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  • 1
    Electronic Resource
    Electronic Resource
    Preoperative assessment of the portal vein and hepatic artery in children with end-stage liver disease: is selective angiography still necessary? (1996)
    Springer
    Abdominal imaging 21 (1996), S. 495-500 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Portal vein—Hepatic artery—Doppler ultrasound—Angiography—End-stage liver disease.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Background: Selective angiography involves increased risk for children and may cause vascular complications. The aim of this study was to determine whether selective angiography is still necessary for viewing the portal vein and hepatic artery. Methods: Doppler ultrasound, abdominal aortography, and selective angiography were performed and interpreted independently in 62 children (median age = 1 year 3 months), with end-stage liver disease, who were candidates for orthotopic liver transplantation. Results: Selective angiography agreed with the Doppler ultrasound findings of patency, flow direction, and diameter of the extrahepatic portal vein in 84%, 73%, and 79% of the children, respectively. Important additional information was obtained from selective angiography in only five of the 62 children (8%). Selective angiography showed an anomaly of the hepatic artery in 21 of the 62 children (33%). In 18 out of these 21 children (85%), an anomaly of the hepatic artery was already visible on the abdominal aortogram. Conclusion: Selective angiography did not play any significant role in the detection of an anomaly of the hepatic artery and should only be done if the Doppler ultrasound findings of the portal vein are inconclusive or if abdominal aortography cannot provide reliable information about the hepatic artery. For the evaluation of the portal vein and hepatic artery, we recommend Doppler ultrasound and abdominal aortography, a less invasive angiographic procedure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900111
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Noisy intracranial tumours (1994)
    Springer
    Acta neurochirurgica 131 (1994), S. 215-222 
    Details
    ISSN: 0942-0940
    Keywords: Sound recording ; intracranial tumour ; intracranial aneurysm ; noninvasive detection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Transorbital sound recordings were obtained from 21 patients with intracranial tumours, 28 patients with intracranial aneurysms and 20 control patients. The group of patients with tumours consisted of 12 patients with gliomas, of whom 6 had low-grade gliomas and 6 had high-grade gliomas, and 9 patients with meningiomas. All patients with gliomas, including the subgroup of patients with low-grade gliomas, as well as patients with aneurysms, had significantly different sound recordings in comparison to control patients. Recordings from glioma patients did not differ significantly from recordings of aneurysm patients. Radiological evaluation of the tumours was performed in order to establish which tumour characteristics were associated with abnormal sound recordings. It was found that the type of tumour, i.e., histology or malignancy grade, was a significant associated factor, whereas other tumour characteristics such as size, mass effect and amount of oedema were not. In conclusion, patients with specific types of intracranial tumours produced abnormal sounds which could not be distinguished from abnormal sounds recorded in patients with aneurysms. These results may be important for the interpretation of sounds recorded for the detection of intracranial pathology, especially for aneurysm screening.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01808616
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    On the principles underlying the diagnosis of brain tumours — A survey article (1995)
    Springer
    Acta neurochirurgica 135 (1995), S. 1-11 
    Details
    ISSN: 0942-0940
    Keywords: Brain tumour ; brain oedema ; blood brain barrier
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A survey is given of the principles underlying the diagnosis of brain tumours. Traditionally diagnosis and localization of brain tumours have been based upon morphological criteria. Currently unsurpassed levels in imaging of anatomical details and topographical relations by the techniques of computed tomography (CT) and magnetic resonance imaging (MRI) have been achieved. The techniques of positron emission tomography (PET) and of magnetic resonance spectroscopy (MRS), which depict also metabolic and blood flow aspects, provide a refinement of our knowledge on the metabolism, structure and pathophysiological relations of a tumour to the surrounding parenchyma. Recent advances in the recording of function-related changes of the cerebral electro-magnetic field allow a better definition of critical functional areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02307407
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The oculocerebrocutaneous (Delleman-Oorthuys) syndrome (1999)
    Springer
    Neuroradiology 41 (1999), S. 55-59 
    Details
    ISSN: 1432-1920
    Keywords: Key words Oculocerebrocutaneous syndrome ; Delleman-Oorthuys syndrome ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe two cases of the so-called oculocerebrocutaneous syndrome, also known as the Delleman-Oorthuys syndrome. Both patients had characteristic congenital anomalies of the orbit, central nervous system and skin. The ocular and cerebral lesions were studied with CT and MRI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050706
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Doppler ultrasound and angiography of the vasculature of the liver in children after orthotopic liver transplantation: a prospective study (1995)
    Springer
    Pediatric radiology 25 (1995), S. 517-524 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Despite the availability of Doppler ultrasound, angiography still forms part of the protocol for evaluating children after orthotopic liver transplantation (OLT) at our department. To investigate whether Doppler ultrasound is a reliable method for evaluating the patency of the hepatic artery, portal vein, inferior vena cava, and the anastomotic site of the portal vein in children after OLT, we performed a prospective study in which Doppler ultrasound was compared with angiography in 38 children with 40 transplants (ten examinations on clinical demand and 49 examinations according to protocol). Good correlation was found in relation to demonstrating a patent hepatic artery (sensitivity 96% and specificity 100%). Two false-negative Doppler ultrasound results were attributable to technical difficulties and rejection. For evaluating the patency of the portal vein, Doppler ultrasound agreed with angiography in 58 of the 59 examinations (98%). The one and only false-positive angiography result was explained by inadequate opacification. Doppler ultrasound visualized stenosis of the portal vein three times more often than angiography. In seven children, Doppler ultrasound findings suspicious of pathology of the inferior vena cava were confirmed using cavography or surgery. Doppler ultrasound proved to be a reliable technique for evaluating the patency of the hepatic artery, inferior vena cava, and portal vein and the anastomotic site of the portal vein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02015783
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    Paper (German National Licenses)
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