Image analysis – Applications – Biomedical applications
Reexamination Certificate
1998-07-24
2001-05-29
Bella, Matthew C. (Department: 2721)
Image analysis
Applications
Biomedical applications
C382S131000, C382S128000
Reexamination Certificate
active
06240201
ABSTRACT:
SUMMARY OF THE INVENTION
It is an object of the present invention to provide improved automated lung nodule detection using soft-tissue and standard chest images.
It is another object of the present invention to provide an improved CAD scheme for lung nodule detection using both soft-tissue and standard chest images.
It is a further object of the present invention to provide an improved CAD scheme for lung nodule detection using soft-tissue and standard chest images, as well as the logical OR combination of the two.
These and other objects are achieved according to the present invention by providing a novel method, system and computer readable medium for computerized detection of lung abnormalities, including obtaining a standard digital chest image and a soft-tissue digital chest image; generating a first difference image from the standard digital chest image and a second difference image from the soft-tissue digital chest image; identifying candidate abnormalities in the first and second difference images; extracting from the standard digital chest image and the first difference image predetermined first features of each of the candidate abnormalities identified in the first difference image; extracting from the soft-tissue digital chest image and the second difference images predetermined second features of each of the candidate abnormalities identified in the second difference image; analyzing the extracted first features and the extracted second features to identify and eliminate false positive candidate abnormalities respectively corresponding thereto; performing a logical OR operation of the candidate abnormalities derived respectively from the first and second difference images and remaining after the elimination of the false positive candidate abnormalities; and outputting a signal indicative of a result of performing the logical OR operation.
The present invention similarly includes a computer readable medium storing program instructions by which the method of the invention can be performed when the stored program instructions are appropriately loaded into a computer, and a system for implementing the method of the invention.
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Doi Kunio
MacMahon Heber
Xu Xin-Wei
ARCH Development Corporation
Bella Matthew C.
Choobin M. B.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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