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ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

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4. RESULTS:<br />

n 1<br />

<br />

2<br />

x f ( x ; )<br />

(10)<br />

k 1 i k 1<br />

i k<br />

n<br />

k 1<br />

i1<br />

We applied the proposed algorithm to BIRADS database of breast images. Tests are<br />

done in images with different densities of tissue, fatty, dense or granular. For each<br />

image, image segmentation done by any region of tissue based on segmentation<br />

algorithm, and the segmented mass is compared to segmentation carried by an expert<br />

radiologist by measuring Dice coefficient. Results are shown in Fig1, Fig 2 and Fig 3.<br />

Fig1. Dice coef. mdb004, line1: ROI image, line2:segmentation by GMM by any region<br />

of tissue (left: 96.92%, central: 97.30%, right:97.60%), line3:segmentation by expert.

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