Regional mammogram registration technique for automated analysis of interval changes of breast lesions
S. Sanjay‐Gopal, Heang‐Ping Chan, Nicholas Petrick, Todd E. Wilson, Berkman Sahiner, Mark A. Helvie, Mitchell M. Goodsitt · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1998
A reliable and accurate registration technique is a critical requirement for computerized analysis of temporal changes of suspicious lesions in mammograms. Temporal mammographic changes manifest as `neodensities' and may, sometimes, be the only finding carcinoma. Because of the elasticity of the breast tissue, the absence of obvious landmarks, and the large variability in the relative position of the breast tissue projected on to the mammogram from one examination to the other, conventional registration techniques are not applicable to registration of breast images. We are developing an automated regional registration technique to simulate the method used by radiologists for identifying corresponding lesions on mammograms.