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  • 1
    ISSN: 1520-5002
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 18 (1996), S. 133-135 
    ISSN: 1279-8517
    Keywords: Spinal cord ; Magnetic resonance imaging ; Cadaver ; Embalming ; Anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Il y aurait un grand intérêt à utiliser des vertèbres cervicales et des moelles épinières issues de cadavres pour évaluer quels degrés de subluxation traumatique et quelles lésions nerveuses sont liés. Cependant, avant d'entreprendre une telle étude, il serait important d'appréhender le degré de rétrécissement ou d'élargissement de la moelle épinière qui survient au cours de l'embaumement. C'est ce que nous avons réalisé dans ce travail en comparant les diamètres de la moelle épinière de cadavres à ceux de coupes sagittales obtenues par résonance magnétique nucléaire sur des sujets vivants. Les mesures géométriques sur des radiographies de sujets vivants ont déjà été évaluées, mais aucun modèle directement applicable aux traumatismes de la moelle épinière n'a été décrit [1]. Si les diamètres des moelles épinières embaumées représentaient fidèlement les diamètres des moelles épinières des sujets vivants, les colonnes cervicales de cadavres pourraient être utilisées comme modèles. On pourrait évaluer l'importance de la compression de la moelle épinière correspondant à des degrés variés de fractures et de luxations. Notre étude montre que les dimensions de moelles épinières augmentent après l'embaumement selon la technique de Cambridge [4].
    Notes: Summary It would be valuable to use cadaveric models of cervical vertebrae and spinal cord to assess how varying degrees of traumatic subluxation would relate to neurological damage. However, before such a study may be undertaken, it would be important to assess the degree of shrinkage or expansion of the spinal cord that occurs during the embalming process. This is achieved in this study by comparing diameters of cadaveric spinal cord to that of sagittal magnetic resonance scans of living subjects. The geometric measurements of radiographs in living subjects has been assessed but no direct model for spinal cord injury has been described [1]. If embalmed spinal cord diameters were a good estimator of living spinal cord diameters then cadaveric cervical spines could be used as a model. By reproducing various degrees of fracture and dislocation the extent of corresponding cord compression could be assessed. Our study shows that spinal cord dimensions increase after embalming using the Cambridge procedure [4].
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 19 (1997), S. 269-271 
    ISSN: 1279-8517
    Keywords: Atlas ; Axis ; Dens ; Odontoid ; Os odontoideum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This case report represents the finding of an abnormal atlas vertebra during dissection of 34 cadavers. The case which we describe appeared to have an atlas with a mass at a position similar to that of a centrum. This mass may have been a developmental abnormality of the centrum of the atlas or may have represented a congenital abnormality, known as the os odontoideum. Alternatively the abnormality may have been due to non-union of an odontoid fracture, with subsequent fusion to the atlas. The case report will discuss which of these three alternatives is more probable, and the embryology and phylogenesis of the atlas and axis, leading us to believe in a congenital hypothesis as an explanation for the malformation.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 20 (1998), S. 109-112 
    ISSN: 1279-8517
    Keywords: Hypoglossal nerve ; Posterior inferior cerebellar artery ; Hypoglossal canal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This anatomic study describes the course and intracranial relations of the hypoglossal n. in 32 cadavers. The rootlets of the nerve emerged as a fan-shaped distribution (23.44%) or in two bundles (76.56%) and converged towards the hypoglossal canal in the subarachnoid space before piercing the dura mater. In 76.57% of cases the rootlets pierced the dura mater in two separate apertures, less commonly through the same aperture (21.87%), and in rare cases through three individual apertures, as in one of our cases. The distance between the two apertures varied from 0.6 mm to 8.7 mm. Commonly, the two bundles converged together and left the skull through one foramen in the skull. However, in some cases (28.12%), the hypoglossal canal was divided in two by a small bony spicule. In 23.45% of cases the initial course of the posterior inferior cerebellar a. (PICA) passed between the two bundles of the hypoglossal n. before ascending towards the lateral border of the fourth ventricle.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 20 (1998), S. 109-112 
    ISSN: 1279-8517
    Keywords: Hypoglossal nerve ; Posterior inferior cerebellar artery ; Hypoglossal canal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Cette étude anatomique décrit le trajet et les rapports intra-crâniens du n. hypoglosse chez 32 cadavres. Les racines nerveuses émergeaient selon une disposition en éventail (23,44 %) ou en deux fascicules (76,56 %) et convergeaient vers le canal de l'hypoglosse dans l'espace sub-arachnoïdien avant de traverser la dure-mère. Dans 76,57 % des cas, les racines traversaient la dure-mère par deux ouvertures séparées, moins souvent par le même orifice (21,87 %) et dans de rares cas par trois ouvertures séparées (1 cas). La distance séparant les deux ouvertures variait de 0,6 à 8,7 mm. Habituellement, les deux fascicules convergeaient l'un vers l'autre et quittaient le crâne par un seul foramen osseux. Cependant, dans quelques cas (28,12 %), le canal de l'hypoglosse était divisé en deux par un petit spicule osseux. Dans 23,45 % des cas, le trajet initial de l'a. cérébelleuse postérieure et inférieure (PICA) passait entre les deux fascicules du n. hypoglosse avant de monter vers le bord latéral du quatrième ventricule.
