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  • 1
    Electronic Resource
    Electronic Resource
    Virchow-Robin spaces in childhood migraine (1999)
    Springer
    Neuroradiology 41 (1999), S. 283-287 
    Details
    ISSN: 1432-1920
    Keywords: Key words Virchow-Robin spaces ; Magnetic resonance imaging ; Childhood migraine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Virchow-Robin spaces (VRS) are pia-lined extensions of the subarachnoid space which surround penetrating arteries as they enter the brain on its surface. Using high-resolution MRI, which shows small penetrating arteries, we studied a possible association of accentuated VRS in children with tension-type headache (TTH) or migraine. We studied 58 children aged 3–14 years (mean 10.8 years) with a clinical diagnosis of migraine (31) or TTH (27), who underwent cerebral MRI, and 30 headache-free patients of the same age (mean 10.2 years) and 30 adult migraineurs with postpubertal onset of symptoms, who served as controls. The images were reviewed for structural abnormalities in the regions of the small penetrating arteries. Accentuated VRS were found in 61 % of the children with migrainous headaches and in 22 % of children of those with TTH. Prominent VRS were seen in 27 % of the control children and in only 13 % of the adults. Small infarcts and gliosis were rare in children with or without headache, but were seen in 30 % of the adult migraineurs. Our findings show that accentuated VRS are significantly more common in children with migraine than in those with TTH or headache-free controls. Detection of accentuated VRS may therefore enhance differential diagnosis of primary headaches in children, contributing to an improvement in management.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050749
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  • 2
    Electronic Resource
    Electronic Resource
    Die Magnetresonanztomographie in der Dentalradiologie (Dental-MRT) (1999)
    Springer
    Der Radiologe 39 (1999), S. 1044-1050 
    Details
    ISSN: 1432-2102
    Keywords: Schlüsselwörter MRT ; Dental CT ; Dentalradiologie ; Pulpitis ; Dentogene Zysten ; Key words MRT ; Dental CT ; Dental radiology ; Pulpitis ; Dentigerous cysts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Purpose: To demonstrate the usefulness of Dental-MRT for imaging of anatomic and pathologic conditions of the mandible and maxilla. Methods: Seven healthy volunteers, 5 patients with pulpitis, 9 patients with dentigerous cysts, 5 patients after tooth transplantation and 12 patients with atrophic mandibles were evaluated. Studies of the jaws using axial T1- and T2-weighted gradient echo and spin echo sequences in 2D and 3D technique have been to performed. The acquired images were reconstructed with a standard dental software package on a workstation as panoramic and cross sectional views of the mandible or maxilla. Results: The entire maxilla and mandibula, teeth, dental pulp and the content of the mandibular canal were well depicted. Patients with innflammatory disease of the pulp chamber demonstrate bone marrow edema in the periapical region. Dentigerous cysts and their relation to the surrounding structures are clearly shown. After contrast media application marked enhancement of the dental pulp can be found. Conclusion: Dental-MRT provides a valuable tool for visualization and detection of dental diseases.
    Notes: Zusammenfassung Ziel dieses Beitrags ist die Vorstellung der Untersuchungsmöglichkeiten des Ober- und Unterkiefers mittels Magnetresonanztomographie (Dental-MRT) und ihre Anwendung bei der Diagnose zahnmedizinischer Erkrankungen. Sieben gesunde Probanden, 5 Patienten mit Pulpitis, 9 Patienten mit dentogenen Zysten, 5 Patienten nach Zahntransplantationen und 12 Patienten mit atrophem Unterkiefer wurden untersucht. Axiale T1- und T2-gewichtete Gradientenecho- und Spinecho-Sequenzen in 2D und 3D-Technik wurden durchgeführt. Nach der Untersuchung wurden zusätzliche Panoramaschnitte und orhoradiale Rekonstruktionen des Ober- und Unterkiefers, unter Verwendung einer gebräuchlichen Dental-Software, angefertigt. Der gesamte Ober- oder Unterkiefer, Zähne, Pulpa und der Inhalt des Mandibularkanals können gut dargestellt werden. Patienten mit einer Entzündung der Zahnwurzel können ein deutliches Knochenmarksödem in der Periapikalregion zeigen. Bei Patienten mit odontogenen Zysten ist die Beziehungen zu den umgebenden Kieferstrukturen gut darstellbar. Nach Kontrastmittelgabe zeigt sich ein Enhancement in der Zahnpulpa. Die Dental-MRT ist ein nützliches Verfahren zur anatomischen Darstellung des Kieferbereichs und zahnmedizinischer Erkrankungen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001170050600
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  • 3
    Electronic Resource
    Electronic Resource
    MR-Arthrographie des Sprunggelenkes (1999)
    Springer
    Der Radiologe 39 (1999), S. 47-51 
    Details
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Sprunggelenk ; MR-Arthrographie ; Ligamentverletzungen ; Chronische Instabilität ; Osteochondrale Läsionen ; Freie Gelenkskörper ; Key words Ankle joint ; MR arthrography ; Ligamentous injuries ; Chronic instability ; Osteochondral lesions ; Loose bodies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Due to its superior soft tissue contrast conventional MRI is the imaging method of choice in the evaluation of ankle joint disorders. Conventional MR imaging can accurately demonstrate normal or acutely injured ligaments; however, in subacute and chronic injury joint fluid necessary for delineation of injured ligaments is absent and MR arthrography should be performed. MR arthrography uses the intraarticular injection of contrast material to distend the joint, yielding improved discrimination of intraarticular structures. This joint distension with MR arthrography is also helpful in the staging of osteochondritis dissecans, since in cases of unstable lesions tracking of contrast material into the interface can be more easily demonstrated. Finally, high contrast and joint distension by MR arthrography improves the detection of intraarticular loose bodies, which often require surgery. MR arthrography, although invasive, may provide additional information in various ankle joint disorders.
