01803nas a2200205   4500008004100000245010800041210006900149260000900218300001400227490000600241520109000247653002201337653002901359653002901388653001901417100001701436700001201453700001501465856011701480       2010                        eng d00aExtraction of features for diagnosing pneumoconiosis from chest radiographs obtained with a CCD scanner0 aExtraction of features for diagnosing pneumoconiosis from chest   c2010  a147 - 1520 v83 aThis paper presents a computer-aided diagnosis for pneumoconiosis radiographs obtained with a common CCD scanner. Since the existing diagnosis systems for pneumo coniosis extract abnormalities of pneumoconiosis from im ages obtained with a special scanner which can appropri-ately-apply-for-chest- radiographs,-it-is-difficult-toapply the systems to images obtained with a CCD scanner due to un clear shadow and the systems are not practical for medical doctors due to high costs. In the unclear images, the ab normal levels of pneumoconiosis could depend on density distribution in each of intercostal and rib areas. Therefore, the proposed method measures the abnormalities by extract ing characteristics of the distribution in the areas. Besides, using the-abnormalities,-the-proposed-method-classifies-the-imagesinto the three categories of pneumoconiosis. Exper imental results-of-the-classifications-for- 51-right-lung-im-ages-including 6 pneumoconiosis images have shown that the proposed abnormalities are well extracted according to the standards of pneumoconiosis categories.10aChest radiographs10aComputer-aided diagnosis10aMedical image processing10aPneumoconiosis1 aNakamura, M.1 aAbe, K.1 aMinami, M.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-79960677554&partnerID=40&md5=95072c54ff5968028fd8e2985166c663