A Novel Utility of a New 3-D Hepatectomy Imaging System for Laparoscopic Liver Resection

Fumiki Kushihata, Masahide Hatano, Hitoshi Inoue, Yoshikuni Yonenaga, Akifumi Miyoshi, Taiji Toyama, Yasutsugu Takada, Nobuaki Kobayashi. Ehime University School of Medicine

Background: Setting of a cutting line based on an anatomical characteristic of the patient is essential for laparoscopic hepatectomy certain safely, but there is little navigation system and needs much time in detailed examination so far.
Purpose: We examined the utility of the operation image support system using a new 3D volume analyzer (Synapse Vincent TM) based on an MDCT image.
Method: Using this system, we can extract it based on a blood vessel chase by the region glowing law and cut the segmental resection that is portal vein supplying area in virtual hepatectomy.  We examined the following items; 
1. Time to depiction of cutting plan line
2. An excision expectation volume by the Grrison processing
3. A hepatic vein return volume (especially of Inferior Right Hepatic Vein)
4. Preoperative navigation by the virtual seeing through from liver caudally dorsal approach
Result: We were able to depict an estimated excision volume and a hepatic vein return volume precisely for all cases in a short time.
Consideration: Our new system is simple and easy, and can depict liver dissection and Grrison / the hepatic vein return volume. Furthermore, the navigation by approach especially for laparoscopic hepatectomy was extremely effective as preoperative estimation.
Prospects: Like a virtual endoscopy, we can increase safety and precision of the laparoscopic hepatectomy more by letting this system develop into intraoperative navigation system.

Session: Emerging Technology Poster
Program Number: ETP082
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