Oliver Weinheimer Tobias Achenbach Christian Buschsiewke Claus Peter Heussel Thomas Uthmann Hans-Ulrich Kauczor Quantification and Characterization of Pulmonary Emphysema in Multislice-CT. 75-82 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2868&spage=75 2003 conf/ismda/2003 ISMDA db/conf/ismda/ismda2003.html#WeinheimerABHUK03