Shigeyuki Suzuki

Surgical navigation display system using volume rendering of intraoperatively scanned CT images

As operative procedures become more complicated, simply increasing the number of devices will not facilitate such operations. It is necessary to consider the ergonomics of the operating environment, especially with regard to the provision of navigation data, the prevention of technical difficulties, and the comfort of the operating room staff. We have designed and created a data-fusion interface that enables volumetric Maximum Intensity Projection (MIP) image navigation using intra-operative mobile 3D-CT data in the OR. The 3D volumetric data reflecting a patients inner structure is directly displayed on the monitor through video images of the surgical field using a 3D optical tracking system, a ceiling-mounted articulating monitor, and a small-size video camera mounted at the back of the monitor. The system performance and accuracy was validated experimentally. This system provides a novel interface for a surgeon with volume rendering of intra-operatively scanned CT images, as opposed to preoperative images.

Data-fusion display system with volume rendering of intraoperatively scanned CT images

In this study we have designed and created a data-fusion display that has enabled volumetric MIP image navigation using intraoperative C-arm CT data in the operating room. The 3D volumetric data reflecting a patients inner structure is directly displayed on the monitor through video images of the surgical field using a 3D optical tracking system, a ceiling-mounted articulating monitor, and a small size video camera mounted at the back of the monitor. The system performance was validated in an experiment carried out in the operating room.

Tele-surgery simulation experiment of da Vinci surgery training between Japan and Thailand

Effect of the needle tip shape on fall of force after puncture in epidural anesthesia K. Naemura Æ H. Saito School of Bionics, Tokyo University of Technology, Tokyo, Japan Unisis Corporation, Tokyo, Japan

Gastrointestinal: Fine‐needle aspiration biopsy using three‐dimensional endoscopic ultrasound

Volumetric data from the 3-D EUS was reconstructed from a series of 2-D sonographicimages corresponding to positional data from the probe. These images were captured electronically by a miniatureelectromagnetic tracking sensor attached to the tip of the echoendoscope (Fig. 1). This system, therefore, allowedsimultaneous 3-D visualization throughout the scanning process (image revision rate: 15–20 times/s) and real-timeguidance during interventions.In the present study, we developed software for the 3-D EUS system to enable 3-D needle navigation for fine-needle aspiration biopsy (FNA), and elevated its accuracy with an

Collaborated surgical works (surgical planning) in virtual space with tactile sensation between Japan and Germany

Surgeons in Japan and Germany applied tele-virtual surgery and a force feedback device during a hepatectomy simulation. Using this system, surgeons in each country were able to perform various surgical maneuvers upon the same patient. They palpated abdominal skin, made electrical scalpel incisions and widened the incision line by using surgical tools in virtual space. While surgeons performed a virtual operation, the force feedback device conveyed tactile sensations. In each location, the force feedback devices and two graphic workstations of equal capability were employed. As each workstation communicated only event signals through an ISDN (64 Kb) line, it was possible to obtain real time tele-virtual surgery without a large capacity communication infrastructure.

Tele-virtual surgery with sharing tactile sensations between Japan and Germany

Reports the results of a tele-virtual surgery experiment between Japan and Germany. In this experiment, the authors tried to use a 1ch ISDN line. Participants at each location employed two graphic workstations for the surgical simulation and tele-conference. Each workstation had a force feedback device. These devices conveyed tactile sensations to the surgeons during the virtual surgical operation. A simulated hepatectomy was chosen for the experiment. Surgeons in each location palpated the patients abdominal skin, and made electrical scalpel incisions and widened the incision line by using surgical tools in virtual space. The authors conducted an experiment in which two surgeons simulated virtual surgery while sharing identical tactile sensations over a long distance. It was possible to obtain real-time tele-virtual surgery without a large capacity communication infrastructure.