ZIB

1

Digitale Medien

Titanium clips in neurosurgery for elimination of artefacts in computer tomography (CT) (1977)

Holst, H. ; Bergström, M. ; Möller, A. ; [weitere]

Springer

Acta neurochirurgica 38 (1977), S. 101-109

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ISSN: 0942-0940

Schlagwort(e): Computer tomography ; titanium clips ; artefacts

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary To eliminate the occurrence of artefacts produced by clips on the CT images, the use of titanium clips is suggested. Testsin vitro andin vivo indicate that clips manufactured from 0.2 mm thick 99.9 per cent titanium do not cause artefacts. They are resistant to corrosion, nontoxic, effective, easy to handle, relatively cheap, and are visible on plain X-ray films.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01401546

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2

Digitale Medien

Diagnosis of sellar and parasellar lesions by computed tomography (1979)

Hatam, A. ; Bergström, M. ; Greitz, T.

Springer

Neuroradiology 18 (1979), S. 249-258

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ISSN: 1432-1920

Schlagwort(e): Computed tomography, head ; Pituitary gland, neoplasms ; Sella turcica, anatomy

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary Suspected lesions in and around the sella were examined by CT in 129 cases. The diagnostic accuracy and various technical aspects of the method are described. The mean attenuation and enhancement after administration of contrast material are evaluated in craniopharyngiomas, chromophobe adenomas, meningiomas, aneurysms, dermoid cysts, an arachnoid cyst and a glioma. The choice of collimator and its use in relation to sellar dimensions, particularly the sellar depths, are emphasized.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00327688

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3

Digitale Medien

The limitations of definition of blood vessels with computer intravenous angiography (1976)

Bergström, M. ; Riding, M. ; Greitz, T.

Springer

Neuroradiology 11 (1976), S. 35-40

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ISSN: 1432-1920

Schlagwort(e): Intravenous angiography ; Computerized axial tomography ; Limitations contrast enhancement

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary Using a polystyrene phantom and various concentrations of iodine contrast material, the discrimination of blood vessels by the EMI scanner was studied. Although a 2 mm tube can be delineated using high concentrations of iodine, smaller tubes are not seen due to noise inherent in the system.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00327256

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4

Digitale Medien

Early contrast enhancement of acoustic neuroma (1978)

Hatam, A. ; Bergström, M. ; Möller, A. ; [weitere]

Springer

Neuroradiology 17 (1978), S. 31-33

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ISSN: 1432-1920

Schlagwort(e): Computed tomography ; Contrast medium enhancement ; Acoustic neuroma

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary The changes of the enhancement of the lesion with time after intravenous administration of contrast medium were measured with computed tomography (CT) in 23 cases of acoustic neuroma. The pattern of high initial enhancement followed by a fairly rapid decrease is confirmed. A more rigorous study of the enhancement pattern using a mathematical description of the enhancement curve of the tumor as well as a measurement of the individual blood enhancement curve is discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00345267

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5

Digitale Medien

Attenuation values of the cerebrospinal fluid (CSF) (1978)

Hatam, A. ; Berggren, B.-M. ; Bergström, M. ; [weitere]

Springer

Neuroradiology 15 (1978), S. 165-166

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ISSN: 1432-1920

Schlagwort(e): Computed tomography ; Cerebrospinal fluid ; Attenuation value

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary The attenuation value of CSF, obtained by lumbar puncture, was determined with computed tomography in 25 patients. Measurement of the protein content in the same samples showed no correlation with the attenuation value. It is concluded that in the normal range of protein concentrations, the effect on the attenuation is insignificant and that the attenuation value of the CSF might be used to check large deviations in the CT numbers due to artifacts.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00329061

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6

Digitale Medien

Attenuation changes of the ventricular CSF after intravenous injection of contrast material (1978)

Hatam, A. ; Bergström, M. ; Greitz, T. ; [weitere]

Springer

Neuroradiology 15 (1978), S. 167-170

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ISSN: 1432-1920

Schlagwort(e): Computed tomography, brain ; Contrast material ; Cerebrospinal fluid ; Cerebral ventricles

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary The CT attenuation change of the intraventricular CSF after i. v. administration of contrast material has been studied in 20 patients. A very small increase of attenuation was observed in the entire material. The method does not seem to be appropriate at present for the study of small attenuation changes in the CSF reflecting the passage of contrast material.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00329062

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