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  • 1
    Electronic Resource
    Electronic Resource
    Congenital absence and aberrant course of the internal carotid artery (1996)
    Springer
    European radiology 6 (1996), S. 650-654 
    Details
    ISSN: 1432-1084
    Keywords: Aberrant internal carotid artery ; Congenital absence of the internal carotid artery ; CT ; MRI ; MR angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We retrospectively reviewed the imaging features of an aberrant course of the internal carotid artery (ICA) in one patient and its unilateral absence in four. Absence of the ICA was initially detected by MRI and MR angiography in both patients who underwent these examinations. CT revealed an abnormal or absent carotid canal in all cases. Radiological diagnosis by MRI and MR angiography could play an important role in the diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187666
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hemorrhage in pituitary adenoma: correlation of MR imaging with operative findings (1998)
    Springer
    European radiology 8 (1998), S. 971-976 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Pituitary adenoma ; MR imaging ; Hemorrhage ; Cyst
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The aim of this study was to correlate MR imaging and operative findings of hemorrhage in pituitary macroadenomas. We retrospectively reviewed MR images of 113 surgically proven pituitary adenomas. All patients were examined on a 1.5-T MR system. The intensity of intratumoral cystic cavities was correlated with operative findings. In 15 patients with pituitary apoplexy, we determined relationship between interval of MR examination after apoplectic event and MR signal intensity. In 8 patients with repeated preoperative MR examination, we evaluated sequential changes of intratumoral hemorrhage. There were 54 cavities at surgery: 52 were hemorrhagic and 2 were nonhemorrhagic. Twenty-nine of 52 hemorrhagic cysts demonstrated high/low signal (H/L) fluid–fluid levels on T2-weighted image (T2WI). In 19 of them, two components could be separately seen at operation: the supernatant high-intensity area represented xanthochromic fluid, and the dependent low-intensity area represented liquefied hematoma. The H/L fluid–fluid level was observed predominantly in hematomas on MR images obtained after longer intervals. In patients with repeated MR examination, follow-up MR imaging revealed additional hemorrhage or new formation of fluid–fluid levels. It was surprising that 12 of 14 cysts preoperatively judged as nonhemorrhagic in fact contained hemorrhagic components. The preoperative MR images are well correlated to the operative findings in hemorrhagic pituitary macroadenomas. It proved that 52 of 54 cystic cavities had hemorrhagic component.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050498
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Correlation of lesions in the hippocampal region noted on MR images with clinical features (1997)
    Springer
    European radiology 7 (1997), S. 281-286 
    Details
    ISSN: 1432-1084
    Keywords: Key words: MR imaging ; Hippocampus ; Epilepsy ; Amnesia ; Dementia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The purpose of our work was to compare the MR imaging findings of obvious hippocampal and/or juxtahippocampal lesions with corresponding clinical features. Magnetic resonance images of 63 patients with obvious lesions in the hippocampal and/or juxtahippocampal regions were reviewed and their findings were correlated with patients' clinical characteristics. Based on the MR and clinical findings, the patients were divided into four groups: (a) 26 patients with space occupying lesions or suspected vascular malformation frequently causing symptomatic temporal epilepsy; (b) 14 with hippocampal infarcts, which when left-sided or bilateral caused amnesia; (c) 11 with encephalitis and 5 with old temporal contusion usually accompanied by both amnesia and epilepsy; and (d) 7 with temporal atrophy and progressive dementia of subacute onset. Magnetic resonance imaging allows precise localization and evaluation of the clinical correlates of hippocampal and juxtahippocampal lesions, which frequently caused symptomatic temporal epilepsy and/or amnesic syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050151
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  • 4
    Electronic Resource
    Electronic Resource
    CT and MR imaging of craniopharyngioma (1997)
    Springer
    European radiology 7 (1997), S. 464-469 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Craniopharyngioma ; MR ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We reviewed imaging findings of CT and MR imaging in 20 cases of surgically confirmed craniopharyngioma in an attempt to determine their relation to patterns of tumor extent. The relationship between these patterns and the frequency of preoperative CT diagnosis and MR imaging diagnosis according to the surgical diagnosis were determined. The CT technique was superior to MR imaging in the detection of calcification. The MR imaging technique was superior to CT for determining tumor extent and provided valuable information about the relationships of the tumor to surrounding structures. Thus, CT and MR imaging have complementary roles in the diagnosis of craniopharyngiomas. In cases of possible craniopharyngioma, noncontrast sagittal T1-weighted images may enable the identification of the normal pituitary, possibly leading to the correct diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050184
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Cranial MRI and MR angiography in Menkes' syndrome (1993)
    Springer
    Neuroradiology 35 (1993), S. 556-558 
    Details
    ISSN: 1432-1920
