Influence of edge enhancement applied in endoscopic systems on sharpness and noise

SignificanceFlexible endoscopes are essential for medical internal examinations. Digital endoscopes are connected to a video processor that can apply various operations to enhance the image. One of those operations is edge enhancement, which has a major impact on the perceived image quality by medical professionals. However, the specific...

Laparoscopic suturing learning curve in an open versus closed box trainer

Background The aim of this study was to examine the influence of training under direct vision prior to training with indirect vision on the learning curve of the laparoscopic suture task. Methods Novices were randomized in two groups. Group 1 performed three suturing tasks in a transparent laparoscopic box trainer under direct vision followed by...

Shaft-Guidance for Flexible Endoscopes

Flexible endoscopes (long, slender, flexible instruments with a camera and light at the distal end, having working channels to introduce flexible instruments) are used for diagnostic and therapeutic interventions inside the human digestive system and inside the abdomen. Though used for their flexibility, the flexibility of these instruments...

Visual force feedback in laparoscopic training

Background - To improve endoscopic surgical skills, an increasing number of surgical residents practice on box or virtual reality (VR) trainers. Current training is focused mainly on hand–eye coordination. Training methods that focus on applying the right amount of force are not yet available. Methods - The aim of this project is to develop a...

Requirements for the design and implementation of checklists for surgical processes

Background- The use of checklists is a promising strategy for improving patient safety in all types of surgical processes inside and outside the operating room. This article aims to provide requirements and implementation of checklists for surgical processes. Methods- The literature on checklist use in the operating room was reviewed based on...

Electronic cleansing for visualization in CT colonography

In this thesis visualization and image processing methods are proposed that solve problems that are critical to the success of CT colonography; a non-invasive method to find the precursors of colon cancer. (1) A new optimal display mode was created and (2) the segmentation of the colon is enhanced.