Method and apparatus for expanding the use of existing computer-aided detection code
First Claim
Patent Images
1. A system to analyze a medical image obtained using a first imaging mechanism, the system comprising an automated detector to detect abnormalities, the automated detector comprising:
- automated detector code designed to detect abnormalities, the automated detector code trained using images obtained from a second imaging mechanism, the second imaging mechanism different than the first imaging mechanism used to obtain the medical image with respect to at least one of contrast response and dynamic range; and
a transform mapper to transform the medical image to have a similar contrast response and dynamic range to-images obtained with the second imaging mechanism, such that the automated detector code is applicable to images obtained with the first imaging mechanism.
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Abstract
A method and apparatus for analyzing a medical image obtained from one of a plurality of digital modalities, the method comprising transforming or mapping the initial medical image to create a uniform contrast response and appearance regardless of the original modality of the image.
46 Citations
21 Claims
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1. A system to analyze a medical image obtained using a first imaging mechanism, the system comprising an automated detector to detect abnormalities, the automated detector comprising:
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automated detector code designed to detect abnormalities, the automated detector code trained using images obtained from a second imaging mechanism, the second imaging mechanism different than the first imaging mechanism used to obtain the medical image with respect to at least one of contrast response and dynamic range; and a transform mapper to transform the medical image to have a similar contrast response and dynamic range to-images obtained with the second imaging mechanism, such that the automated detector code is applicable to images obtained with the first imaging mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system to analyze medical images, the system convertible from a digitized film based system to a digitally acquired image based system, the system comprising:
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a transform mapper to transform a digitally acquired image to have a contrast response and dynamic range similar to that of a standard canonical form digitized film-based image; and computer aided diagnosis (CAD) code to detect abnormalities in the transformed digitally acquired image, the CAD code having been trained using standard canonical form digitized film based images, such that the CAD code is applicable to digitally acquired images without retraining. - View Dependent Claims (11, 12, 13, 14)
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15. An apparatus for generating a transform table to convert medical images from a first format to a standard canonical format comprising:
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an image acquisition system to acquire an image in the first format with a calibration design; a step identifier to identify pixel values at various exposure levels in the image; a mapper to map the pixel values of the image against corresponding pixel values in the standard canonical format; and a table generator to generate a lookup table for converting pixel values from the first format to the standard canonical format, the look-up table used to transform the medical image in the first format to have a similar contrast response and dynamic range to-images in the standard canonical format, such that automated detector code is applicable to images obtained in the first format. - View Dependent Claims (16, 17)
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18. A method to analyze medical images from a variety of sources, the method comprising:
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converting a medical image acquired by one of the variety of sources to have a contrast response and dynamic range similar to that of a standard canonical form image using a lookup table; and processing the converted medical image using computer aided diagnosis (CAD) code to detect abnormalities, the CAD code trained using standard canonical form images the CAD code being applicable to said medical image acquired by one of the variety of sources without retraining. - View Dependent Claims (19, 20, 21)
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Specification