| Cranial CT with 64-, 16-, 4- and single-slice CT systems-comparison of image quality and posterior fossa artifacts in routine brain imaging with standard protocols. | |
| | |
MedLine Citation:
|
PMID: 18389247 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Posterior fossa artifacts constitute a characteristic limitation of cranial CT. To identify practical benefits and drawbacks of newer CT systems with reduced collimation in routine cranial imaging, we aimed to investigate image quality, posterior fossa artifacts and parenchymal delineation in non-enhanced CT (NECT) with 1-, 4-, 16- and 64-slice scanners using standard scan protocols. We prospectively enrolled 25 consecutive patients undergoing NECT on a 64-slice CT. Three groups with 25 patients having undergone NECT on 1-, 4- and 16-slice CT machines were matched regarding age and sex. Standard routine CT parameters were used on each CT system with helical acquisition in the posterior fossa; the parameters varied regarding collimation and radiation dose. Three blinded readers independently assessed the cases regarding image quality, infra- and supratentorial artifacts and delineation of brain parenchymal structures on a five-point ordinal scale. Reading orders were randomized. A proportional odds model that accounted for the correlated nature of the data was fit using generalized estimating equations. Posterior fossa artifacts were significantly reduced, and the delineation of infratentorial brain structures was significantly improved with the thinner collimation used for the newer CT systems (p<0.001). No significant differences were observed for midbrain structures (p>0.5). The thinner collimation available on modern CT systems leads to reduced posterior fossa artifacts and to a better delineation of brain parenchyma in the posterior fossa. |
| | |
Authors:
|
Birgit Ertl-Wagner; Lara Eftimov; Jeffrey Blume; Roland Bruening; Christoph Becker; Jean Cormack; Hartmut Brueckmann; Maximilian Reiser |
Related Documents
:
|
11000177 - Diagnosing bile duct stones: comparison of unenhanced helical ct, oral contrast-enhance... 17619097 - Localized castleman disease in retroperitoneum: newly discovered features by multi-dete... 12719907 - Multidetector-row helical ct and advanced postprocessing techniques for the evaluation ... 9843287 - Optimizing contrast enhancement during helical ct of the liver: a comparison of two bol... 15179067 - Concurrent sino-orbital aspergillosis and cerebral nocardiosis. 6609547 - Fluid levels in aneurysmal bone cysts: a ct feature. |
Publication Detail:
|
Type: Comparative Study; Evaluation Studies; Journal Article Date: 2008-04-04 |
Journal Detail:
|
Title: European radiology Volume: 18 ISSN: 0938-7994 ISO Abbreviation: Eur Radiol Publication Date: 2008 Aug |
Date Detail:
|
Created Date: 2008-07-08 Completed Date: 2008-12-30 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9114774 Medline TA: Eur Radiol Country: Germany |
Other Details:
|
Languages: eng Pagination: 1720-6 Citation Subset: IM |
Affiliation:
|
Institute of Clinical Radiology, University of Munich-Campus Grosshadern, Marchioninistr. 15, 81377, Munich, Germany. B.Ertl-Wagner@t-online.de |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Artifacts* Brain / radiography* Equipment Design Equipment Failure Analysis Female Humans Image Enhancement / instrumentation* Male Middle Aged Reproducibility of Results Sensitivity and Specificity Tomography, X-Ray Computed / instrumentation*, methods |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Proton MR spectroscopy of cerebral gliomas at 3 T: spatial heterogeneity, and tumour grade and exten...
Next Document: CT colonography: computer-aided detection of morphologically flat T1 colonic carcinoma.