In Couinaud classification, segment IV of liver is
Segment 1 - caudate lobe, segment 4 - quadrate lobe ,.segments( 1,2,3,4) left lobe, segments (5,6,7,8)- right lobe Reference SRB edition :5 page:593 and internet
Caudate lobe
Quadrate lobe
Right lobe
Left lobe
G.I.T