introduction: fractures of the orbital floor, which are caused by various mechanisms, result in the herniation of periorbital tissue into the paranasal sinuses and its subsequent complications. early diagnosis using various techniques and reduction of fractures are necessary to preserve ocular function and esthetic. use of an endoscope has been associated with some advantages, including a decre...

This paper describes a method for camera motion estimation based on real endoscope images and CT images for an endoscope navigation system. We have developed an endoscope navigation system that shows the navigation information during an endoscope examination. In this system, we need to Out side view and estimate the real endoscope camera motion. Our method tracks the camera motion by using an i...

Endoscope is widely used in the minimally invasive surgery. However the size and distortion of endoscope images limit its use in the surgery planning and navigation. In this project, we stitch the endoscope video images up to get a large view of the knee surface, which actually enlarge the view of the surgeons thus enable them to explore the knee surface in the operation. We first correct the r...

We performed endoscopic phonosurgery in a patient with a laryngeal lesion using a prototype of the therapeutic rhino-larynx electronic endoscope connected to a video processor (Asahi Optical Co., Ltd.). This therapeutic electronic endoscope differs from the fiberoptic endoscope, because it contains an instrument channel and a miniature television camera attached to the tip of the endoscope, con...

This paper is the first discussion on the registration of intraoperative MRI and endoscope using Polaris and MRI-compatible endoscope manipulator. An endoscope has been popular in minimally invasive surgery due to its less-invasive, realtime, and fine observations in body cavity. However, because its view is so limited, it's difficult to know the surrounding structures. Intraoperative MRI has b...

BACKGROUND Endoscope has been used far less in the spinal region than in the intracranial cavity. One of the reasons is its safety and feasibility has not been established. To evaluate its safety and feasibility, we performed preliminary cadaveric study prior to clinical endoscopic intervention in the thoracic and lumbar spinal canal. METHODS The endoscope that had a directable tip with exter...

The magnetic capsule endoscope has been modified to be fixed inside the stomach and to monitor the gastric motility. This pilot trial was designed to investigate the feasibility of the magnetic capsule endoscope for monitoring gastric motility. The magnetic capsule endoscope was swallowed by the healthy volunteer and maneuvered by the external magnet on his abdomen surface inside the stomach. T...

BACKGROUND Endoscopic technique is often applied for the diagnosis of diseases affecting internal organs and image-guidance of surgical procedures. Although the endoscope has become an indispensable tool in the clinic, its utility has been limited to medical offices or operating rooms because of the large size of its ancillary devices. In addition, the basic design and imaging capability of the...