Nodule detection

Details Nodule detection Nodule detection

2004-06-17

2008-12-02

Kim, Charles (Department: 2624)

Image analysis

Applications

Biomedical applications

C382S190000, C382S260000

Reexamination Certificate

active

07460701

ABSTRACT:
A method of detecting a nodule in a three-dimensional scan image comprises calculating a three-dimensional sphericity index for each point in the scan image (310-330), applying a high sphericity threshold to the sphericity index (340) to obtain a candidate nodule region, and then performing region-growing (350) from the candidate region using a relaxed sphericity threshold to determine an extended region including less spherical parts connected to the candidate region. Optionally, spherical filtering may be applied to the image by matching the spherical filter to the extended region.

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