@conference {de2005pull, title = {Pull-Push Level Sets: A new term to encode prior knowledge for the segmentation of teeth images}, booktitle = {Medical Imaging}, year = {2005}, pages = {598{\textendash}605}, publisher = {International Society for Optics and Photonics}, organization = {International Society for Optics and Photonics}, author = {Rodrigo de Luis-Garc{\'\i}a and Raul San Jose-Estepar and Carlos Alberola-Lopez} }