I. C. Mehta Z. J. Khan R. R. Khotpal Volumetric Measurement of Heart Using PA and Lateral View of Chest Radiograph. 34-40 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3285&spage=34 2004 conf/aacc/2004 AACC db/conf/aacc/aacc2004.html#MehtaKK04