Anthony P. Reeves Antoni B. Chan David F. Yankelevitz Claudia I. Henschke Bryan Kressler William J. Kostis 435-450 2006 25 IEEE Trans. Med. Imaging 4 http://doi.ieeecomputersociety.org/10.1109/TMI.2006.871548 db/journals/tmi/tmi25.html#ReevesCYHKK06