Automatic detection of the lung orientation in digital PA chest radiographs

Kie-B. Nahm

Abstract

An image processing algorithm is presented that can identify the orientation as well as the left/right side (parity) of the digitized radiographs. The orientation was found by computing the mean square deviation between the sampled gray values along the center and their best-fit linear regression relations. The parity was determined by comparing the area difference between two thresholded images of the left and the right side around the heart, which is assumed to be around the center of the image. This method was tested with 86 images with their orientations intentionally rotated. The rotation was limited to multiples of 90 degrees, as this was the way the rotation is most likely to happen in the clinical environment. We obtained positive responses for 85 out of 86 images subject to the screening.

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S-C Lo, S-L Lou, J-S Lin, M.T.Freedman, M.V.Chien, S. K.Mun, "Artificial Convolution Neural Network Tech-nique and Applications for Lung Nodule Detection", IEEE Trans. Med. Imaging. 14(4), 1995, in press
[Crossref]
S-C Lo, H-P Chan, J-S Lin, H.Li, M.T.Freedman, M.V. Chien, S.K.Mun, "Artificial Convolution Neural Network for Medical Image Pattern Recognition", Neural Net-works, 8, (1995), in press
[Crossref]
T.Matsumoto, H.Yoshimura, M.L.Giger, K.Doi, H.Mac-Mahon, S.M.Montner, T.Nakanishi, "Potential usefulness of computerized nodule detection in screening programs for lung cancer: A pilot study," Invest. Radio. 27, 471-475 (1992)
[Crossref]
H.Yoshimura, M.L.Giger, K.Doi, H.MacMahon, S.M. Montner, "Computerized scheme for detection of pul-monary nodules: Nonlinear filtering technique," Invest. Radiol, 27,124-129 (1992)
[Crossref]
S.Katsuragawa, KDoi, H.MacMaho, "Image feature ana-lysis and computer-aided diagnosis in digital radiography: Classification of normal and abnormal lungs with in-terstitial disease in chest images," Med. Phys. 16, 38-44 (1989)
[Crossref]
G.F.Powell, K.Doi, S.Katsuragawa, "Localization of inter-rib space for lung texture analysis and computer-aided di-agnosis in digital chest images," Med. Phys. 15, 581-587 (1988)
[Crossref]
S.G.Armto III, M.L.Giger, H. MacMahon, "Computerized detection of abnormal asymmetry in di-gital chest radiographs", Med. Phys. 21(11), November 1994
[Crossref]
N. Nakamori, K. Doi, V. Sabeti, H. MacMahon, "Image feature analysis and computer-aided diagnosis in digital ra-diography: Automated analysis of sizes of heart and lung in chest images" Med. Phys. 17(3), May. June 1990
[Crossref]

1995 (2)

S-C Lo, S-L Lou, J-S Lin, M.T.Freedman, M.V.Chien, S. K.Mun, "Artificial Convolution Neural Network Tech-nique and Applications for Lung Nodule Detection", IEEE Trans. Med. Imaging. 14(4), 1995, in press
[Crossref]

S-C Lo, H-P Chan, J-S Lin, H.Li, M.T.Freedman, M.V. Chien, S.K.Mun, "Artificial Convolution Neural Network for Medical Image Pattern Recognition", Neural Net-works, 8, (1995), in press
[Crossref]

1994 (1)

S.G.Armto III, M.L.Giger, H. MacMahon, "Computerized detection of abnormal asymmetry in di-gital chest radiographs", Med. Phys. 21(11), November 1994
[Crossref]

1992 (2)

T.Matsumoto, H.Yoshimura, M.L.Giger, K.Doi, H.Mac-Mahon, S.M.Montner, T.Nakanishi, "Potential usefulness of computerized nodule detection in screening programs for lung cancer: A pilot study," Invest. Radio. 27, 471-475 (1992)
[Crossref]

H.Yoshimura, M.L.Giger, K.Doi, H.MacMahon, S.M. Montner, "Computerized scheme for detection of pul-monary nodules: Nonlinear filtering technique," Invest. Radiol, 27,124-129 (1992)
[Crossref]

1990 (1)

N. Nakamori, K. Doi, V. Sabeti, H. MacMahon, "Image feature analysis and computer-aided diagnosis in digital ra-diography: Automated analysis of sizes of heart and lung in chest images" Med. Phys. 17(3), May. June 1990
[Crossref]

1989 (1)

S.Katsuragawa, KDoi, H.MacMaho, "Image feature ana-lysis and computer-aided diagnosis in digital radiography: Classification of normal and abnormal lungs with in-terstitial disease in chest images," Med. Phys. 16, 38-44 (1989)
[Crossref]

1988 (1)

G.F.Powell, K.Doi, S.Katsuragawa, "Localization of inter-rib space for lung texture analysis and computer-aided di-agnosis in digital chest images," Med. Phys. 15, 581-587 (1988)
[Crossref]

IEEE Trans. Med. imaging (1)