MICCAI 2021 Daily – Thursday

In laparoscopy , surgeons often have only partial views of the liver because of its size and proximity to the endoscope. This makes it difficult to keep track of inner structures, such as tumors and vessels. By using augmented reality , it is possible for surgeons to see the anatomy of these inner structures to perform accurate resections and avoid situations that can cause hemorrhages or other issues. Previous works in this field have made use of expensive materials not usually found in surgery rooms, such as stereo endoscopes or tracking devices in order to localize the camera in the laparoscopic scene. The aim of this paper and what makes it so novel is that it achieves the same thing using a monocular endoscope , which is standard in most operating rooms, so that hospitals do not need to acquire new equipment or update their systems. The team have been working with laparoscopic surgery for several years already, starting with the uterus before moving on to other organs. The liver is a special case because compared to the uterus or the kidney, which are very rigid organs, the liver is very flexible . It can also vary considerably in size and texture between patients. For example, a liver with cirrhosis has an irregular surface, which provides more information, whereas a healthy liver 8 DAILY MICCAI Thursday Oral Presentation Using Multiple Images and Contours for Deformable 3D-2D Registration of a Preoperative CT in Laparoscopic Liver Surgery Yamid Espinel is a third-year PhD student in France at Université Clermont Auvergne under the supervision of Adrien Bartoli. This year, he is presenting his first paper at MICCAI, which proposes a novel approach to the use of augmented reality to aid laparoscopic liver surgery. Yamid also has the honor of being probably the first Colombian to feature in our magazine! He speaks to us ahead of his oral presentation and poster session today.