| Comparing accuracy of cerebral aneurysm size measurements from three routine investigations: computed tomography, magnetic resonance imaging, and digital subtraction angiography. | |
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MedLine Citation:
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PMID: 21030800 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Modern imaging technologies, such as computed tomography (CT) angiography, magnetic resonance (MR) angiography, and digital subtraction (DS) angiography are widely used for pretreatment evaluation of cerebral aneurysms, but the relative accuracies of these modalities are unclear. This study compared the measurements of aneurysm neck and dome height and width on CT angiography, time-of-flight (TOF)-MR angiography, and DS angiography using a three-dimensional workstation. An elastic model of a side-wall aneurysm was connected to an artificial heart pulsatile circuit system. The aneurysm model was prepared using a silicone membrane of 0.6-mm thickness under normal physiological circulation parameters. Using this aneurysm model, three-dimensional TOF-MR angiography, contrast-enhanced CT angiography, and DS angiography were performed. Source images were post-processed on a dedicated workstation to calculate the aneurysm size. DS angiography measurements were found to be the most accurate. In contrast, aneurysm neck sizes measured on CT angiography were significantly wider than actual values (p < 0.05) and aneurysm heights measured using TOF-MR angiography were significantly lower than actual values (p < 0.01). In this in-vitro model, at least one aneurysm dimension measured with CT angiography and with TOF-MR angiography differed significantly from actual values. Aneurysm neck width markedly affects therapeutic planning, as a wide neck requires craniotomy or endovascular treatment using an adjunctive device, so inaccuracies should be considered when aneurysm treatment is planned using modern methods of visualization. |
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Authors:
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Hiroyuki Takao; Yuichi Murayama; Toshihiro Ishibashi; Takayuki Saguchi; Masaki Ebara; Hideki Arakawa; Koreaki Irie; Kiyotaka Iwasaki; Mitsuo Umezu; Toshiaki Abe |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Neurologia medico-chirurgica Volume: 50 ISSN: 1349-8029 ISO Abbreviation: Neurol. Med. Chir. (Tokyo) Publication Date: 2010 |
Date Detail:
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Created Date: 2010-10-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0400775 Medline TA: Neurol Med Chir (Tokyo) Country: Japan |
Other Details:
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Languages: eng Pagination: 893-9 Citation Subset: IM |
Affiliation:
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Division of Endovascular Neurosurgery and Neurosurgery, Jikei University School of Medicine, Tokyo, Japan. takao@jikei.ac.jp |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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