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  • 1
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Breast hemangioma in female infants is a rare benign lesion, prone to spontaneous regression. But when the lesion regresses there is a risk of breast atrophy if the breast bud is included in or very close to the hemangioma. A trial of corticosteroid therapy could be proposed to prevent this risk, but one must be sure that the breast bud is included in or very close to the hemangioma before treatment. We studied 4 children with breast hemangioma to evaluate the ability of MR Imaging in the diagnosis of breast bud inclusion. 0.5 Tesla axial Spin Echo T2-weighted images (TR=2000 ms; TE=120 ms) clearly depicted interface between high signal appearance of hemangioma and hypo-intensity of the breast bud: in our four patients we were able to determine whether or not the hemangioma involved the breast bud. Our preliminary study seems to demonstrate that MR imaging is a valuable imaging technique to determine which patients could be eligible for a trial of corticosteroid therapy.
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  • 2
    ISSN: 0942-0940
    Keywords: Neurofibromatosis type 1 ; brain ; glioblastoma ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report a patient with NF1, who was followed up because of an optic glioma and one enhancing lesion presumed to be a pilocytic astrocytoma. T1- and T2-weighted MR images showed also a hyperintense periventricular lesion with no enhancement and no mass effect, of an unsuspected nature. Three years later a glioblastoma multiforme developed at the site of this preceding lesion.
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  • 3
    ISSN: 1432-1084
    Keywords: Haemochromatosis ; Hypogonadism ; Liver, MRI ; Pituitary, MRI ; Testis, MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Haemochromatosis is a disease characterised by iron deposition in the liver and other organs. Hypogonadism is a commonly associated condition and may be either primary due to testicular lesions or secondary due to pituitary dysfunction. Hypogonadism secondary to pituitary dysfunction is more frequent and is thought to be related to iron deposition in the anterior pituitary. Increased iron content decreases signal intensity of spin-echo MRI images because T2 values are significantly shortened. Our purpose in this study was to evaluate by MRI iron deposition in the liver, testis and pituitary of 6 patients with haemochromatosis and severe hypogonadotrophic hypogonadism. Six subjects sereved as controls. There was a significant T2 shortening of the liver and pituitary i in patients with haemochromatosis compared with control patients. Therefore MRI detected iron overload in the pituitary and no iron in the testis, supporting the hypothesis of hypogonadotrophic pituitary insufficiency due to cellular damage induced by iron overload in the anterior pituitary gland.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European radiology 6 (1996), S. 523-525 
    ISSN: 1432-1084
    Keywords: Myelographic CT ; MRI ; Spinal injury ; Subarachnoid cyst ; Spinal cord compression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A case of posttraumatic compressive subarachnoid cyst of the thoracic spine studied by MR, myelography, and myelo-CT is reported. This cyst was surgically confirmed and treated by shunting.
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  • 5
    ISSN: 1432-1084
    Keywords: Gadolinium ; Gastrointestinal tract ; MRI ; MRI contrast enhancement ; Paramagnetic contrast agents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate the safety and efficacy of a gadoterate meglumine formulation as an oral contrast agent, MRI (0.5 T) was performed on 29 patients with abdominal disease before and after administration of contrast material. The patients ingested 16 ml/kg of a gadoterate meglumine solution (10 g/l glucose, 2 mmol/l gadoterate meglumine) over 1 h. Fourteen per cent of patients had mild side effects related to the contrast agent. Significant hyperintense contrast enhancement was achieved for the stomach and duodenum allowing better delineation of gastric and duodenal walls, entire pancreas and spleen on T1- and T2-weighted spin echo sequences. In 5 patients more diagnostic information was available from post-contrast images compared with precontrast images. This study shows that gadoterate meglumine is a safe and well-tolerated contrast agent that improves MRI of the proximal gastrointestinal tract and upper abdomen.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1084
    Keywords: Haemochromatosis ; Hypogonadism ; Liver, MRI ; Pituitary, MRI ; Testis, MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Haemochromatosis is a disease characterised by iron deposition in the liver and other organs. Hypogonadism is a commonly associated condition and may be either primary due to testicular lesions or secondary due to pituitary dysfunction. Hypogonadism secondary to pituitary dysfunction is more frequent and is thought to be related to iron deposition in the anterior pituitary. Increased iron content decreases signal intensity of spin-echo MRI images because T2 values are significantly shortened. Our purpose in this study was to evaluate by MRI iron deposition in the liver, testis and pituitary of 6 patients with haemochromatosis and severe hypogonadotrophic hypogonadism. Six subjects sereved as controls. There was a significant T2 shortening of the liver and pituitary i in patients with haemochromatosis compared with control patients. Therefore MRI detected iron overload in the pituitary and no iron in the testis, supporting the hypothesis of hypogonadotrophic pituitary insufficiency due to cellular damage induced by iron overload in the anterior pituitary gland.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1920
    Keywords: Key words Myotonic dystrophy ; Magnetic resonance imaging ; Trinucleotide repeats ; Cognitive impairment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract MRI was performed in 13 patients with the adult form of myotonic dystrophy (MD) and compared with that of sex- and age-matched normal controls. There was some cerebral atrophy in the patients and marked thickening of the skull in three of them, associated with ossification of the falx cerebri in two. We found high-signal areas on T 2-weighted images in the white matter in 9 (70 %) of the patients; five showed high-signal areas in the subcortical white matter of the temporal lobes. These findings were associated with intellectual impairment in only one patient, who had a history of a difficult birth and temporal lobe epilepsy.
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  • 8
    ISSN: 1432-1920
    Keywords: Key words Facial nerve ; Magnetic resonance imaging ; Gadolinium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We prospectively analysed the normal contrast-enhanced MRI features of the facial nerve and determined criteria for pathological contrast enhancement. We studied 31 patients with clinically normal facial nerves with T1-weighted images before and after contrast medium. The intensity, thickness and right-left symmetry of enhancement were assessed in each segment and correlated with MRI features observed in abnormal facial nerves. Enhancement along at least one segment of the facial nerve was seen in 98 % of cases, but only within the facial canal: labyrinthine segment: 78.2 %; geniculate ganglion: 96.9 %; tympanic: 88.4 %; mastoid: 66.6 %. Marked (++) to intense (+++) enhancement was seen in the labyrinthine segment in 17.4 %, the geniculate ganglion in 36.3 %, and the tympanic (25.6 %) and mastoid (7.1 %) segments, whereas intense enhancement was only seen in the geniculate ganglion (6 %) and the tympanic segment (11.6 %). A right-left asymmetry was noted in 69 % of cases. No correlation was found between enhancement and the thickness of the nerve. No enhancement of the eighth nerve was seen. We suggest three criteria for pathological enhancement: enhancement outside the facial canal; extension of enhancement to the eighth nerve; and intense enhancement in the labyrinthine and/or mastoid segments.
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  • 9
    ISSN: 1432-1920
    Keywords: Key words Acrylic vertebroplasty ; Vertebral haemangioma ; Cervical spine ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report two cases of acrylic vertebroplasty in symptomatic cervical vertebral haemangiomas. In both cases significant improvement of symptoms was rapid. One patient was able to return to work.
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  • 10
    ISSN: 1432-1920
    Keywords: Acrylic vertebroplasty ; Vertebral haemangioma ; Cervical spine ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report two cases of acrylic vertebroplasty in symptomatic cervical vertebral haemangiomas. In both cases significant improvement of symptoms was rapid. One patient was able to return to work.
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