| Heartbeat-related displacement of the thoracic aorta in patients with chronic aortic dissection type B: quantification by dynamic CTA. | |
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MedLine Citation:
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PMID: 18805663 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The purpose of this study was to characterize the heartbeat-related displacement of the thoracic aorta in patients with chronic aortic dissection type B (CADB). MATERIALS AND METHODS: Electrocardiogram-gated computed tomography angiography was performed during inspiratory breath-hold in 11 patients with CADB: Collimation 16 mm x 1 mm, pitch 0.2, slice thickness 1mm, reconstruction increment 0.8 mm. Multiplanar reformations were taken for 20 equidistant time instances through both ascending (AAo) and descending aorta (true lumen, DAoT; false lumen, DAoF) and the vertex of the aortic arch (VA). In-plane vessel displacement was determined by region of interest analysis. RESULTS: Mean displacement was 5.2+/-1.7 mm (AAo), 1.6+/-1.0 mm (VA), 0.9+/-0.4 mm (DAoT), and 1.1+/-0.4mm (DAoF). This indicated a significant reduction of displacement from AAo to VA and DAoT (p<0.05). The direction of displacement was anterior for AAo and cranial for VA. CONCLUSION: In CADB, the thoracic aorta undergoes a heartbeat-related displacement that exhibits an unbalanced distribution of magnitude and direction along the thoracic vessel course. Since consecutive traction forces on the aortic wall have to be assumed, these observations may have implications on pathogenesis of and treatment strategies for CADB. |
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Authors:
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Tim F Weber; Maria-Katharina Ganten; Dittmar B??ckler; Philipp Geisb??sch; Hans-Ulrich Kauczor; Hendrik von Tengg-Kobligk |
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Publication Detail:
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Type: Journal Article Date: 2008-09-20 |
Journal Detail:
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Title: European journal of radiology Volume: 72 ISSN: 1872-7727 ISO Abbreviation: Eur J Radiol Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-11-25 Completed Date: 2010-02-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8106411 Medline TA: Eur J Radiol Country: Ireland |
Other Details:
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Languages: eng Pagination: 483-8 Citation Subset: IM |
Affiliation:
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University of Heidelberg, Department of Diagnostic and Interventional Radiology, 69120 Heidelberg, Germany. tim.weber@med.uni-heidelberg.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aneurysm, Dissecting
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radiography* Angiography / methods* Aorta, Thoracic / radiography* Aortic Aneurysm / radiography* Female Heart Rate* Humans Male Middle Aged Motion Radiographic Image Interpretation, Computer-Assisted / methods* Radiography, Abdominal Radiography, Thoracic / methods Tomography, X-Ray Computed / methods* |
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