Biomedical subjects

F Engel-Murke

Publications and source records attributed to F Engel-Murke.

6 recordsLinked to original sources

PubMed1998

[Teleconference and telesurgery].

Interchange of information has become possible independent of the user's place or time by modern telemedical services and opens up new dimensions for diagnostic and therapeutic procedures. For teleconferences and teleconsultations in surgery, the intraoperative high-quality transmission of live images is essential without disturbing the sterility and operation routine. The clinical specifications require special systems for broadband, stereoscopic online image transmission both intra- and inter-institutionally. Moreover, a telemedical concept integrates the communication equipment suitable for the different diagnostic and functional facilities of a clinic, a digital multimedia patient record and modules for cooperative working. These implementations are a prerequisite for extensive telesurgical interventions using navigational tools, guided instruments or autonomous roboter systems. The realization of such a comprehensive telesurgical concept (OP 2000) is presented.

Computer Communication Networks↗

PubMed1998

[Virtual operations on real patients].

The tremendous amount of available medical digital data requires media for intuitive information perception. Virtual reality (VR) presents a technique for processing the visual data from various diagnostic modalities. From a synthetic patient model, the required compact information can be generated. The patient model is the basis for planning and processing of surgical procedures. Stereoscopically visualized 3-D reconstructions of, for example, tomographic scans are used for virtual operations. Today, prototypical tools for the virtual training of certain surgical procedures are known. Possible VR applications in surgery range from the combination of virtual and real data (augmented reality) and intraoperative computer assistance (navigation) to remotely performed operations (telerobotics). In particular, the optimization of the man-machine interface to integrate VR applications in operating theaters is required.

Computer Systems↗

PubMed1998

[Telecommunication in routine surgical practice].

In an internal inquiry on the use of telecommunication, 267 operations were documented. In 62 cases an interruption was necessary: 43 of them for a second opinion and 29 for a new orientation resulting from findings, and in 10 cases for both. A purely verbal communication/consultation was sufficient in 8 cases, in 29 questions an on-site demonstration was necessary to come to a decision. In the opinion of the operating surgeon, a picture transmission telecommunication system would have been helpful for solving the problem in 27 (44%) of the interruptions. Looking at the minimal invasive operations, the percentage was specially high (60%). We think that in future telecommunication systems can be used for time saving in operating rooms and on a long-term basis contribute to cost cutting and quality improvement in surgical routine.

Forecasting↗

PubMed1997

[Techniques in teleconsultation].

The aim of the new developments in telemedicine is to optimize medical care by the use of new communication technologies. Teleconsultation is a basic component of telemedicine. Telepresence systems demand high-quality video transmissions and interactive communication. Comparison of the quality of the transmitted pictures demonstrates that an ISDN connection is not suitable for live video transmissions. In contrast to this the SICONET/OP 2000 communication module allows the setup of an interactive telepresence system with 3D visualization in broadcast quality.

Computer Systems↗

PubMed1993

Techniques for endoscopic and non-endoscopic intracorporeal laser applications.

This article deals with various designs of CO2 and Nd:YAG lasers currently used in surgery. It is discussed how their wavelength and beampath characteristics can be utilized in either the contact or the non-contact method to achieve specific clinical aims. These may concern endoscopic procedures, e.g. palliative tumour destruction or haemangioma or cystic membrane coagulation, or non-endoscopic procedures, as exemplified by two case reports on treatment for a congenital vascular disorder and varicosis, respectively. As there is a certain overlap of laser and high-frequency applications, their respective advantages and drawbacks are compared in detail. The main safety concern in HF surgery is that of errant currents in the patient, whereas in laser applications the main hazard is to the operators' eyes. This hazard can be safely eliminated.

Adult↗

PubMed1993

[Use of laser in vascular surgery].

The use of lasers in the field of vascular surgery concerns 3 completely different principles of application. The main field is the therapy of hemangiomas and congenital vascular diseases (CVD). The experience of the therapy of congenital diseases can be also used in the treatment of varicosis, especially in the treatment of the perforating veins. In contrast to the angioplasty, where the therapeutic aim is recanalisation of an arterial vessel, in the venous system it is the occlusion of a vessel. The thermal procedures using argon- or Nd:YAG lasers with hot tips, saphire tips or with the bare fiber are no longer relevant. Only photoablation using pulsed lasers is able to remove calcified material. The excimer laser is currently the best known system for angioplasty. New developments, for example solid state lasers like the holmium laser, have as yet to show their advantages. A main emphasis of research should be the improvement of catheter systems since present applications are limited by those currently available catheter systems. Tissue fusion is still an experimental procedure. There is a lot of basic research to be done to establish this procedure in the clinical routine.

Angioplasty, Laser↗