Document Detail


Dual-step prospective ECG-triggered 128-slice dual-source CT for evaluation of coronary arteries and cardiac function without heart rate control: a technical note.
MedLine Citation:
PMID:  20407896     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To describe prospective ECG-triggered dual-source CT dual-step pulsing (pECG(dual_step)) for evaluation of coronary arteries and cardiac function.
METHODS: Fifty-one consecutive patients pre- or post-cardiovascular surgery were examined with adaptive sequential tube current modulated (pECG(dual-step)) 128-slice dual-source CT without heart rate control (main padding window: 40% RR interval >65 bpm/70% RR interval <65 bpm). Image quality of coronary arteries was graded (4-point scale), and cardiac function was evaluated.
RESULTS: Mean HR was 68 bpm. Thirty-seven patients were in stable sinus rhythm (SR); 14 had arrhythmia. Image quality of coronary arteries was diagnostic in 804/816 (98%) of segments. The number of non-diagnostic segments was higher in patients with arrhythmia as compared to those in SR (4% vs. 0.5%; p = 0.01), and there were fewer segments with excellent image quality (79% vs. 94%; p < 0.001) and more segments with impaired image quality (p < 0.001 and p = 0.002). Global and regional LV function could be evaluated in 41 (80%) and 47 (92%) patients, and valvular function in 48 (94%). In 11/14 of patients with arrhythmia, the second step switched to full mAs, increasing radiation exposure to 8.6 mAs (p < 0.001). The average radiation dose was 3.8 mSv (range, 1.7-7.9) in patients in SR.
CONCLUSION: pECG(dual-step)128-slice DSCT is feasible for the evaluation of coronary arteries and cardiac function without heart rate control in patients in stable sinus rhythm at a low radiation dose.
Authors:
Gudrun Feuchtner; Robert Goetti; Andrè Plass; Stephan Baumueller; Paul Stolzmann; Hans Scheffel; Monika Wieser; Borut Marincek; Hatem Alkadhi; Sebastian Leschka
Related Documents :
23528026 - Safety and efficacy of intense antithrombotic treatment and percutaneous coronary inter...
24002986 - Strategies to reduce time delays in patients with acute coronary heart disease treated ...
23223776 - Plasma catestatin level in patients with acute myocardial infarction and its correlatio...
24773646 - Myocardial perfusion spect in right bundle branch block and left anterior hemiblock.
19074676 - Endostatin and angiostatin are increased in diabetic patients with coronary artery dise...
20371876 - Effects of electrical heterogeneity on transmural reentry during acute global ischemia.
Publication Detail:
Type:  Journal Article     Date:  2010-04-21
Journal Detail:
Title:  European radiology     Volume:  20     ISSN:  1432-1084     ISO Abbreviation:  Eur Radiol     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-08-03     Completed Date:  2011-01-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9114774     Medline TA:  Eur Radiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  2092-9     Citation Subset:  IM    
Affiliation:
Institute of Diagnostic Radiology, University Hospital Zurich, Zurich, Switzerland. gudrun.feuchtner@i-med.ac.at
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Aged, 80 and over
Cardiac-Gated Imaging Techniques / methods*
Coronary Angiography / methods*
Coronary Artery Disease / complications*,  radiography*
Feasibility Studies
Female
Heart Rate
Humans
Male
Middle Aged
Radiographic Image Enhancement / methods
Radiographic Image Interpretation, Computer-Assisted / methods
Radiography, Dual-Energy Scanned Projection / methods
Reproducibility of Results
Sensitivity and Specificity
Tomography, X-Ray Computed / methods*
Ventricular Dysfunction, Left / etiology*,  radiography*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Pharmacokinetics and pharmacodynamics of AZD6244 (ARRY-142886) in tumor-bearing nude mice.
Next Document:  Prevalence and functional impact of lipomatous metaplasia in scar tissue following myocardial infarc...