    Keywords: Menkes' syndrome ; Magnetic resonance imaging ; Magnetic resonance angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report two boys with Menkes' syndrome who underwent cranial MRI and MR angiography (MRA). In both, CT and MRI revealed progressive cerebral atrophy with a subdural haematoma or effusion. Delayed myelination or dysmyelination of the white matter was suggested. Tortuosity of the cervical and intracranial vessels was well demonstrated by MRA, obviating more invasive conventional angiography should it be thought necessary to demonstrate the characteristic systemic vascular changes of this syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588724
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Cerebral oxygen and glucose metabolism and blood flow in mitochondrial encephalomyopathy: a PET study (1996)
    Springer
    Neuroradiology 38 (1996), S. 102-107 
    Details
    ISSN: 1432-1920
    Keywords: Mitochondrial encephalomyopathy ; Cerebral oxygen metabolism ; Cerebral glucose metabolism ; Cerebral blood blow ; Positron emission tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cerebral blood flow (CBF), oxygen metabolism (CMRO2), and glucose metabolism (CMRGlc) were measure using positron emission tomography in five patients diagnosed as having mitochondrial encephalomyopathy. The molar ratio between the oxygen and glucose consumptions was reduced diffusely, as CMRO2 was markedly decreased and CMRGlc was slightly reduced. The CBF showed less changes. The CBF increase on hypercapnia was smaller than normal, though this was not significant. CBF with hypocapnia demonstrated a significant reduction compared with the normal. These results suggest that oxidative metabolism is imparied and anaerobic glycolysis relatively stimulated, due to a primary defect of mitochondrial function, and that mild lactic acidosis occurs in brain tissue because of impaired utilisation of pyruvate in the TCA cycle. As these findings appear to indicate directly a characteristic of this disease, such measurements may be a useful tool for assessment of the pathophysiology and for diagnosis of mitochondrial encephalomyopathy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00604789
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Reye's syndrome with cortical laminar necrosis: MRI (1996)
    Springer
    Neuroradiology 38 (1996), S. 269-272 
    Details
    ISSN: 1432-1920
    Keywords: Reye's syndrome ; Cortical laminar necrosis ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Serial MRI findings are described in two patients with Reye's syndrome, demonstrating diffuse cortical and white matter changes. In the acute stage, T2-weighted images showed subtle but definite laminar high signal and contrast-enhanced T1-weighted images laminar enhancement, along the entire cerebral cortexbilateraly. In the chronic stage, unenhanced T1-weighted images showed diffuse cortical laminar high signal. These characteristic MRI features seemed very similar to those of laminar cortical necrosis in hypoxic brain damage. MRI also displayed delayed white matter changes with cerebral atrophy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00596545
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Investigation of hydrocephalus with three-dimensional constructive interference in steady state MRI (2000)
    Springer
    Neuroradiology 42 (2000), S. 634-638 
    Details
    ISSN: 1432-1920
    Keywords: Key words Hydrocephalus ; Magnetic resonance imaging, pulse sequences ; Neurosurgery, endoscopic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report four patients with various types of hydrocephalus in whom constructive interference in steady state (CISS) MRI disclosed the cause of the hydrocephalus. The imaging clearly delineated an abnormal contour of the ventricular system and intraventricular septa, essential information for surgical planning, including endoscopic surgery. Postoperative CISS images were useful for showing not only regression of hydrocephalus but also the patency of small fenestrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000330
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    The anterior choroidal artery syndrome (1994)
    Springer
    Neuroradiology 36 (1994), S. 340-345 
    Details
    ISSN: 1432-1920
    Keywords: Infarcts, anterior choroidal artery ; CT ; MRI ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We reviewed 12 cases of infarcts in the territory of the anterior choroidal artery (AChA) on CT and/or MRI. In each case vascular occlusion in the region was verified angiographically. Although the extent of the lesion on CT/MR images was variable, all were located on the axial images within an arcuate zone between the striatium anterolaterally and the thalamus posteromedially. The distribution of the lesions on mutiplanar MRI conformed well to the territory of the AChA demonstrated microangiographically. The variability of the extent of the infarcts may be explained by variations in the degree of occlusive changes in the AChA or the development of collateral circulation through anastomoses between the AChA and the posterior communicating and posterior cerebral arteries. The extent of the lesion appeared to be closely related to the degree of neurological deficit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612114
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Reye's syndrome with cortical laminar necrosis: MRI (1996)
    Springer
    Neuroradiology 38 (1996), S. 269-272 
    Details
    ISSN: 1432-1920
    Keywords: Key words Reye's syndrome ; Cortical laminar necrosis ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Serial MRI findings are described in two patients with Reye's syndrome, demonstrating diffuse cortical and white matter changes. In the acute stage, T2-weighted images showed subtle but definite laminar high signal and contrast-enhanced T1-weighted images laminar enhancement, along the entire cerebral cortex bilaterally. In the chronic stage, unenhanced T1-weighted images showed diffuse cortical laminar high signal. These characteristic MRI features seemed very similar to those of laminar cortical necrosis in hypoxic brain damage. MRI also displayed delayed white matter changes with cerebral atrophy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00596545
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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