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  • 1
    Electronic Resource
    Electronic Resource
    Tibial and fibular developmental fields defects (1999)
    Springer
    European radiology 9 (1999), S. 1879-1881 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Lower limbs ; Developmental abnormality ; Femur ; Fibula ; Ankle and foot ; Congenital anomalies and malformations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Malformations of the lower limbs are rare and heterogeneous anomalies. To explain the diversity and complexity of these abnormalities, authors introduced the concept of tibial and fibular developmental fields. Defects in these fields are responsible for different malformations, which have been described, to our knowledge, in only one report in the radiology literature. We present a case of a newborn with femoral bifurcation, absent fibulae and talar bones, ankle and foot malformations, and associated atrial septal defect. Our case is an example of defects in both fibular and tibial developmental fields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050940
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  • 2
    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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  • 3
    Electronic Resource
    Electronic Resource
    Aberrant cervical thymus in an infant: an unusual cause of stridor (2000)
    Springer
    European radiology 10 (2000), S. 978-980 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Neck masses – Thymus – Respiratory distress in children – Stridor – Ultrasound – CT – Imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We report an 8-month-old infant presenting with stridor caused by a nonpalpable neck mass discovered at imaging and surgery. The diagnosis of aberrant thymic tissue was confirmed at histopathology. The authors reviewed the literature and discuss the embryology, imaging findings and differential diagnosis of this rare disorder.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300051048
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  • 4
    Electronic Resource
    Electronic Resource
    Osteoid osteoma and osteoblastoma: MRI appearances and the significance of ring enhancement (1996)
    Springer
    European radiology 6 (1996), S. 291-296 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance imaging ; Osteoid osteoma ; Osteoblastoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We assessed the value of contrast-enhanced fat-suppressed MRI on nine patients with osteoid osteomas and osteoblastomas. The results were compared with plain films, bone scintigraphy, computed tomography (CT) and pathological specimens. On contrast-enhanced fat-suppressed T1-weighted images the non-calcified nidi showed homogeneous enhancement, whereas the calcified lesions showed a ring enhancement sign that was proportional in intensity to the extent of the remaining part of the vascularized nidus. The degree of bone marrow and soft tissue enhancement was relative to the size and reactive inflammatory changes of the lesions. Although CT was diagnostic in most of the cases and more specific to show the calcified lesions, MRI was confirmatory in one case. We concluded that, although CT is the primary diagnostic investigation in osteoid osteomas, MRI can be reserved for equivocal cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00180597
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  • 5
    Electronic Resource
    Electronic Resource
    Quiz case of the month (1999)
    Springer
    European radiology 9 (1999), S. 1239-1240 
    Details
    ISSN: 1432-1084
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050828
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  • 6
    Electronic Resource
    Electronic Resource
    Structural Approach of Glasses Belonging to the Li〈sub〉2〈/sub〉O-Li〈sub〉2〈/sub〉WO〈sub〉4〈/sub〉-P〈sub〉2〈/sub〉O〈sub〉5〈/sub〉 Ternary System (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 1-2 (Sept. 1994), p. 413-420 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.1-2.413.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    ESR Study of Paramagnetic Centers in Irradiated Phosphate Glasses (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 1-2 (Sept. 1994), p. 421-426 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.1-2.421.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Diffraction by a randomly distorted crystal. I. The case of short-range order (1990)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 123-129 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Kato's statistical theory of diffraction [Kato (1980). Acta Cryst. A36, 763-769, 770-778] is reformulated in a self-consistent manner. The local displacement field u(r) occurs through the phase factor φ(r) = exp [2πih . u(r)]. The present paper is concerned with the limiting case where (φ(̃r)) = E = 0: this corresponds to the situation where only secondary extinction is present. There are two correlation lengths in the problem, the first one τ for the phase factor φ, the second one Γ for the wave-field amplitudes. Kato assumed Γ » τ. It is shown in the present paper that Γ ∼ τ, a property which has important consequences for the general theory, where E ≠ 0, to be discussed in the second paper of this series.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767389010457
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  • 9
    Electronic Resource
    Electronic Resource
    Extinction in finite perfect crystals: case of a sphere (1990)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 112-123 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The extinction factor in finite perfect crystals is calculated from pure dynamical theory. In particular, a detailed solution is proposed for a sphere, in which case the extinction factor depends on the Bragg angle θ and the parameter (R/Λ), where R is the radius of the crystal and Λ the extinction length. An approximate solution based on the Laue geometry is proposed and corrections to take care of the complex boundary conditions are presented. An expression easily usable in refinement programs is proposed that fits the exact value to better than 1%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767389010408
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  • 10
    Electronic Resource
    Electronic Resource
    On the statistical dynamical theory of diffraction: application to silicon (1988)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 44 (1988), S. 262-270 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A detailed solution of Kato's equations describing the propagation of X-rays or neutrons in a crystal containing a statistical distribution of imperfections is presented: this solution makes use of propagation operators to describe multiple scattering events. Corrections to Kato's original solution are given which have a significant effect, even in the case of crystals with a high degree of long-range perfection. The present modified solution is applied to experimental measurement on parallel plates of silicon with different dislocation densities by Olekhnovich, Karpei, Olekhnovich & Puzenkova [Acta Cryst. (1983), A39, 116-122]. The theory reproduces observations quite well, in contrast to conclusions reached by Olekhnovich et al. on the basis of the original solution. It can be inferred that the basic ideas of Kato allow for a correct interpretation of diffraction reflectivities in highly perfect crystals, where a significant contribution from incoherent components of scattered intensities must be incorporated. However, the theory has to be modified for the case of lower long-range perfection: this involves the modification of the expressions for the effective correlation lengths that enter the theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767387011681
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