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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 35 (1993), S. 234-237 
    ISSN: 1432-1920
    Keywords: Bones, dysostoses ; Fibrous dysplasia ; Magnetic resonance imaging ; Osteochondrodysplasias
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Five patients with biopsy-proven craniofacial fibrous dysplasia underwent MRI with T1- and T2-weighted sequences and a gadolinium-enhanced T1-weighted spin-echo sequence. Low to intermediate signal intensity was usually seen in the largest part of the lesion on both spin-echo sequences, but smaller regions of hyperintensity on T1- and T2-weighted images and intermediate signal intensity throughout a lesion on T1-weighted images were also seen. All lesions enhanced but only two became iso- or hyperintense compared to fat. High clinical and pathological activity in three cases correlated with high signal intensity on both spin-echo sequences and with strong enhancement in two of the three. The presence of large veins or sinusoids on pathological examination did not correlate with the enhancement pattern.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of orofacial orthopedics 51 (1990), S. 297-308 
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary One of the most important goals of combined orthodontic-surgical treatment is the harmonization of the soft tissue profile. For a reliable prognosis of the soft tissue profile after surgical intervention, the soft tissue response to hard tissue displacements should be analysed in regard to horizontal and vertical effects. The material consists of the pre- and postusurgical cephalograms of 40 patients who underwent a LeFort I osteotomy, 54 patients with displacement of the mandible by means of a sagittal split (Obwegeser/DalPont), and 42 patients with combined upper and lower repositioning. In contrast with recent investigations, the analysis of the soft tissue response was not based on the conventional landmarks. Instead of this, changes of the entire soft tissue profile were analysed in relation with the underlying outline of the hard tissue. The processed material resulted in numerical data which permit the elaboration of a profile prognosis with distinction of horizontal and vertical effects also taking the error assessment into account.
    Notes: Zusammenfassung Die Herstellung eines harmonischen Weichteilprofils stellt eines der wichtigsten Ziele der kombinierten kieferorthopädisch-chirurgischen Therapie dar. Zur verläßlichen Prognose des postoperativen Profilverlaufs ist es erforderlich, die Reaktion der Weichteildecke auf Hartgewebsverlagerungen in der Horizontalen und Vertikalen zu differenzieren. Anhand von 40 Patienten, bei denen eine LeFort-I-Osteotomie durchgeführt wurde, 54 Patienten mit Verlagerung des Unterkiefers nachOberwegeser/DalPont sowie 42 Patienten mit kombinierter Oberkiefer/Unterkiefer-Osteotomie wird der Einfluß von Hartgewebsverschiebungen auf den Profilverlauf untersucht. Im Gegensatz zu bisherigen Untersuchungen werden dabei nicht die üblichen kephalometrischen und Weichteilprofilpunkte zugrunde gelegt. Statt dessen wird die Änderung des vollen Profilverlaufs in Abhängigkeit von der darunterliegenden Hartgewebskontur analysiert. Die Auswertung dieses Materials liefert die notwendigen Daten für ein Verfahren, das in Abhängigkeit von der durchzuführenden Operation eine nach horizontalen und vertikalen Effekten differenzierte Profilprognose inklusive Fehlerabschätzung gestattet.
    Type of Medium: Electronic Resource
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