title: A CAD system for the 3D location of lesions in mammograms.
abstract: A CAD system for estimating the 3D (three-dimensional) positions of lesions found in two mammographic views is described. The system is an extension of our previous method [Comput. Vis. Image Understand. 83 (2001) 38] which finds corresponding 2D positions in different mammographic views. The method calculates curved epipolar lines by developing a simulation of breast deformation into stereo camera geometry. Using such curved epipolar lines, not only can we determine point correspondences, but can estimate the 3D location of a lesion. In this paper, we first explain the underlying principles and system organisation. The correctness of the 3D positions calculated by the system is examined using a set of breast lesions, which appear both in mammograms and in MRI data. The experimental results demonstrate the clinical promise of the CAD system.
authors.affiliation: National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba 305-8568, Japan. y.kita@aist.go.jp
authors.forename: Yasuyo
authors.initials: Y
authors.lastname: Kita
authors.forename: Eriko
authors.initials: E
authors.lastname: Tohno
authors.forename: Ralph
authors.initials: R
authors.lastname: Highnam
authors.forename: Michael
authors.initials: M
authors.lastname: Brady
mesh_terms: D000465:Algorithms; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D017076:Computer-Aided Design; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008279:Magnetic Resonance Imaging; D008327:Mammography / Q000379:methods*; D012680:Sensitivity and Specificity