| Thoraco-abdominal high-pitch dual-source CT angiography: Experimental evaluation of injection protocols with an anatomical human vascular phantom. | |
| | |
MedLine Citation:
|
PMID: 22226854 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
OBJECTIVE: To experimentally evaluate three different contrast injection protocols at thoraco-abdominal high-pitch dual-source computed tomography angiography (CTA), with regard to level and homogeneity of vascular enhancement at different cardiac outputs. MATERIALS AND METHODS: A uniphasic, a biphasic as well as an individually tailored contrast protocol were tested using a human vascular phantom. Each protocol was scanned at 5 different cardiac outputs (3-5L/min, steps of 0.5L/min) using an extracorporeal cardiac pump. Vascular enhancement of the thoraco-abdominal aorta was measured every 5cm. Overall mean enhancement of each protocol and mean enhancement for each cardiac output within each protocol were calculated. Enhancement homogeneity along the z-axis was evaluated for each cardiac output and protocol. RESULTS: Overall mean enhancement was significantly higher in the uniphasic than in the other two protocols (all p<.05), whereas the difference between the biphasic and tailored protocol was not significant (p=.76). Mean enhancement among each of the 5 cardiac outputs within each protocol was significantly different (all p<.05). Only within the tailored protocol mean enhancement differed not significantly at cardiac outputs of 3.5L/min vs. 5L/min (484±25HU vs. 476±19HU, p=.14) and 4 vs. 5L/min (443±49HU vs. 476±19HU, p=.05). Both, uniphasic and tailored protocol yielded homogenous enhancement at all cardiac outputs, whereas the biphasic protocol failed to achieve homogenous enhancement. CONCLUSION: This phantom study suggests that diagnostic and homogenous enhancement at thoraco-abdominal high-pitch dual-source CTA is feasible with either a uniphasic or an individually tailored contrast protocol. |
| | |
Authors:
|
Gilbert D Puippe; Anna Winklehner; Peter Hasenclever; André Plass; Thomas Frauenfelder; Stephan Baumueller |
Related Documents
:
|
21050624 - Effectiveness and acceptability of a computerized decision support system using modifie... 22228794 - The use of 18f-fdg pet in the diagnosis of cardiac sarcoidosis: a systematic review and... 16418244 - Pneumoconiosis: comparison of imaging and pathologic findings. 10397104 - Evolution of ct findings in patients with cystic fibrosis. 6647854 - Myositis ossificans circumscripta: computed tomographic diagnosis. 10825524 - Skull metastasis of hepatocellular carcinoma associated with acute epidural hematoma: a... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-1-6 |
Journal Detail:
|
Title: European journal of radiology Volume: - ISSN: 1872-7727 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
|
Created Date: 2012-1-9 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8106411 Medline TA: Eur J Radiol Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
|
Institute for Diagnostic and Interventional Radiology, University Hospital Zurich, Switzerland Raemistrasse 100, CH-8091 Zurich, Switzerland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Cranial ultrasonography and transfontanellar Doppler in premature neonates (24-32 weeks of gestation...
Next Document: The influence of passband limitation on the waveform of extracellular action potential.