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  • Magnetic resonance imaging  (4)
  • BOP  (1)
  • Cervical spine  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Ependymomas of the posterior cranial fossa: CT and MRI findings (1995)
    Springer
    Neuroradiology 37 (1995), S. 238-243 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Key words Ependymoma ; Posterior cranial fossa ; Children ; Magnetic resonance imaging ; Computed tomography ; Brain tumours
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We studied nine children with posterior cranial fossa ependymomas to identify specific neuroradiological features. Patients were studied preoperatively with CT and MRI; T1-, T2- and proton-density (PD)-weighted images were obtained. All children underwent surgery and a definite histopathological diagnosis was made. All the tumours grew into the fourth ventricle and caused dilatation of its upper part, which resembled a cap. All but one were separated from the vermis by a cleavage plane. In eight cases there was desmoplastic development through the foramina of the fourth ventricle, and five were heterogeneous due to necrosis and cystic change; one had a haemorrhagic area. In most cases the solid portion was isointense with grey matter on T1-weighted images, hyperintense on PD weighting, and isointense on T2-weighted images. On CT the tumour was isodense in six cases and calcification was detected in four. The presence of both desmoplastic development and a tumour/vermis cleavage plane in a posterior cranial fossa tumour isodense on CT is highly suggestive of ependymoma.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01578265
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Ependymomas of the posterior cranial fossa: CT and MRI findings (1995)
    Springer
    Neuroradiology 37 (1995), S. 238-243 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Ependymoma ; Posterior cranial fossa ; Children ; Magnetic resonance imaging ; Computed tomography ; Brain tumours
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We studied nine children with posterior cranial fossa ependymomas to identify specific neuroradiological features. Patients were studied preoperatively with CT and MRI; T1-, T2-and proton-density (PD)-weighted images were obtained. All children underwent surgery and a definite histopathological diagnosis was made. All the tumours grew into the fourth ventricle and caused dilatation of its upper part, which resembled a cap. All but one were separated from the vermis by a cleavage plane. In eight cases there was desmoplastic development through the foramina of the fourth ventricle, and five were heterogeneous due to necrosis and cystic change; one had a haemorrhagic area. In most cases the solid portion was isointense with grey matter on T1-weighted images, hyperintense on PD weighting, and isointense on T2-weighted images. On CT the tumour was isodense in six cases and calcification was detected in four. The presence of both desmoplastic development and a tumour/vermis cleavage plane in a posterior cranial fossa tumour isodense on CT is highly suggestive of ependymoma.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01578265
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Medulloblastoma in children: CT and MRI findings (1996)
    Springer
    Neuroradiology 38 (1996), S. 352-359 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Key words Medulloblastoma ; Childhood brain tumours ; Magnetic resonance imaging ; Computed tomography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Our purpose was to determine whether medulloblastoma (MB) shows specific neuroradiological features which may be employed in differential diagnosis from other common posterior cranial fossa tumours in childhood. Preoperative MRI was performed on 20 children with MB, and preoperative CT in 17 of them. All underwent surgery and histopathological diagnosis. There was a constant relationship between high density on CT and low signal on T1-weighted images. Signal behaviour on T2-weighted images and the degree of contrast enhancement were more variable. Most tumours arose in the midline, from the cerebellar vermis, involving the fourth ventricle, but hemisphere and extra-axial neoplasms were also seen. The combination of high density on CT and low signal on T1-weighted images is highly suggestive of MB and may assist preoperative differential diagnosis from other posterior cranial fossa tumours.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00596587
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 4
    Digitale Medien
    Digitale Medien
    Medulloblastoma in children: CT and MRI findings (1996)
    Springer
    Neuroradiology 38 (1996), S. 352-359 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Medulloblastoma ; Childhood brain tumours ; Magnetic resonance imaging ; Computed tomography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Our purpose was to determine whether medulloblastoma (MB) shows specific neuroradiological features which may be employed in differential diagnosis from other common posterior cranial fossa tumours in childhood. Preoperative MRI was performed on 20 children with MB, and preoperative CT in 17 of them. All underwent surgery and histopathological diagnosis. There was a constant relationship between high density on CT and low signal on T1-weighted images. Signal behaviour on T2-weighted images and the degree of contrast enhancement were more variable. Most tumours arose in the midline, from the cerebellar vermis, involving the fourth ventricle, but hemisphere and extra-axial neoplasms were also seen. The combination of high density on CT and low signal on T1-weighted images is highly suggestive of MB and may assist preoperative differential diagnosis from other posterior cranial fossa tumours.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00596587
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 5
    Digitale Medien
    Digitale Medien
    Use of acrylic prosthesis in cervical spine pathology (1984)
    Springer
    Acta neurochirurgica 71 (1984), S. 141-149 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Cervical spine ; acrylic prosthesis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The authors report on their experience with the use of a reinforced acrylic prosthesis in cervical spine pathology. The study of their own 45 cases enables the advantages and disadvantages of the technique to be demonstrated. A discussion of possible improvements in the technique and its indication completes the report.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01401159
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Discectomies of the lower cervical spine using interbody biopolymer (B.O.P.) implants (1989)
    Springer
    Acta neurochirurgica 96 (1989), S. 88-93 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Cervical interbody fusion ; biopolymer implants ; biocompatible orthopaedic polymer ; BOP
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The authors report their experience with 150 cases of discectomies performed with interbody grafts using a copolymer (Biocompatible Orthopedic Polymer or BOP*). Made of N-Vinylpyrrolidone-Methylmethacrylate monomers, polyamide fibres and calcium gluconate. BOP is a biocompatible, biodegradable, osteoconductive matrix, easy to use and quite safe. These properties are quite well appreciated for cervical interbody grafting. After discectomy, stabilization of the spine is immediate, and fusion slowly occurs around and through the biopolymer within one year. The biomaterial avoids morbidity inherent in the harvesting of an autograft, as well as any limitations resulting from the use of allografts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01456164
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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