AnewapproachtoquantifythelungnodulespeculationlevelsinCT(computedtomography)imageswasproposed.Firstly,two-dimensionalimageofnodulewasgeneratedbyusingthespiralscantechnology.Secondly,thelungnodulewassegmentedinthetwo-dimensionalimageusingthedynamicprogramming.Thirdly,basedontheexpandedregionsfromthesegmentedboundary,thespeculationwassegmentedbyuseofthresholdsegmentation.Fourthly,thefeatureregionwherespeculationmayexistwasextr
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