Nodule Detection In A Lung Region That's Segmented With Using Genetic Cellular Neural Networks And 3D Template Matching With Fuzzy Rule Based Thresholding
Yükleniyor...
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Korean Radiological Soc.
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Objective: The purpose of this study was to develop a new method for automated lung nodule detection in serial section CT images with using the characteristics of the 3D appearance of the nodules that distinguish themselves from the vessels. Materials and Methods: Lung nodules were detected in four steps. First, to reduce the number of region of interests (ROIs) and the computation time, the lung regions of the CTs were segmented using Genetic Cellular Neural Networks (G-CNN). Then, for each lung region, ROIs were specified with using the 8 directional search; +1 or -1 values were assigned to each voxel. The 3D ROI image was obtained by combining all the 2-Dimensional (2D) ROI images. A 3D template was created to find the nodule-like structures on the 3D ROI image. Convolution of the 3D ROI image with the proposed template strengthens the shapes that are similar to those of the template and it weakens the other ones. Finally, fuzzy rule based thresholding was applied and the ROI's were found. To test the system's efficiency, we used 16 cases with a total of 425 slices, which were taken from the Lung Image Database Consortium (LIDC) dataset. Results: The computer aided diagnosis (CAD) system achieved 100% sensitivity with 13.375 FPs per case when the nodule thickness was greater than or equal to 5.625 mm. Conclusion: Our results indicate that the detection performance of our algorithm is satisfactory, and this may well improve the performance of computeraided detection of lung nodules.
Açıklama
Anahtar Kelimeler
Computer Aided Lung Nodule Detection; ROI Specification; Genetic Algorithm; Cellular Neural Networks Fuzzy Logic; 3D Template Matching.
Kaynak
Korean Journal Of Radiology
WoS Q Değeri
Q4
Scopus Q Değeri
Q1
Cilt
9
Sayı
1
