講演抄録/キーワード |
講演名 |
2009-01-20 17:05
3次元胸部CT像からの肺血管領域抽出とその結節影過抽出領域削減への応用 ○陳 斌・内藤英智(名大)・北坂孝幸(愛知工大)・森 健策・末永康仁(名大)・本間裕敏(札幌医科大)・高畠博嗣(札幌南三条病院)・森 雅樹(札幌厚生病院)・名取 博(恵和会西岡病院) MI2008-127 |
抄録 |
(和) |
In this paper, we propose a novel approach to extract pulmonary vessels. Also we present its application to reduce the number of false positive (FP) regions by subtracting vessel regions from nodule candidate regions in an existing nodule detection method. We use a line structure enhancement filter and a blob structure enhancement filter based on Hessian matrix to emphasize the vessel-like regions and blob-like regions, respectively. Their output values are used to construct a speed function of the Level-set method. The fast marching algorithm, which is one of Level-set segmentation methods, uses this speed function to extracts the blood vessel region with suppressing extraction of the nodules by propagating its front to vessel-like regions. A quantitative performance evaluation of the vessel extraction method was performed by reduction rate of FPs. The result shows the proposed method can reduce the numbers of false positives occurred in our previous nodule detection method by $80\%$. |
(英) |
In this paper, we propose a novel approach to extract pulmonary vessels. Also we present its application to reduce the number of false positive (FP) regions by subtracting vessel regions from nodule candidate regions in an existing nodule detection method. We use a line structure enhancement filter and a blob structure enhancement filter based on Hessian matrix to emphasize the vessel-like regions and blob-like regions, respectively. Their output values are used to construct a speed function of the Level-set method. The fast marching algorithm, which is one of Level-set segmentation methods, uses this speed function to extracts the blood vessel region with suppressing extraction of the nodules by propagating its front to vessel-like regions. A quantitative performance evaluation of the vessel extraction method was performed by reduction rate of FPs. The result shows the proposed method can reduce the numbers of false positives occurred in our previous nodule detection method by $80\%$. |
キーワード |
(和) |
/ / / / / / / |
(英) |
vessel extraction / structure enhancement filter / speed function / false positive reduction / / / / |
文献情報 |
信学技報, vol. 108, no. 385, MI2008-127, pp. 305-310, 2009年1月. |
資料番号 |
MI2008-127 |
発行日 |
2009-01-12 (MI) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
MI2008-127 |