Search results for "virtual"
showing 10 items of 1485 documents
Artificial Versus Video-Based Immersive Virtual Surroundings: Analysis of Performance and User's Preference.
2018
Introduction. Immersive virtual reality (VR) laparoscopy simulation connects VR simulation with head-mounted displays to increase presence during VR training. The goal of the present study was the comparison of 2 different surroundings according to performance and users’ preference. Methods. With a custom immersive virtual reality laparoscopy simulator, an artificially created VR operating room (AVR) and a highly immersive VR operating room (IVR) were compared. Participants (n = 30) performed 3 tasks (peg transfer, fine dissection, and cholecystectomy) in AVR and IVR in a crossover study design. Results. No overall difference in virtual laparoscopic performance was obtained when comparing …
Telemedicine and COVID-19 pandemic: The perfect storm to mark a change in diabetes care. Results from a world-wide cross-sectional web-based survey
2021
Abstract Background Telemedicine for routine care of people with diabetes (PwD) during the COVID‐19 pandemic rapidly increased in many countries, helping to address the several barriers usually seen. Objective This study aimed to describe healthcare professionals' (HCPs) experience on telemedicine use in diabetes care and investigate the changes and challenges associated with its implementation. Methods A cross‐sectional electronic survey was distributed through the global network of JENIOUS members of ISPAD. Respondents' professional and practice profiles, clinic sizes, their country of practice, and data regarding local telemedicine practices during COVID‐19 pandemic were investigated. Re…
Virtual reality exposure and imaginal exposure in the treatment of fear of flying: a pilot study
2013
Fear of flying (FF) is an impairing psychological disorder that is extremely common in developed countries. The most effective treatment for this particular type of phobia is exposure therapy. However, there are few studies comparing imaginal exposure (IE) and virtual reality (VR) exposure for the treatment of FF. The present study compared the effectiveness of these two approaches using two manualized interventions based on the exposure technique. Patients with FF ( N = 15) were randomly assigned to either VR ( n = 7) or IE therapy ( n = 8), consisting of a total of eight sessions: two assessment sessions (pre-treatment and after the real flight) and six exposure therapy sessions, which w…
Minimally invasive cerebral cavernoma surgery using keyhole approaches - solutions for technique-related limitations.
2009
Cavernomas are often small in size and located in difficultly accessible regions. Preoperative identification of the ideal surgical approach as well as the precise intraoperative implementation of the surgical plan are of critical importance for successful surgery. While aiming for minimally invasive surgical techniques and maximally effective cavernoma resection, we envisaged that employing a combination of precise and technically sophisticated virtual reality surgery planning, modern navigation systems with augmented reality features and endoscope-assisted surgical techniques should contribute to achieve this goal. Between December 2002 and November 2005, 66 patients were operated on for …
Implementation of augmented reality in operative dentistry learning.
2017
Objective To evaluate the efficacy of augmented reality (AR) in the gaining of knowledge and skills amongst dental students in the design of cavity preparations and analyse their degree of satisfaction. Material and methods AR cavity models were prepared for use with computers and mobile devices. Forty-one students were divided into two groups (traditional teaching methods vs AR). Questionnaires were designed to evaluate knowledge and skills, with the administration of a satisfaction questionnaire for those using AR. The degree of compliance with the standards in cavity design was assessed. The Mann-Whitney U-test was used to compare knowledge and skills between the two groups, and the Wilc…
Mono-stereo-autostereo: the evolution of 3-dimensional neurosurgical planning.
2012
BACKGROUND: In the past decade, surgery planning has changed significantly. The main reason is the improvements in computer graphical rendering power and display technology, which turned the plain graphics of the mid-1990s into interactive stereoscopic objects. OBJECTIVE: To report our experiences with 2 virtual reality systems used for planning neurosurgical operations. METHODS: A series of 208 operations were planned with the Dextroscope (Bracco AMT, Singapore) requiring the use of liquid crystal display shutter glasses. The participating neurosurgeons answered a questionnaire after the planning procedure and postoperatively. In a second prospective series of 33 patients, we used an autos…
An adaptive display for the treatment of diverse trauma PTSD victims.
2009
El trastorno de estrés postraumático (TEPT) puede desarrollarse después de la exposición a un evento aterrador. Las personas que sufren de trastorno de estrés postraumático presentan hiperactividad y evitación, y experimentan síntomas que provocan angustia y deterioro en áreas de vida significativas. Los programas de comportamiento cognitivo, incluida la terapia de exposición, son actualmente el tratamiento de elección para el TEPT. Aunque estos programas son eficaces, hay margen de mejora; La utilización de la terapia de exposición por los médicos es baja y las tasas de desgaste son altas. La aplicación de nuevas tecnologías, especialmente la realidad virtual (VR), podría ayudar a superar …
Incomplete Conventional Colonoscopy: Magnetic Resonance Colonography in the Evaluation of the Proximal Colon
2005
Background and Study Aims: The purpose of this study was to evaluate dark-lumen magnetic resonance (MR) colonography prospectively in patients with incomplete conventional colonoscopy. Patients and Methods: Thirty-two patients with incomplete conventional colonoscopy underwent same-day dark-lumen MR colonography on the basis of a standard protocol. The depiction of colorectal diseases was assessed in the following colon segments: cecum, ascending colon, transverse colon, descending colon, sigmoid colon, and rectum. The reasons for incomplete colonoscopy included high-grade stenosis in 26 patients (four with occlusive cancer, 12 with fibrotic stenosis based on recurrent sigmoid diverticuliti…
Accuracy of CT colonography in the preoperative staging of colon cancer: a prospective study of 217 patients
2019
Aim The purpose of the present study was to evaluate the accuracy of computed tomography colonography (CTC) in the preoperative localization and TN staging of colon cancer. CTC can be an effective technique for preoperative evaluation of colon cancer and could facilitate the selection of high-risk patients who may benefit from neoadjuvant chemotherapy. Method This was a prospective observational study conducted at a single tertiary-care centre. It involved 217 patients (225 tumours) who had colon cancer and underwent preoperative CTC and elective colectomy. The radiologist determined the TNM stage using postprocessing software with multiplanar images and virtual colonoscopy. The following c…
Break in volition: a virtual reality study in patients with obsessive-compulsive disorder.
2013
Research in obsessive-compulsive disorder (OCD) produced inconsistent results in demonstrating an association between patients’ symptom severity and their cognitive impairments. The process involved in volition aspects of behavioral syndromes can be extensively analyzed using specific tests developed in virtual environments, more suitable to manipulate rules and possible breaks of the normal task execution with different, confusing or stopping instructions. The study involved thirty participants (15 OCD patients and 15 controls) during task execution and the relative interferences. At this purpose, the virtual version of Multiple Errands Test was used. Virtual reality setting, with a higher…