) at UniBasel Cattin, Philippe Claude
Year 2007
Title Coronary Artery Motion and Cardiac Phases : Dependency on Heart Rate Implications for CT Image Reconstruction
Journal Radiology
Volume 245
Number 2
Pages / Article-Number 567-76
Keywords Medical -> Heart
Abstract This study had institutional review board approval; written informed consent was obtained. The purpose was to prospectively determine the heart rate (HR) dependency of three-dimensional (3D) coronary artery motion by incorporating into analysis the durations of systole and diastole. Thirty patients (seven women, 23 men; mean age, 56.6 years ± 12.7 [standard deviation]; HR: 45-100 beats per minute) underwent electrocardiographically gated 64-section computed tomographic (CT) coronary angiography to determine coronary motion velocities at bifurcation points. Significance of velocity differences (P < .05) was determined by using analysis of variance for repeated measures and Bonferroni post hoc tests. HR dependency was determined by using linear regression analysis. HR significantly affected 3D coronary motion (r = 0.47, P < .009) through nonproportional shortening of systole and diastole (r = -0.82, P < .001), leading to percentage reconstruction interval shifts of coronary velocity troughs and peaks (P < .01). Results suggest that image reconstruction algorithms at CT coronary angiography be adapted to the individual patient`s HR.
Publisher The Radiological Society of North America
ISSN/ISBN 0033-8419
edoc-URL http://edoc.unibas.ch/dok/A5250270
Full Text on edoc No
Digital Object Identifier DOI 10.1148/radiol.2451061791
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/17848683
ISI-Number WOS:000250343800034
Document type (ISI) Journal Article
 
   

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