Used Mammograms Containing Masses

According to the annotations of the database, $42$ of the $322$ mammograms contains masses. Table  shows their distribution according to the tissue of the database (columns) and the shape of the lesion (rows).

Table B.2: MIAS mammograms containing masses.

		Fatty	Glandular	Dense	Total
-||--	Circumscribed	$12$	$8$	$3$	$23$
	-||--	Spiculated	$5$	$7$	$7$
	-||--	Total	$17$	$15$	$10$
-||--

The set of masses belonging to this database and used in this work (summarized in Table ), however, has only $40$ of these $42$ mammograms. This is due to our ``ground-truth'' annotations, where these $40$ mammograms were accurately manually segmented. Moreover, one of the masses classified as circumscribed by the database was classified as spiculated in the text, as the manual segmentation reflected this behaviour.