Design and Implementation of Gradient Vector Flow Snake to Detect a Reference Object in Pelvic X-Rays for Preoperative Total Hip Arthroplasty Planning Application. - W. Kristanto; Peter M. A. van Ooijen; Bertram The; H. Duifhuis; Tati Rajab Mengko; Matthijs Oudkerk (J. Digit. Imaging, 2007)

Comparison of Techniques for Correction of Magnification of Pelvic X-rays for Hip Surgery Planning. - Bertram The; Johan W. J. Kootstra; Anton H. Hosman; Nico Verdonschot; Carina L. E. Gerritsma; Ron L. Diercks (J. Digit. Imaging, 2007)