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  • 1
    Electronic Resource
    Electronic Resource
    Technique of ultrasound examination during laparoscopic cholecystectomy (1993)
    Springer
    Surgical endoscopy and other interventional techniques 7 (1993), S. 544-549 
    Details
    ISSN: 1432-2218
    Keywords: Intracorporeal ultrasonography ; Laparoscopic ultrasonography ; Ultrasound examination ; Ultrasound technique ; Laparoscopic cholecystectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Intracorporeal ultrasonography was used as a new method to examine the bile ducts during laparoscopic cholecystectomy. A prototype rigid 7.5-MHz ultrasound probe, 10 mm in diameter and 50 cm in length, was introduced during 25 laparoscopic cholecystectomies. A dual scanning technique was developed for complete examination of the bile duct. This entailed transverse scanning via the subxyphoid trocar and longitudinal scanning via the umbilical trocar. The intrahepatic ducts were also visualized by placing the probe on the liver surface. Color Doppler imaging was useful to quickly distinguish the duct from vascular structures. Laparoscopic ultrasonography clearly delineated the bile ducts in all operations except one. The time required for imaging was significantly shorter for ultrasonography than for cholangiography. Our preliminary experience demonstrates that a complete examination of the bile ducts can be performed with intracorporeal ultrasonography in a relatively short period of time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00316701
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ein naturwissenschaftliches Literaturkarussell: Interdisziplinäres (1990)
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 24 (1990), S. XIII 
    Details
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ciuz.19900240215
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The functional relationship scan in tandem mass spectrometry (1988)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 23 (1988), S. 579-584 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A type of tandem mass spectrometric scan is described in which m1 +, m2 + and m3, defined in terms of the process m1 + → m2 + + m3, are all varied while maintaining some prescribed relationship between them. The scan can be viewed as a variant upon the neutral loss scan in which the constant mass difference between parent and daughter ion masses is replaced by some other functional relationship. Specific examples of this scan are provided in two simple applications: (i) symmetrical proton-bound dimers are recognized using the functional scan m2 = (m1 + 1)/2; and (ii) symmetrical Diels-Alder adducts comprised of diene and dienophile of equal masses are recognized in mixtures using the scan function m2 = (1/2)m1.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210230805
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    Paper (German National Licenses)
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