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  • 1
    ISSN: 1600-0501
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: We developed a head-mounted display (HMD) with integrated computer-generated stereoscopic projection of target structures and integrated it into visit, a specific oral implant planning and navigation software. The HMD is equipped with two miniature computer monitors that project computer-generated graphics stereoscopically into the optical path. Its position is tracked by the navigation system's optical tracker and target structures are displayed in their true position over the operation site. In order to test this system's accuracy and spatial perception of the viewer, five interforaminal implants in three dry human mandibles were planned with visit and executed using the stereoscopic projection through the HMD. The deviation between planned and achieved position of the implants was measured on corresponding computed tomography (CT) scan images recorded post-operatively. The deviation between planned and achieved implant position at the jaw crest was 0.57 ± 0.49 mm measured from the lingual, and 0.58 ± 0.4 mm measured from the buccal cortex. At the tip of the implants the deviation was 0.77 ± 0.63 mm at the lingual and 0.79 ± 0.71 mm at the buccal cortex. The mean angular deviation between planned and executed implant position was 3.55 ± 2.07 degrees. The present in vitro experiment indicates that the concept of preoperative planning and transfer to the operative field by an HMD allows us to achieve an average precision within 1 mm (range up to 3 mm) of the implant position and within 3° deviation for the implant inclination (range up to 10°). Control during the drilling procedure is significantly improved by stereoscopic vision through the HMD resulting in a more accurate inclination of the implants.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-8491
    Keywords: Key words Dopamine receptor D4 ; Genetics ; Personality inventory ; Polymorphism ; Excitement-Seeking
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An association between long alleles of a variable number tandem repeat (VNTR) polymorphism in the dopamine receptor D4 gene and the extraversion related personality traits Excitement and Novelty Seeking has been reported in healthy subjects. In an attempt to replicate the previous findings, 256 healthy Caucasian volunteers were analysed for a potential relationship between the dopamine receptor D4 exon III VNTR polymorphism and Extraversion as assessed by the Revised Neo Personality Inventory (NEO PI-R). The present study did not yield evidence for an association between Extraversion and the dopamine receptor D4 polymorphism.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1437-1588
    Keywords: Schlüsselwörter Tropenkrankheiten ; Virale hämorrhagische Fieber ; Lassa-Fieber ; Infektionsschutz ; Quarantäne ; BSL4 ; Seuchenhygiene ; Öffentliches Gesundheitswesen ; Rettungswesen ; Krankentransport ; Krankenpflege ; Schutzkleidung ; Kontaktpersonen ; Keywords Tropical Diseases ; Viral Haemorrhagic Fever ; Lassa-Fever ; Epidemic Control ; Preparedness Plans ; Quarantine ; BSL4 ; Patient Isolation ; Barrier Nursing ; Protective Equipment ; Contact Tracing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Patients infected with viral haemorrhagic fevers (VHF), pneumonic plague or zoonotic orthopoxvirus infections usually require intensive care and a special isolation. Contact persons must be traced and monitored. Last year our working group published a concept for the management and control of these life-threatening highly contagious diseases. Now the principles of our plan have been accepted. The development of guidelines for rapid reaction to those communicable diseases is an important task for all EU Member States. In Germany microbiological diagnosis is performed by a diagnostic centre (Biosafety-Level BSL4) and supported by a corresponding confirmation laboratory. At present four high security infectious disease units for patient care (HSIU) are available in Munich, Leipzig, Hamburg and Berlin. Another one located in Frankfurt will be functional by 2001. In addition to the HSIU a corresponding number of centres of competence shall be established in order to support and advise the hospitals initially treating the patients as well as the local public health officer. The risk categorisation for contact persons, which has been developed by our working group, has proved to be very useful in practice. Ambulances should be used for transfer of patients to the HSIU. So-called transport-isolators are not suitable for patients who are seriously ill. Air-based transport without using an isolator is a problem, since no decontamination procedure exists. As soon as the last HSIU in the Rhine Main area is working the centres of competence will be established. This will provide competent health care for VHF-patients and a convincing management for these kinds of threats to public health everywhere in Germany.
    Notes: Zusammenfassung Verschiedene virusbedingte hämorrhagische Fieber (VHF), Pocken (humane Affenpocken) sowie Lungenpest erfordern besondere Maßnahmen zum Schutz des Krankenhauspersonals und anderer Personen vor Ansteckung. Kontaktpersonen müssen ermittelt und überwacht werden, um eine Ausbreitung zu verhindern. Ein im Mai 1999 veröffentlichtes Konzept zum Management und zur Kontrolle dieser lebensbedrohenden hochkontagiösen Infektionskrankheiten wurde inzwischen mit Fachöffentlichkeit und Gesundheitsbehörden diskutiert. Bei den zwischenzeitlich aufgetretenen Fällen bestätigte sich das vorgeschlagene Vorgehen : In Deutschland werden die mikrobiologische Diagnostik und Differentialdiagnostik zentral von einem Zentrum der biologischen Sicherheitsstufe BSL4 und einem entsprechenden Bestätigungslabor vorgenommen. Für Isolierung und klinische Behandlung der Patienten stehen vier Behandlungszentren zur Verfügung, ein fünftes soll im nächsten Jahr betriebsbereit sein. Die zunehmende Inanspruchnahme zeigt, dass sich die vorgesehene Schwerpunktversorgung durchsetzt. Handelsübliche Transportisolatoren sind für schwer kranke Personen nicht geeignet. Ohne deren Verwendung können Luftfahrzeuge jedoch nicht regelrecht dekontaminiert werden. Transporte sollen daher grundsätzlich auf dem Landweg erfolgen. Zur Unterstützung und Beratung der erstversorgenden Krankenhäuser und der örtlich zuständigen Amtsärzte sollen um die Behandlungszentren sog. Kompetenzzentren entstehen. Der Personal- und Platzbedarf bei der Versorgung eines an einem VHF Erkrankten in fortgeschrittenem Stadium ist höher als erwartet. Die adäquate Versorgung von Kranken in sog. Bettisolatoren ist nicht möglich. Routinelaboruntersuchungen müssen in der Behandlungseinheit erfolgen. Maßnahmen zur Verhinderung der Weiterverbreitung müssen stärker koordiniert werden. Die von uns vorgeschlagene Einteilung der Kontaktpersonen wird um eine Auflistung der empfohlenen Maßnahmen ergänzt.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Holz als Roh- und Werkstoff 58 (2000), S. 380-386 
    ISSN: 1436-736X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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