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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The international journal of cardiovascular imaging 7 (1991), S. 1-5 
    ISSN: 1573-0743
    Keywords: newborns ; MRI ; congenital heart disease ; systemic shunts ; oblique views
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Eight infants with systemic-pulmonary Blalock-Taussig shunts were evaluated by spin-echo ECG-gated MRI. Contrary to Echocardiography, MRI using coronal oblique projections successfully visualized all palliative shunts entirely in one single plane (including one carried out on a right aberrant subclavian artery). MRI allowed assessment of size, course and patency of the shunt, including pulmonary and subclavian insertion. The proximal portion of the pulmonary and subclavian arteries were also visualized. We conclude that MRI with axial scans completed by coronal oblique planes is a promising, non invasive method for imaging the anatomical features of Blalock-Taussig shunts.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European radiology 6 (1996), S. 82-85 
    ISSN: 1432-1084
    Keywords: Extra-adrenal pheochromocytoma ; Liver tumor ; CT ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Pheochromocytomas are uncommon tumors that represent a potentially curable cause of hypertension. They are usually located in the adrenal glands, but 10% arise from extra-adrenal sites, located along the paravertebral sympathetic chains. We report a case of primary hepatic pheochromocytoma responsible for a severe hypertension in a 24-year-old man. Echotomography showed a lightly heterogeneous mass located in the segment 8 of the liver. Iodine 131 — metaiodobenzylguanidine scintigraphy showed a large hepatic concentration of the tracer and no other localization. This tumor appeared highly vascularized on enhanced CT scan and on aortic angiography. Magnetic resonance imaging revealed a hepatic tumor with a high signal intensity on T2-weighted images and with a signal isointense to the liver on T1-weighted images. The hepatic venous sampling contained the highest catecholamine level, whereas the adrenal venous sampling was normal. After surgical resection of the hepatic tumor, the tension level and catecholamines plasmatic level normalized. No recurrent symptoms appeared during a 3-year follow-up.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1920
    Keywords: Spinal cord ; Neoplasms ; Myelography ; Metrizamide ; Syringomyelia ; Cysts ; Computed tomography ; Chiari malformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The experience with percutaneous puncture of intraspinal cystic lesions is reported in four cases: an extradural cyst demonstrated with air, a spinal cord tumor with lipiodol and two cases of syringomyelia with metrizamide. Percutaneous puncture of cystic lesions makes possible an accurate delineation of the lesion and a histological approach through biochemical and cytological analysis of the aspirated cystic fluid, while aspiration of the fluid of cystic tumors decompresses the spinal cord and thus plays a therapeutic role.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 24 (1982), S. 115-116 
    ISSN: 1432-1920
    Keywords: Subdural tumor ; Myelography ; Metastasis ; Spine ; Paraplegia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case of metastasis to the thoracic spinal subdural space is reported. Metrizamide myelography showed narrowing of the upper thoracic subarachnoid space. A tumor in the spinal subdural space is unusual; only a few cases have been reported. The myelographic appearance is not specific; an epidural metastasis can produce the same myelographic picture.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 32 (1990), S. 485-487 
    ISSN: 1432-1920
    Keywords: MRI ; Brain ; Sella turcica ; Mucolipidoses ; Mannosidosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary MR findings are reported in three patients presenting mannosidosis. Among a family of 8 children, 4 presented typical clinical and biological abnormalities related to mannosidosis. Brain MR examinations including sagittal T1 and axial T2 sections were obtained in three patients of this family (one 25-year-old male, one 34-year-old female, and one 35-year-old female). MR scans demonstrate seven types of modifications: (1) brachycephaly, (2) thick calvaria, (3) verticalization of the chiasmatic sulcus, (4) poor pneumatization of the sphenoid body, (5) partial empty sella turcica (6) cerebellar atrophy, and (7) white matter signal modifications. High signal abnormalities involving the parieto-occipital white matter are identified on axial T2-weighted scans in the three patients and are probably related to demyelination and associated gliosis as described previously by several authors on specimens.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1920
    Keywords: Spinal cord ; Intradural arachnoid cyst ; MR ; Myelography ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A thoracic intradural arachnoid cyst presenting as an intradural extramedullary mass highly suggestive of psammoma on myelogram and myelo-CT is reported in a 34-year-old female. High densities of the cyst were related to collection of contrast media within the cyst. However MR examination of the thoracic spinal cord including sagittal T1 (without and with contrast) and T2 studies failed to demonstrate the mass. Lack of MR changes were related on one hand to the small size of the cyst and to the absence of mass effect on the spinal cord, and on the other hand to a CSF-like signal of the contents of the cyst. Only combination of myelography, myelo-CT and MR allows precise diagnosis of small intradural arachnoid cysts; however MR is the method of choice for evaluation of large intradural subarachnoid cysts.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1920
    Keywords: Spine ; Apophyseal ring ; Intervertebral disc ; Herniation ; Trauma ; Scheuermann's disease ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report radiological findings in 13 cases of avulsion of the posterior lumbar apophyseal ring. The lesion affected young adults in 10 cases and adolescents in 3 cases. The lesion involved the inferior endplate of L4 in 11, and of L5 in 1 patient, and of L3 in 1 patient. 6 patients presented with unilateral sciatica, 3 with bilateral sciatica, and 4 with low back pain. Acute spinal trauma was evident only in 2 adolescents. Radiological recognition of the lesion was possible on plain films in 9 cases. CT demonstrates association of avulsion of the posterior vertebral apophyseal ring and herniated disc in all cases. Avulsion of the posterior apophyseal ring has to be differentiated from posterior longitudinal ligament, annulus, or herniated disc calcifications, as well as from posterior degenerative ridge osteophytes. Controversy about physiopathology of the lesion remains: weakness of the apophyseal ring during childhood and in patients with Scheuermann's disease may explain avulsion of the apophyseal ring in association with median disc herniation.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1920
    Keywords: Myelography ; spinal cord angiography ; spinal cord arteriovenous malformation ; spinal cord ; spinal veins ; chronic myelopathy ; embolization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report a new case of intraspinal extra-medullary meningeal arteriovenous fistula draining through medullary veins. Discovered in a 33-year-old black man suffering from a cauda equina syndrome, this malformation suspected in myelography was confirmed by a selective angiographic procedure of both internal iliac arteries. This investigation specified the sacral site of the fistula as well as its feeding arteries from several branches of the left and right internal iliac arteries and its posterior and intra-meningeal venous medullary drainage. An embolization procedure followed by a surgical approach and a second embolization session brought a fair improvement to this young patient who could walk again. The acquired traumatic origin of the fistula is discussed for this patient who had been previously operated at his L5-S1 level.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1920
    Keywords: Spine ; Epidural gas ; Epidural cyst
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summay L5 radicular pain related to an epidural gas-containing pseudocyst is described in a 62-year-old female. Transeint resolution of radicular pain was observed after CT-guided gas aspiration. Recurrent radicular pain led to surgical treatment; after operation the radicular pain disappeared.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1920
    Keywords: Spine ; Spondylolisthesis ; Stress fracture ; Pedicle ; Neurofibromatosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We present two cases of bilateral, symmetrical pedicular clefts associated with dural ectasia in von Recklinghausen's disease (neurofibromatosis). In one case the pedicular cleft was at the T12 level, while in the other it was at L4, and was responsible for spondylolisthesis. Two hypotheses are advanced to explain the cleft: (1) a congenital, dysplastic osseous defect and (2) bilateral stress fractures related to thinning of the pedicle caused by dural ectasia.
    Type of Medium: Electronic Resource
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