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  • 1
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Aneurysma ; Transkranielle Duplexsonographie ; Embolisation ; Subarachnoidalblutung ; Key words Aneurysm ; Transcranial Duplex sonography ; Coil embolization ; Subarachnoid hemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary We investigated 88 Patients with a total of 102 angiographically diagnosed intracranial aneurysms by means of transcranial colour coded Duplex sonography (TCCD) during a time period of 15 months. Both the size and teh localization of teh aneuryms were determined. Seventy aneurysms (77%) with a diameter of 16±8 mm (6-55mm) were detectable, with excellent visualization in 36 (42%), moderate visualization in 34 (40%), and no sufficient visualization in 16 (16%) aneurysms, respectively. In another 16 cases (16%) there was no sufficient vone window. Thrombotic material inside the aneurysm was detectable in 16/20 cases (75%), visualization of coil embolized aneurysms in 12/25 patients (48%). TCCD allows the follow up of cerebral aneurysms, with the detection of thrombosis and treatment effects after embolization. The method is not valid for the detection of intracranial aneurysms
    Notes: Zusammenfassung Innerhalb eines Zeitraumes von 15 Monaten wurden 88 Patienten mit 102 angiographisch nachgewiesenen intrakraniellen Aneurysmen unter Verwendung einer 2-MHz-Sonde mit der transkraniellen farbkodierten Duplexsonographie (TCCD) untersucht. Es wurden die Größe und der genaue Aneurysmasitz bestimmmt. Insgesamt konnten 70 (77%) Aneurysmen mit einem Durchmesser von 16±8 mm (6–55 mm) dargestellt werden. Eine sehr gute Darstellung der Aneurysmen gelang bei 36 (42%), eine mäßige bei 34 (40%) Aneurysmen, 16 (16%) Aneurysmen konnten trotz ausreichender Bildqualität nicht dargestellt werden. Bei weiteren 16 (16%) Aneurysmen war kein ausreichendes Knochenfenster vorhanden. Thrombosierte Anteile innerhalb der Aneurysmen konnten bei 16 (75%) von 20, der mit Coils behandelte Anteil bei 12 (48%) von 25 Aneurysmen erfolgreich dokumentiert werden. Die Methode ist zum Nachweis von teilthrombosierten Anteilen, von Behandlungserfolgen nach Coilembolisation und zur Verlaufskontrolle nicht behandelbarer Aneurysmen geeignet. Die Darstellbarkeit kleiner Aneurysmen ist begrenzt durch das Auflösungsvermögen und die teilweise ungünstigen Beschallungswinkel, somit eignet sich die TCCD nicht als Screeningmethode zum Nachweis von Aneurysmen.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1920
    Keywords: Key words Aneurysm ; Transcranial colour-coded duplex sonography ; Embolisation ; Subarachnoid haemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We examined 72 patients with 89 angiographically confirmed intracranial aneurysms, using transcranial colour-coded duplex sonography (TCCD) to determine the location and size of the aneurysm. The patients were admitted for coil embolisation of their aneurysm following subarachnoid haemorrhage or because of a cranial nerve palsy. Using a 2/2.25 MHz transducer, 42 aneurysms (47 %) were seen satisfactorily through the temporal bone window or foramen magnum. In 24 cases (27 %) image quality was insufficient as a result of a poor bone window, of the aneurysm having a diameter of less than 6 mm or of its being in an unfavourable location. In 23 other cases (26 %) it was not possible to detect the aneurysm. Thrombosed structures could be demonstrated using TCCD in 8 of 12 giant intracavernous or basilar artery aneurysms, and in 15 of 19 aneurysms treated by platinum coil embolisation. TCCD offers a noninvasive method for monitoring progressive intra-aneurysmal thrombosis following coil embolisation and for follow-up of patients with untreatable fusiform aneurysms, should this be required. Detection of small aneurysms is limited by spatial resolution and insonation angles.
    Type of Medium: Electronic Resource
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