講演抄録/キーワード |
講演名 |
2009-01-19 14:35
Automatic Lung Nodule Registration in Serial CT Scans Hyun Hee Jo・○Helen Hong(Seoul Women's Univ.)・Jin Mo Goo・Chang Min Park(Seoul National Univ. Hospital) MI2008-69 |
抄録 |
(和) |
To identify corresponding pulmonary nodules in serial CT scans for interval change analysis, we propose a multi-stage registration technique. Our method is composed of two main steps. First, Gross translational mismatch is corrected by the coronal and sagittal MIPs-based rigid registration. These MIP images contain a rib structure which has the highest intensity region of the chest. Second, a nodule template in initial CT scans and a search volume in follow-up CT scans are defined respectively. The template matching is performed by searching for the maximum normalized cross-correlation between the nodule template and the candidate search volumes. For fast search, gray thresholding and multi-resolution technique is applied to the search volume. As the experimental results, the hitting rate of sixty nine pulmonary nodules in fifty serial chest CT scans was 98.5% and the total processing time per data was 3.3 seconds on average. |
(英) |
To identify corresponding pulmonary nodules in serial CT scans for interval change analysis, we propose a multi-stage registration technique. Our method is composed of two main steps. First, Gross translational mismatch is corrected by the coronal and sagittal MIPs-based rigid registration. These MIP images contain a rib structure which has the highest intensity region of the chest. Second, a nodule template in initial CT scans and a search volume in follow-up CT scans are defined respectively. The template matching is performed by searching for the maximum normalized cross-correlation between the nodule template and the candidate search volumes. For fast search, gray thresholding and multi-resolution technique is applied to the search volume. As the experimental results, the hitting rate of sixty nine pulmonary nodules in fifty serial chest CT scans was 98.5% and the total processing time per data was 3.3 seconds on average. |
キーワード |
(和) |
Computed Tomography / Lung Nodule / Rigid Registration / Coronal and Sagittal Maximum Intensity Projections / Template Matching / / / |
(英) |
Computed Tomography / Lung Nodule / Rigid Registration / Coronal and Sagittal Maximum Intensity Projections / Template Matching / / / |
文献情報 |
信学技報, vol. 108, no. 385, MI2008-69, pp. 49-50, 2009年1月. |
資料番号 |
MI2008-69 |
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 |
MI2008-69 |