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  • 1
    Electronic Resource
    Electronic Resource
    Colour Doppler sonography and plain abdominal radiography in the management of patients with renal colic (1994)
    Springer
    European radiology 4 (1994), S. 532-539 
    Details
    ISSN: 1432-1084
    Keywords: Genitourinary system, ultrasound ; Hydronephrosis ; Ureteral calculi
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To assess whether the routine use of urography (IVU) is still needed in the management of patients with renal colic and suspected ureteral calculus obstruction, we prospectively evaluated 52 patients with renal colic by a combination of colour Doppler ultrasound (CDU) and plain abdominal radiography (KUB). Forty-six patients (88.4%) were successfully treated without the need for IVU. Urography was required as a pre-lithotripsy procedure (n = 4) and to confirm non-dilated ureteral calculus obstruction uropathy (n = 2). The inean resistive index (RI) in normal subjects (n = 14) was 0.62 ± 0.06 and in obstructed kidneys (n = 37) was 0.68 ± 0.07, the difference being statistically significant (p 〈〈 0.001 ). Eight patients with functionally significant high-grade obstruction had a mean RJ of 0.69 ± 0.06, absent ureteral jet and interrenal RI difference 〉0.07. CDU and KUB provide anatomical and functional information sufficient for the management of the great majority of patients with renal colic without the use of urography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226824
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Application of uniform cubic B-spline curves to machine-tool control (1991)
    Springer
    Journal of intelligent and robotic systems 4 (1991), S. 393-402 
    Details
    ISSN: 1573-0409
    Keywords: Machine tool ; numerical control ; interpolation ; B-spline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The application of B-spline functions in the domain of machine-tool control can be efficient only if it is possible to simultaneously control the shape of a contour and the speed along this contour. The paper describes a method allowing us to control the speed of a tool moving along a contour defined by an uniform cubic B-spline. This method is based upon the discretization of the B-spline parameter with respect to both a given geometrical error at to the desired speed law.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314942
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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