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  • 1
    Electronic Resource
    Electronic Resource
    Evaluation of the middle and inner ear structures: comparison of hybrid rendering, virtual endoscopy and axial 2D source images (1999)
    Springer
    European radiology 9 (1999), S. 1851-1858 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Temporal bone ; CT ; Ear ; middle ; Ear ; labyrinth ; Three-dimensional CT ; hybrid rendering ; Virtual endoscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Recent developments in 3D reconstructions can enhance the quality and diagnostic value of axial 2D image data sets with direct benefits for clinical practice. To show the possible advantages of a hybrid rendering method [color-coded 3D shaded-surface display (SSD)- and volume rendering method] with the possibility of virtual endoscopy we have specifically highlighted the use in relation to the middle and inner ear structures. We examined 12 patients with both normal findings and postoperative changes, using image data sets from high-resolution spiral computed tomography (HRSCT). The middle and inner ear was segmented using an interactive threshold interval density volume-growing method and visualized with a color-coded SSD rendering method. The temporal bone was visualized using a transparent volume rendering method. The 3D- and virtual reconstructions were compared with the axial 2D source images. The evaluated middle and inner ear structures could be seen in their complete form and correct topographical relationship, and the 3D- and virtual reconstructions indicated an improved representation and spatial orientation of these structures. A hybrid and virtual endoscopic method could add information and improve the value of imaging in the diagnosis and management of patients with middle or inner ear diseases making the understanding and interpretation of axial 2D CT image data sets easier. The introduction of an improved rendering algorithm aids radiological diagnostics, medical education, surgical planning, surgical training, and postoperative assessment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050934
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Saving, dependency and development (1996)
    Springer
    Journal of population economics 9 (1996), S. 365-386 
    Details
    ISSN: 1432-1475
    Keywords: Key words: Population growth ; saving ; development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Notes: Abstract. The widely-observed finding in the literature showing little or no relationship between population growth (and dependency) and saving requires modification based on panel and cross-section estimation of aggregate country data. While such a relationship is still weak in the hybrid Leff-type model, it is now found consistently over time and by stage of development in the Mason variable-growth life-cycle framework, where changes in demographic factors account for a notable part of saving. JEL classification: J11, O15, O16
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00573070
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Saving, dependency and development (1996)
    Springer
    Journal of population economics 9 (1996), S. 365-386 
    Details
    ISSN: 1432-1475
    Keywords: J11 ; O15 ; O16 ; Population growth ; saving ; development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Notes: Abstract The widely-observed finding in the literature showing little or no relationship between population growth (and dependency) and saving requires modification based on panel and cross-section estimation of aggregate country data. While such a relationship is still weak in the hybrid Leff-type model, it is now found consistently over time and by stage of development in the Mason variable-growth life-cycle framework, where changes in demographic factors account for a notable part of saving.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00573070
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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