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  • 1
    ISSN: 1619-7089
    Keywords: Iodine-123 metaiodobenzylguanidine single photon emission tomography ; Arrhythmogenic right ventricular disease ; Cardiac sympathetic nerve system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Arrhythmogenic right ventricular disease (ARVD) is a disease of unknown origin that primarily affects the right ventricle and is characterized by ventricular tachyarrhythmias which may lead to syncope and even, though rarely, sudden cardiac death. In 25 patients with ARVD, sympathetic innervation of the left ventricle was assessed by iodine-123 metaiodobenzylguanidine single photon emission tomography (1231-MIBG SPET). In addition, thallium-201 SPET was performed. The diagnosis of ARVD was made by an electrophysiological study and right and left heart catheterization including right ventricular endomyocardial biopsy. Ischaemic heart disease was excluded by coronary angiography. A group of seven patients without any evidence of heart disease served as a control group. Twenty-two of the 25 patients showed reduced uptake of 123I-MIBG. The abnormal areas were located predominantly in posterior and posteroseptal segments of the heart. No focus of increased 123I-MIBG activity could be demonstrated. No patient had signs of left ventricular involvement on left ventricular angiography. In contrast to the results of the 123I-MIBG SPET, those of 201TI SPET were normal in 16 patients. The remaining nine patients showed areas of slight hypoperfusion not correlated with the reduced 123I-MIBG uptake. 123I-MIBG scintigraphy allows detection of left ventricular adrenergic dysinnervation in ARVD patients without morphological or functional abnormalities of the left ventricle.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Positronen-Emissions-Tomographie (PET) ; Neurologie ; Neurochirurgie ; Psychiatrie ; Key words Positron emission tomography ; Neurology ; Neurosurgery ; Psychiatry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary To date, positron emission tomography (PET) is the most powerful method for the in-vivo investigation of human brain metabolism. Besides extensive application of this technology in the neurosciences, PET is also being increasingly used as a clinical tool. However, despite its acceptance in clinical practice, a major obstacle is its high costs. The present article reviews the literature on the clinical use of PET in neurology, neurosurgery, and psychiatry in order to substantiate the clinical indications for PET in these specialties as established by an interdisciplinary conference.
    Notes: Zusammenfassung Die Positronen-Emissions-Tomographie (PET) ist das derzeit leistungsfähigste Verfahren zur In-vivo-Untersuchung des zerebralen Stoffwechsels. Neben einem breitgefächerten Einsatz von PET in der neuromedizinischen Forschung findet die PET zunehmend auch Eingang in die klinische Diagnostik. Dieser Entwicklung entgegen stehen die relativ hohen Kosten, die mit diesem Verfahren verbunden sind. Die vorliegende Arbeit begründet die, in einer interdisziplinären Konferenz erarbeiteten Konsensusindikationen für den klinischen Einsatz der PET in der Neurologie, Neurochirurgie und Psychiatrie durch Aufarbeitung der einschlägigen Literatur.
    Type of Medium: Electronic Resource
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