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  • 1
    Electronic Resource
    Electronic Resource
    MRI of pituitary macroadenomas with reference to hormonal activity (1992)
    Springer
    Neuroradiology 34 (1992), S. 43-51 
    Details
    ISSN: 1432-1920
    Keywords: Pituitary ; Neoplasm ; Magnetic resonance imaging ; Acromegaly ; Prolactinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 115 patients with pituitary macroadenomas, the findings on mid-field MRI were correlated with the hormonal activity of the tumours. Adenomas secreting growth hormone (GH), prolactin (PRL) and clinically nonsecretory adenomas were studied. Tumour size, invasiveness and signal intensity patterns were recorded. Relaxation times and ratios of signal intensity and proton density (relative to the corpus callosum) were analysed in areas of apparently solid tissue in a subgroup of 59 previously untreated patients. Invasiveness was more common in PRL-and GH-secreting adenomas than in the nonsecreting ones. Diffuse invasion of the base of the skull was most common in prolactinomas, and associated with a lower frequency of suprasellar tumour extension. In prolactinomas, a correlation was found between the maximum serum PRL level and tumour size. Haemorrhagic, cystic or necrotic areas were less common in GH-secreting tumours than in the other types. Haemorrhage was more common in prolactinomas than in nonsecreting tumours. MR parameters were similar in prolactinomas and nonsecreting adenomas, but indicated a smaller amount of water in GH-secreting tumours.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588432
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  • 2
    Electronic Resource
    Electronic Resource
    Central nervous system lesions in hypomclanosis of Ito: an MRI and pathological study (1993)
    Springer
    Journal of neurology 240 (1993), S. 302-304 
    Details
    ISSN: 1432-1459
    Keywords: Hypomelanosis of Ito ; Fetal macrocephaly ; Neonatal epileptic encephalopathy ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A severe form of hypomelanosis of Ito is reported, which presented as fetal macrocephaly and neonatal epileptic encephalopathy. Lymphocyte karyotypes were normal. MRI showed an absence of delineation between cortical grey matter and white matter. The prominent neuropathological finding was an abnormal cortical morphogenesis, with the co-existence of cells migrating normally and cells exhibitingarrêt en route or even the complete absence of migration. Intense astrocytic reaction with moderate dystrophie features was prescrit. Juxtaposition of two migration behaviours in the neural cells paralleled the cutaneous findings and reinforced the hypothesis of a genetic chimerism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00838167
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  • 3
    Electronic Resource
    Electronic Resource
    Bone marrow blood supply in gadolinium-enhanced magnetic resonance imaging (1994)
    Springer
    Skeletal radiology 23 (1994), S. 455-457 
    Details
    ISSN: 1432-2161
    Keywords: Bone marrow ; Blood supply ; Magnetic resonance imaging ; Enhancement ; Lumbar spine ; Gadopentetate dimeglumine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A retrospective study was performed to determine whether bone blood supply can be assessed on gadolinium-enhanced magnetic resonance imaging. Lumbar spine magnetic resonance imaging (MRI) examinations of 49 patients attending for post-laminectomy examination were reviewed (30 male, 19 female, mean age 46.4 years, age range 23–84 years). Each study included sagittal T1-weighted spin echo sequences before and after gadolinium administration. Regions of interest were drawn within the L3 vertebral body from a parasagittal slice from each sequence. Signal intensity (SI) values were ascertained and the percentage increase in SI was calculated. For each patient, changes in receiver gain for pre and post-gadolinium images were corrected by an image scaling factor. In all cases, a measurable increase in SI was found (mean 15.3%, range 4.4–55.7) due to bone vascularity. The results give no indication of the quantity or timing of blood supply but provide a basis for further work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00204608
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  • 4
    Electronic Resource
    Electronic Resource
    Double thoracic drainage of a left inferior vena cava (1990)
    Springer
    Surgical and radiologic anatomy 12 (1990), S. 225-227 
    Details
    ISSN: 1279-8517
    Keywords: Venae cavae, abnormalities ; Azygos vein ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs rapportent un cas de veine cave inférieure gauche avec un drainage hémiazygos puis azygos préférentiel associé à un drainage accessoire par la veine intercostale supérieure gauche. Cette malformation congénitale exceptionnelle entrant dans le cadre d'un syndrome polysplénique a été étudiée par cavographie, tomodensitométrie et imagerie par résonance magnétique.
