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Digitale Medien

Neuroradiological examination of thoracic radiculo-myelopathy due to ossification of the ligamentum flavum (1990)

Hanakita, J. ; Suwa, H. ; Ohta, F. ; [weitere]

Springer

Neuroradiology 32 (1990), S. 38-42

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Details

ISSN: 1432-1920

Schlagwort(e): Spinal cord compression ; Computed tomography ; Magnetic resonance imaging ; Ossification of ligamentum flavum

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary Sixteen cases of thoracic radiculomyelopathy due to ossification of the ligamentum flavum (OLF) were analyzed. The patients ranged in age from 39 to 78 years (average 57 years). There were 13 men and 3 women. A significant predilection of OLF for the lower thoracic spine (T9/10, T10/11, T11/12) was noticed. Plain X-ray of the thoracic spine and multidirectional tomography could give important information about the site of ossification. Computed tomography with the intrathecal injection of the water-soluble contrast material clearly demonstrated the ossification and the degree of compression of the spinal cord. The disadvantages of using computed tomography for diagnosing OLF included the necessity for the scan level to be previously decided by other methods because computed tomography of the entire spine was impractical. Magnetic resonance imaging was performed in 14 patients and gave important information about OLF and the compression of the spinal cord. The combination of MRI and computed tomography seems the most useful for the precise diagnosis of OLF.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00593939

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Digitale Medien

Synthesis and properties of new polyimides containing flourinated alkoxy side chains (1990)

Ichino, T. ; Sasaki, S. ; Matsuura, T. ; [weitere]

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 28 (1990), S. 323-331

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Details

ISSN: 0887-624X

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A series of new polyimides containing fluorinated alkoxy side chains are prepared from novel fluorinated alkoxy diamines. The dieletric constant at 1 kHz in the fluorinated polyimides decreases from 3.3 to 2.6 as fluorine content increases. The refractive index also changes from 1.58 to 1.48, dependent on the fluorine content. In addition, the fluorinated polyimides exhibit lower water absorption than the reference polyimides prepared from m-phenylenediamine.

Zusätzliches Material: 3 Ill.