Validation of automatic landmark identification for atlas-based segmentation for radiation treatment planning of the head-and-neck region. - Claudia Leavens; Torbjørn Vik; Heinrich Schulz; Stéphane Allaire; John J. Kim; Laura Dawson; Brian O'Sullivan; Stephen L. Breen; David A. Jaffray; Vladimir Pekar (Image Processing, 2008)