Improving Nodule Detection in Chest CT Images Using a Cylindrical Filter Based on the Anatomical Structure of the Lung
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- IKEYA Ai
- Graduate School of Health Sciences, Fujita Health University
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- TERAMOTO Atsushi
- Graduate School of Health Sciences, Fujita Health University
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- HARA Takeshi
- Graduate School of Medicine, Gifu University
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- FUJITA Hiroshi
- Graduate School of Medicine, Gifu University
Bibliographic Information
- Other Title
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- 円筒型フィルタと肺の構造解析による胸部CT画像からの結節検出
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Description
In a previous study, we developed a cylindrical filter for the detection of lung nodules in chest CT images. However, the detection rate of this method is reduced when nodules are adjacent to or overlap blood vessels or bronchi. The main objective of the present study was to develop a novel technique for improving the nodule detection capabilities of our method based on the anatomical structure of the bronchi and blood vessels obtained from CT images. In the proposed method, chest CT images are divided into a region consisting of normal lung structures (bronchi and blood vessels) and another region. Then, cylindrical filters with different characteristics are applied to the two regions. In order to evaluate the effectiveness of this method, the proposed method and the conventional method were applied to chest CT images, and their nodule detection capabilities were compared. The results showed that the true positive rate of the conventional method was 0.72, whereas that of the proposed method was 0.79. The number of false positives per case was 4.19 for both methods. These results indicate that the proposed method may be useful for improving nodule detection performance.
Journal
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- Medical Imaging Technology
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Medical Imaging Technology 30 (5), 293-297, 2012
The Japanese Society of Medical Imaging Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001204652330240
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- NII Article ID
- 130002573591
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- ISSN
- 21853193
- 0288450X
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed