TY - GEN
T1 - Accuracy improvement for analysis of emphysema by lung lobe segmentation
AU - Neda, Kazuaki
AU - Tanaka, Toshiyuki
AU - Chubachi, Shotaro
AU - Sugiura, Hiroaki
PY - 2011/1/1
Y1 - 2011/1/1
N2 - Emphysema is a kind of obstructive lung disease, and the number of patients is increasing in recent years. The increase of the number of patients cause the increase of burden of physician, so computer aided diagnosis is strongly required and many researchers have been involved. In this study, we introduce a method of lung lobe segmentation. We incorporated this segmentation method into discriminant system of Emphysem and aimed at reducing false negative rate. To segment lobes, we emphasize the rarefied regions of the vessel by projecting an image to the sagittal plane, and applied basic techniques of image processing. Lastly, we carried out discriminant analysis based on the Mahalanobis's generalized distance. As a result, there was a reduction of 18.7% false-negative rate and improvement of 11.2% determining rate of positive compared to the conventional segmentation that uses only information of height.
AB - Emphysema is a kind of obstructive lung disease, and the number of patients is increasing in recent years. The increase of the number of patients cause the increase of burden of physician, so computer aided diagnosis is strongly required and many researchers have been involved. In this study, we introduce a method of lung lobe segmentation. We incorporated this segmentation method into discriminant system of Emphysem and aimed at reducing false negative rate. To segment lobes, we emphasize the rarefied regions of the vessel by projecting an image to the sagittal plane, and applied basic techniques of image processing. Lastly, we carried out discriminant analysis based on the Mahalanobis's generalized distance. As a result, there was a reduction of 18.7% false-negative rate and improvement of 11.2% determining rate of positive compared to the conventional segmentation that uses only information of height.
KW - CT image
KW - Emphysema
KW - Lung Lobe Segmentation
UR - http://www.scopus.com/inward/record.url?scp=81255144422&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=81255144422&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:81255144422
SN - 9784907764395
T3 - Proceedings of the SICE Annual Conference
SP - 1498
EP - 1500
BT - SICE 2011 - SICE Annual Conference 2011, Final Program and Abstracts
PB - Society of Instrument and Control Engineers (SICE)
T2 - 50th Annual Conference on Society of Instrument and Control Engineers, SICE 2011
Y2 - 13 September 2011 through 18 September 2011
ER -