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  • Articles: DFG German National Licenses  (2)
  • Keywords: Laser-induced interstitial thermotherapy; Multifibre application; Quantitative MRI-thermometry  (1)
  • Tubenkatheterisierung  (1)
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  • Articles: DFG German National Licenses  (2)
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Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Multifibre Application in Laser-Induced Interstitial Thermotherapy under On-Line MR Control (2000)
    Springer
    Lasers in medical science 15 (2000), S. 6-14 
    Details
    ISSN: 1435-604X
    Keywords: Keywords: Laser-induced interstitial thermotherapy; Multifibre application; Quantitative MRI-thermometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract .The application of multiple fibres for the conformal irradiation of tumours by laser-induced interstitial thermotherapy (LITT) has been investigated. A study was performed to evaluate the coagulated zones produced in porcine muscle tissue in vitro. For delivering specified powers into the tissue, a multifibre system was developed which allows the simultaneous use of up to four fibres. A new quantitative method of magnetic resonance imaging (MRI) has been applied for real-time thermometry. It is based on the temperature dependence of the T1 relaxation time and the equilibrium magnetisation. The MR results were compared with the measurements of fibreoptic thermometers. Since the acquisition time of the selected MR sequence takes only 3 s per slice and the calculation of the temperature measurement could be realised within a few seconds, the temperature mapping works closely to real time. The accuracy of the temperature measurements in muscle tissue was 1.5°C. Whereas single-fibre applications induced convex-shaped isotherms, concave structures were generated by a multifibre LITT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101030050041
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Indikationsstellung zu tubenrekonstruktiver Mikrochirurgie (1998)
    Springer
    Reproduktionsmedizin 14 (1998), S. 27-30 
    Details
    ISSN: 1434-808X
    Keywords: Schlüsselwörter Rekonstruktive Tubenchirurgie ; Tubenkatheterisierung ; Falloposkopie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Eine genaue Beurteilung von Art und Ausmaß pathologischer Veränderungen der Tube ist Voraussetzung für die differenzierte Indikationsstellung zu tubenrekonstruktiven Maßnahmen. Etablierte diagnostische Verfahren wie die Hysterosalpingo(sono-)graphie oder Laparoskopie mit Chromopertubation erfüllen diese Anforderung jedoch nur unzureichend. Neue Techniken, wie die der hysteroskopischen Tubenkatheterisierung, selektiven Pertubation und der Falloposkopie sollen das diagnostische Spektrum erweitern, um vor allem intraluminale Läsionen früher und differenzierter zu erkennen. Das Ziel ist dabei eine immer weniger invasive, aber präzisere Patientinnenselektion als Basis für eine (auch kosten-) effizientere Therapieplanung. Die folgende Übersicht beschreibt den aktuellen Stand der technologischen und klinischen Entwicklung dieser neuen Verfahren.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004440050019
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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