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Method and system for re-screening nodules in radiological images using multi-resolution processing, neural network, and image processing

  • US 6,125,194 A
  • Filed: 02/04/1998
  • Issued: 09/26/2000
  • Est. Priority Date: 02/06/1996
  • Status: Expired due to Term
First Claim
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1. A system for re-screening an abnormality such as a nodule in a radiological image, the system receiving radiological images identified as negative by previous radiological diagnostic techniques, the system comprising a detection unit comprising:

  • an image enhancement unit that uses a multi-resolution matched filtering approach to enhance contrast between any abnormalities that may be present and the image background;

    a quick selection unit that preliminarily selects a suspect abnormality and uses a pixel thresholding method; and

    a classification unit that determines a presence and a location of the abnormality and a classification score, and which identifies a false abnormality; and

    a decision making unit that selects a portion of images for further diagnostic review;

    wherein, if a radiological image analyzed by said detection unit is determined to be positive, further radiological diagnosis is performed on it to confirm the existence of a true nodule, and if a radiological image analyzed by said detection unit is determined to be negative, no further radiological diagnosis is performed on it.

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