    Notes: Summary The authors report a case of left IVC with a preferential hemiazygos-azygos drainage associated with an accessory left superior intercostal vein drainage. This exceptional congenital malformation which finds its place in polysplenia was studied by cavography, CT and MR imaging.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01624528
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  • 5
    Electronic Resource
    Electronic Resource
    MRI of the pathological female pelvis (1991)
    Springer
    European radiology 1 (1991), S. 75-80 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance imaging ; Pelvis ; neoplasms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The current status of the use of MRI in the diagnosis and staging of pelvic masses is reviewed, emphasizing the positive and negative aspects of this imaging technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00540111
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  • 6
    Electronic Resource
    Electronic Resource
    Meningioma of the third ventricle (1991)
    Springer
    Neuroradiology 33 (1991), S. 354-356 
    Details
    ISSN: 1432-1920
    Keywords: Meningioma ; Third ventricle ; Magnetic resonance imaging ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Meningiomas of the third ventricle are rare intracranial neoplasms. We reported such a case in a 42 years old man without clinical evidence of increased intracranial pressure. Computed tomography (CT) and magnetic resonance imaging (MRI) demonstrated the tumour sitting in the superior and anterior part of the third ventricle, bulging into the lateral ventricles. CT was more effective than MRI in the demonstration of calcifications whereas MRI proved to be superior in delineation of the tumour and its relation with surrounding structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587824
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  • 7
    Electronic Resource
    Electronic Resource
    MR findings in leukodystrophy (1991)
    Springer
    Neuroradiology 33 (1991), S. 368-371 
    Details
    ISSN: 1432-1920
    Keywords: Leukodystrophy ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Up to 5 years ago, the radiological diagnosis of leukodystrophy was based on computed tomography (CT). More recently, magnetic resonance imaging (MRI) has been used to study pathology of the white matter with great success. The abnormalities in eight patients with different types of leukodystrophy are described, using high-field MRI. CT and MRI show comparable sensitivity in detecting the pathological changes of leukodystrophy. MRI seems to be superior in visualizing the extent of the lesions, their precise anatomical location and any involvement of the brain stem and cerebellum. Differential diagnosis among the three types of leukodystrophy by MRI is difficult but may be attempted by some features. Specific diagnosis can be achieved only by laboratory examination or histology. The role of MRI should be to suggest the proper biochemical test at an earlier stage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587829
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  • 8
    Electronic Resource
    Electronic Resource
    Bony exostosis of the atlas with resultant cranial nerve palsy (1991)
    Springer
    Neuroradiology 33 (1991), S. 453-454 
    Details
    ISSN: 1432-1920
    Keywords: Osteochondroma ; Spinal tumour ; Cranial nerve palsy ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case of tenth and twelfth nerve compression secondary to a bony exostosis of the first cervical vertebra is described. This uncommon phenomenon serves to outline the importance of imaging the course of a cranial nerve when no intracranial abnormality is demonstrable on CT or MRI. The radiologic features of spinal osteochondromas are reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598626
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  • 9
    Electronic Resource
    Electronic Resource
    MRI of a very rare hereditary ectodermal dysplasia: PIBI(D)S (1992)
    Springer
    Neuroradiology 34 (1992), S. 316-317 
    Details
    ISSN: 1432-1920
    Keywords: PIBI(D)S ; Trichothiodystrophy ; Central nervous system dysmyelination ; Magnetic resonance imaging ; Cockayne syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary PIBI(D)S is a acronym for a very rare autosomal recessive syndrome consisting of photosensivity, mild non-congenital ichthyosis, brittle cystine-deficient hair, impaired intelligence, occasionally decreased fertility and short stature. We report a 12-year-old female patient affected by PIBI(D)S with previously unreported MRI findings of central nervous system dysmyelination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588190
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  • 10
    Electronic Resource
    Electronic Resource
    The demonstration of glomus tumours by subtraction MRI (1992)
    Springer
    Neuroradiology 34 (1992), S. 470-474 
    Details
    ISSN: 1432-1920
    Keywords: Glomus tumours ; Gadolinium ; Subtraction ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirteen patients with 14 glomus tumours have been examined by subtraction gadolinium-enhanced magnetic resonance imaging (MRI), with T1-weighted MR sequences before and after intravenous gadolinium-DTPA. To eliminate movement between subtraction pairs, the patient remains in the tunnel of the imager during administration of the contrast medium, and the venepuncture is made into the dorsum of the foot. The effect of the subtraction process is to remove the NMR signal from the final image so that the photographic densities recorded are dependent on the vascularity of the tissue concerned, normal or abnormal. A particular advantage is the removal of fat signal: the low vascularity of adipose tissue ensures that it is recorded as of minimal density. The extent of skull base glomus tumours has been shown optimally by this technique. Subtraction can also help differentiate glomus tympanicum from glomus jugulare lesions, which may be of crucial importance when deciding the surgical approach. In addition to diagnosis, the technique is also important post-operatively, when imaging is needed to show residual or recurrent tumour and to monitor the effects of radiotherapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598952
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