System and method for detecting a protrusion in a medical image

Details System and method for detecting a protrusion in a medical image System and method for detecting a protrusion in a medical image

2004-05-19

2008-05-06

Kao, Chih-Cheng G (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S901000, C382S131000, C382S199000

Reexamination Certificate

active

07369638

ABSTRACT:
A method for detecting a protrusion in a medical image includes: acquiring a medical image, wherein the medical image is of an anatomical part; segmenting the medical image; calculating a distance map of the medical image; calculating a gradient of the distance mapped medical image; and processing the gradient to detect a protrusion in the medical image. The gradient is processed by: projecting a plurality of rays from a location in the distance mapped medical image; calculating a value for each of the plurality of rays based on features of each of the plurality of rays and the gradient of the distance mapped medical image; summing and scaling the value of each of the plurality of rays; and detecting one of a sphere-like and polyp-like shape using the summed and scaled values of the plurality of rays, wherein one of the sphere-like and polyp-like shapes is the protrusion.

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Kiss Gabriel et al. “Computer Aided Diagnosis for Virtual Colonography;” XP002308817, 2001.
International Search Report for PCT/US2004/016108 mailed Jan. 18, 2005.

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