Abstract: The method includes the steps of obtaining atlas data in an atlas coordinate set from a computer-readable atlas of hepatic anatomical information including three orders of division and obtaining patient data in a patient coordinate set. The method further includes morphing atlas data from the atlas coordinate set to the patient coordinate set by performing a rigid registration between the at least one landmark identified in the patient coordinate set and the corresponding obtained atlas data in the atlas coordinate set and by performing a non-rigid registration of the three orders of division of the hepatic structure while maintaining the rigid registration of the at least one landmark.

Abstract: The method includes the steps of obtaining atlas data in an atlas coordinate set from a computer-readable atlas of hepatic anatomical information including three orders of division. The three orders of division include a first order separating the liver into two (right and left) hemi-livers, a second order transverse to the first order and dividing the liver into (anterior, posterior and medial) sections, and a third order (segments) transverse to the second order and approximately parallel to the first order and dividing the liver into segments. The first order of division approximately correlates to Cantlie's Line. The second order of division is approximately correlated to the portal vein. The third order of division is approximately correlated to the hepatic vein. In total, these three orders of division divide the liver into 7 segments, with the left hemiliver divided into three segments and the right hemiliver is divided into 4 segments.