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Proceedings Paper

Patient-specific port placement for laparoscopic surgery using atlas-based registration
Author(s): Andinet Enquobahrie; Vikas Shivaprabhu; Stephen Aylward; Julien Finet; Kevin Cleary; Ron Alterovitz
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Paper Abstract

Laparoscopic surgery is a minimally invasive surgical approach, in which abdominal surgical procedures are performed through trocars via small incisions. Patients benefit by reduced postoperative pain, shortened hospital stays, improved cosmetic results, and faster recovery times. Optimal port placement can improve surgeon dexterity and avoid the need to move the trocars, which would cause unnecessary trauma to the patient. We are building an intuitive open source visualization system to help surgeons identify ports. Our methodology is based on an intuitive port placement visualization module and atlas-based registration algorithm to transfer port locations to individual patients. The methodology follows three steps:1) Use a port placement visualization module to manually place ports in an abdominal organ atlas. This step generates port-augmented abdominal atlas. This is done only once for a given patient population. 2) Register the atlas data with the patient CT data, to transfer the prescribed ports to the individual patient 3) Review and adjust the transferred port locations using the port placement visualization module. Tool maneuverability and target reachability can be tested using the visualization system. Our methodology would decrease the amount of physician input necessary to optimize port placement for each patient case. In a follow up work, we plan to use the transferred ports as starting point for further optimization of the port locations by formulating a cost function that will take into account factors such as tool dexterity and likelihood of collision between instruments.

Paper Details

Date Published: 14 March 2013
PDF: 6 pages
Proc. SPIE 8671, Medical Imaging 2013: Image-Guided Procedures, Robotic Interventions, and Modeling, 86711M (14 March 2013); doi: 10.1117/12.2006461
Show Author Affiliations
Andinet Enquobahrie, Kitware, Inc. (United States)
Vikas Shivaprabhu, Kitware, Inc. (United States)
Stephen Aylward, Kitware, Inc. (United States)
Julien Finet, Kitware, Inc. (United States)
Kevin Cleary, Children's National Medical Ctr. (United States)
Ron Alterovitz, Univ. of North Carolina at Chapel Hill (United States)


Published in SPIE Proceedings Vol. 8671:
Medical Imaging 2013: Image-Guided Procedures, Robotic Interventions, and Modeling
David R. Holmes; Ziv R. Yaniv, Editor(s)

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