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Fig. 4 | BMC Surgery

Fig. 4

From: The segment IV approach: a useful method for achieving the critical view of safety during laparoscopic cholecystectomy in patients with anomalous bile duct

Fig. 4

a Preoperative drip infusion cholangiography CT image. The white arrow indicates the cystic duct branching off the left hepatic duct. b The imaginary diagonal line (D-line) of the segment IV of the liver (yellow arrow) was identified. c The dissection of the cystic structure proceeded along the D-line. d The critical view of safety was achieved

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