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Biomedical subjects

A Rhomberg

Publications and source records attributed to A Rhomberg.

4 recordsLinked to original sources
PubMed2000

Modelling of soft tissue deformation for laparoscopic surgery simulation.

Virtual reality based surgical simulator systems offer a very elegant solution to the development of endoscopic surgical trainers. While the graphical performance of commercial systems already makes PC-based simulators viable, the real-time simulation of soft tissue deformation is still the major obstacle in developing simulators for soft-tissue surgery. The goal of the present work is to develop a framework for the full-scale, real-time, finite element simulation of elastic tissue deformation in complex systems such as the human abdomen. The key for such a development is the proper formulation of the model, the development of scalable parallel solution algorithms, and special-purpose parallel hardware. The developed techniques will be used for the implementation of a gynecological laparoscopic VR-trainer system.

Computer Simulation↗
PubMed1999

Virtual reality based surgery simulation for endoscopic gynaecology.

Virtual reality (VR) based surgical simulator systems offer very elegant possibilities to both enrich and enhance traditional education in endoscopic surgery. However, while a wide range of VR simulator systems have been proposed and realized in the past few years, most of these systems are far from able to provide a reasonably realistic surgical environment. We explore the basic approaches to the current limits of realism and ultimately seek to extend these based on our description and analysis of the most important components of a VR-based endoscopic simulator. The feasibility of the proposed techniques is demonstrated on a first modular prototype system implementing the basic algorithms for VR-training in gynaecologic laparoscopy.

Computer Graphics↗
PubMed1997

Dissociation, somatization, substance abuse, and coping in women with chronic pelvic pain.

OBJECTIVE: To examine the relationships between histories of sexual or physical abuse and current reports of dissociation, somatization, substance abuse, adaptive coping, and maladaptive coping strategies among chronic pelvic pain patients. METHODS: Using a structured interview, we assessed sexual and physical abuse and somatization. The Dissociative Experiences Scale was used to assess dissociation, and an abbreviated version of the COPE scale was employed to assess adaptive and maladaptive coping strategies as well as substance abuse. Participants included 46 women with chronic pelvic pain. RESULTS: Women with self-reported sexual or physical abuse histories were found to have significantly higher dissociation, somatization, and substance abuse scores than women without such a history. Significant positive correlations were found between reports of both dissociation and somatization with maladaptive coping strategies and among dissociation, somatization, and substance abuse. CONCLUSION: These results support the association between a positive abuse history and the high levels of dissociation, somatization, and substance abuse often noted in the chronic pelvic pain population. Findings suggest that such psychological variables are more likely to be associated with abuse than with the general medical condition. These psychological variables are conceptualized as maladaptive coping, which may be addressed as part of a biopsychosocial model of treatment for chronic pelvic pain patients.

Adaptation, Psychological↗