    Notes: Summary This anatomic study describes the course and intracranial relations of the hypoglossal n. in 32 cadavers. The rootlets of the nerve emerged as a fan-shaped distribution (23.44%) or in two bundles (76.56%) and converged towards the hypoglossal canal in the subarachnoid space before piercing the dura mater. In 76.57% of cases the rootlets pierced the dura mater in two separate apertures, less commonly through the same aperture (21.87%), and in rare cases through three individual apertures, as in one of our cases. The distance between the two apertures varied from 0.6 mm to 8.7 mm. Commonly, the two bundles converged together and left the skull through one foramen in the skull. However, in some cases (28.12%), the hypoglossal canal was divided in two by a small bony spicule. In 23.45% of cases the initial course of the posterior inferior cerebellar a. (PICA) passed between the two bundles of the hypoglossal n. before ascending towards the lateral border of the fourth ventricle.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 19 (1997), S. 269-271 
    ISSN: 1279-8517
    Keywords: Atlas ; Axis ; Dens ; Odontoid ; Os odontoideum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Cette publication rapporte la découverte d'une anomalie de l'atlas trouvée au cours d'une série de 34 dissections. Dans cette observation, l'atlas présente une masse osseuse située à la place topographique du corps vertébral. Cette anomalie peut être un corps embryologiquement anormal ou une autre anomalie congénitale décrite comme un “os odontoïde”. D'autre part, l'anomalie peut être due à la non consolidation d'une fracture de l'odontoöide suivie d'une fusion secondaire à l'atlas. Cette observation permet de discuter lequel de ces trois mécanismes paraît le plus probable. L'étude embryologique et la phylogenèse du groupe atlas-axis conduisent à préférer l'hypothèse congénitale comme la plus vraisemblable pour expliquer l'anomalie osseuse rencontrée.
    Notes: Summary This case report represents the findings of an abnormal atlas vertebra during dissection of 34 cadavers. The case which we describe appeared to have an atlas with a mass at a position similar to that of a centrum. This mass may have been a developmental abnormality of the centrum of the atlas or may have represented a congenital abnormality, known as the os odontoideum. Alternatively the abnormality may have been due to nonunion of an odontoid fracture, with subsequent fusion to the atlas. The case report will discuss which of these three alternatives is more probable, and the embryology and phylogenesis of the atlas and axis, leading us to believe in a congenital hypothesis as an explanation for the malformation.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-0509
    Keywords: Key words: Computed tomography (CT), technology—Liver, CT—Hepatocellular carcinoma, CT.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Background: Spiral computed tomography (CT) can image the liver during arterial and late phases of contrast and optimize the evaluation of hypervascular tumor. The objective of this study was to evaluate the relative value of arterial- and late-phase spiral CT in the detection of hepatocellular carcinomas. Methods: Fifty-eight patients with hepatocellular carcinomas underwent two-phase spiral CT examination with 10-mm collimation at 10 mm/s table speed (Siemens Somatom Plus S), and 120 mL of contrast material (36 g iodine) was injected at the rate of 3 mL/s. CT images of hepatic arterial and late phases were obtained with a 35-s and 180-s delay, respectively. Results: In 58 patients, 111 hepatocellular carcinoma lesions were seen. The arterial phase detected 93 (84%) and the late phase 75 (68%) lesions (p 〈 0.01). The arterial phase detected more lesions in 11 patients, and the late phase dected more in two patients and an equal number in 45 patients. If lesions larger than 2 cm are excluded, the arterial phase detected 40 (74%) and the late phase 21 (39%) of 54 lesions (p 〈 0.001). Conclusion: The arterial phase of spiral CT greatly improves the detection of hepatocellular carcinoma when compared with the late phase.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1989-1991 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The objective of this paper is to describe the principles of digital complex demodulation, and to summarize its advantages with respect to rapid time response and insensitivity to noise. These advantages are demonstrated by application to interferometry data collected on the Texas experimental tokamak (TEXT).
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Sensors and Actuators B: Chemical 1 (1990), S. 231-235 
    ISSN: 0925-4005
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Insect Biochemistry and Molecular Biology 23 (1993), S. 99-104 
    ISSN: 0965-1748
    Keywords: Antibodies ; Chromosomes ; E75A ; Ecdysone ; Immunofluorescence ; Polytene
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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