Computer-Aided Diagnosis of Intracranial Aneurysms in MRA Images with Case-Based Reasoning(Biological Engineering)
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概要
- 論文の詳細を見る
Finding intracranial aneurysms plays a key role in preventing serious cerebral diseases such as subarachnoid hemorrhage. For detection of aneurysms, magnetic resonance angiography (MRA) can provide detailed images of arteries non-invasively. However, because over 100 MRA images per subject are required to cover the entire cerebrum, image diagnosis using MRA is very time-consuming and labor-intensive. This article presents a computer-aided diagnosis (CAD) system for finding aneurysms with MRA images. The principal components are identification of aneurysm candidates (=ROIs; regions of interest) from MRA images and estimation of a fuzzy degree for each aneurysm candidate based on a case-based reasoning (CBR). The fuzzy degree indicates whether a candidate is true aneurysm. Our system presents users with a limited number of ROIs that have been sorted in order of fuzzy degree. Thus, this system can decrease the time and the labor required for detecting aneurysms. Experimental results using phantoms indicate that the system can detect all aneurysms at branches of arteries and all saccular aneurysms produced by dilation of a straight artery in 1 direction perpendicular to the principal axis. In a clinical evaluation, performance in finding aneurysms and estimating the fuzzy degree was examined by applying the system to 16 subjects with a total of 19 aneurysms. The experimental results indicate that this CAD system detected all aneurysms except a fusiform aneurysm, and gave high fuzzy degrees and high priorities for the detected aneurysms.
- 社団法人電子情報通信学会の論文
- 2006-01-01
著者
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Kobashi S
Univ. Hyogo Himeji‐shi Jpn
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HATA Yutaka
Graduate School of Engineering, University of Hyogo
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KONDO Katsuya
Graduate School of Engineering, University of Hyogo
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KOBASHI Syoji
University of Hyogo
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KONDO Katsuya
University of Hyogo
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HATA Yutaka
University of Hyogo
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Hata Y
Graduate School Of Engineering University Of Hyogo
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Kondo K
Graduate School Of Engineering University Of Hyogo
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Kondo K
The Faculty Of Science And Technology Keio University
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Kobashi Syoji
Graduate School Of Engineering Himeji Institute Of Technology
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Hata Y
Himeji Institute Of Technology Japan
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