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  • Chemical shift  (2)
  • AIDS  (1)
  • Anomalies, congenital  (1)
  • 1
    Electronic Resource
    Electronic Resource
    High signal intensity of both putamina in patients with HIV infection (1991)
    Springer
    Neuroradiology 33 (1991), S. 362-363 
    Details
    ISSN: 1432-1920
    Keywords: Human immunodeficiency virus (HIV) ; Encephalitis ; Magnetic resonance imaging ; AIDS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report two patients with HIV infection whose MR imaging showed abnormal high signal intensity confined to both putamina on T2-weighted spin echo (SE) images. We assume that they may represent the early manifestations of HIV encephalitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587827
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    MRI of silicone vitreous ocular implants with phantom correlation (1995)
    Springer
    Neuroradiology 37 (1995), S. 313-316 
    Details
    ISSN: 1432-1920
    Keywords: Key words Orbit ; Silicone ; MRI ; Chemical shift
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We imaged two patients who had silicone oil injected into their vitreous cavities. The images demonstrated an increased chemical shift artifact. We developed and tested an in vitro silicone oil model in an attempt to explain this. To our knowledge, this artifact has not been previously described. We constructed a phantom using medication cups containing water, lard and two types of silicone. Background control baths of water and lard were used to simulate different local environments. The phantoms were imaged with T1- and T2-weighted and T1-weighted fat suppression sequences. The artifacts were due to the pronounced chemical shift of silicone in relation to intraconal fat. Our model accurately reproduced our clinical images. Spectral analysis of the silicone model revealed different resonating frequencies for fat/silicone, thereby explaining the pronounced chemical shift artifact.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588344
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    MRI of silicone vitreous ocular implants with phantom correlation (1995)
    Springer
    Neuroradiology 37 (1995), S. 313-316 
    Details
    ISSN: 1432-1920
    Keywords: Orbit ; Silicone ; MRI ; Chemical shift
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We imaged two patients who had silicone oil injected into their vitreous cavities. The images demonstrated an increased chemical shift artifact. We developed and tested an in vitro silicone oil model in an attempt to explain this. To our knowledge, this artifact has not been previously described. We constructed a phantom using medication cups containing water, lard and two types of silicone. Background control baths of water and lard were used to simulate different local environments. The phantoms were imaged with T1- and T2-weighted and T1-weighted fat suppression sequences. The artifacts were due to the pronounced chemical shift of silicone in relation to intraconal fat. Our model accurately reproduced our clinical images. Spectral analysis of the silicone model revealed different resonating frequencies for fat/silicone, thereby explaining the pronouced chemical shift artifact.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588344
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Large asymptomatic noncolloid neuroepithelial cysts in the lateral ventricle: CT and MR features (1989)
    Springer
    Neuroradiology 31 (1989), S. 98-101 
    Details
    ISSN: 1432-1920
    Keywords: Brain cysts ; Anomalies, congenital ; Magnetic resonance imaging ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two cases of large asymptomatic cysts of the lateral ventricle are presented. The cyst walls or cyst contours were demonstrated well by proton density-weighted or T2-weighted spin echo images. These cysts are being detected as incidental findings in increasing frequency with the increasing use of MR imaging. Our data and review of the literature suggest that surgical intervention is not necessarily warranted, but that careful clinical evaluation is indicated. The diagnostic problem of intraventricular cysts is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00342042
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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