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  • Electronic Resource  (2)
  • Ethanol injection  (1)
  • PACS: 42.65.Re; 42.65.Vh; 42.81.Wg  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 66 (1998), S. 271-276 
    ISSN: 1432-0649
    Keywords: PACS: 42.65.Re; 42.65.Vh; 42.81.Wg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 16 , 1671 (1991)] described a Nd:YLF APM laser which somehow automatically adjusted the relative resonator phase. We reproduce this behavior and analyse its origin. Thermal effects due to the light power guided in the fiber affect the effective fiber length, which in turn influences the phase and thus the power level; hence a closed servo loop results. We demonstrate this explanation to be correct in quantitative terms. Consequences arise for other systems involving fiber-optic loops or interferometers.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1084
    Keywords: Key words: Parathyroid adenoma ; Ethanol injection ; Hyperparathyroidism ; Interventional radiology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The aim of this study was to evaluate mid- and long-term results of ultrasonically guided ethanol injection into parathyroid adenomas. From 1988 to 1996, 27 patients (mean age 77 ± 13 years) were treated for parathyroid adenomas by percutaneous ethanol injection. The survey included clinical information, plasma calcium, phosphorus and PTH (1–84) evaluation. Follow-up lasted 22.6 ± 10 months. No major complications were observed for 63 ethanol injections. Biochemical recovery was 58 %, biochemical improvement at 3 months was 33 %, and failure was 7 %. Four of 15 cured patients presented a recurrence of the disease 1 or 2 years after the first treatment. Ultrasonically guided ethanol injection can be useful in the treatment of parathyroid adenomas when surgery is not possible. The immediate results are interesting but not as good as those obtained with surgery. A regular biochemical survey is necessary so that recurrences can be recognized and treated at an early stage.
    Type of Medium: Electronic Resource
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