    Notes: Zusammenfassung Aufgrund des ausgezeichneten Weichteilkontrastes ist die konventionelle MRT die bildgebende Methode der Wahl in der Beurteilung von Sprunggelenkserkrankungen. Die konventionelle MRT kann zuverlässig normale und akut verletzte Ligamente darstellen. Im subakuten und chronischen Stadium der Verletzung fehlt jedoch oft die Gelenksflüssigkeit die für eine exakte Abgrenzung der verletzten Ligamente notwendig ist. Die MR-Arthrographie sollte in diesen Fällen durchgeführt werden, da die intraartikuläre KM-Applikation den Gelenksraum distendiert mit verbesserter Unterscheidbarkeit intraartikulärer Strukturen. Diese Gelenksdistension mit der MR-Arthrographie ist auch in der Stadiumbeurteilung der Osteochondritis dissecans hilfreich, da in Fällen von instabilen Läsionen eine KM-Umspülung des Dissekats leichter dargestellt werden kann. Schließlich verbessert die MR-Arthrographie aufgrund des hohen Kontrastes und der Gelenksdistension auch den Nachweis von intraartikulären freien Gelenkskörpern, die oft eine chirurgische Behandlung erfordern. Die MR-Arthrographie obwohl invasiv liefert wesentliche Zusatzinformationen in der Untersuchung des posttraumatischen Sprunggelenkes sowie verschiedener Sprunggelenkserkrankungen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001170050476
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  • 4
    Electronic Resource
    Electronic Resource
    Recurrent suppurative thyroiditis due to pyriform sinus fistula: a case report (1995)
    Springer
    European journal of pediatrics 154 (1995), S. 640-642 
    Details
    ISSN: 1432-1076
    Keywords: Key words Recurrent suppurative ; thyroiditis ; Pyriform sinus fistula ; Childhood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Acute suppurative thyroiditis is a rare disease, particularly in childhood. We present a case with recurrent acute suppurative thyroiditis due to a pyriform sinus fistula originating from the fourth branchial pouch. The typical symptoms of a piriform sinus fistula are recurrent left-sided pain and swelling of the neck with signs of acute bacterial inflammation. Diagnosis should be made by high resolution ultrasound, barium meal studies and endoscopic examination. During acute exacerbations treatment with antibiotics is indicated, but permanent cure can only be attained by complete fistulectomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02079068
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  • 5
    Electronic Resource
    Electronic Resource
    Recurrent suppurative thyroiditis due to pyriform sinus fistula: a case report (1995)
    Springer
    European journal of pediatrics 154 (1995), S. 640-642 
    Details
    ISSN: 1432-1076
    Keywords: Recurrent suppurative thyroiditis ; Pyriform sinus fistula ; Childhood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Acute suppurative thyroiditis is a rare disease, particularly in childhood. We present a case with recurrent acute suppurative thyroiditis due to a pyriform sinus fistula originating from the fourth branchial pouch. The typical symptoms of a piriform sinus fistula are recurrent left-sided pain and swelling of the neck with signs of acute bacterial inflammation. Diagnosis should be made by high resolution ultrasound, barium meal studies and endoscopic examination. During acute exacerbations treatment with antibiotics is indicated, but permanent cure can only be attained by complete fistulectomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02079068
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Differentiation of benign and malignant tumors of the parotid gland: value of pulsed Doppler and color Doppler sonography (1998)
    Springer
    European radiology 8 (1998), S. 1462-1467 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Parotid tumors ; Color Doppler sonography ; Pulsed Doppler sonography ; Tumor vascularization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. To establish criteria for the differentiation of benign and malignant tumors of the parotid gland using color Doppler sonography (CDS) and pulsed Doppler sonography (PDS) we examined 37 patients with parotid tumors by gray-scale ultrasound, CDS, and PDS. Tumor vascularization displayed by CDS was graded subjectively on a 4-point scale (0 = no vascularization, 3 = high vascularization). From the Doppler spectrum, the highest systolic peak flow velocity, the resistive index (RI), and the pulsatility index (PI) were calculated. There were 11 malignant and 26 benign tumors. Tumor vascularization by CDS was grade 0 or 1 in 88.5 % of benign lesions, whereas it was grade 2 or 3 in 82 % of malignant lesions (P 〈 0.0001). The highest systolic peak flow velocity was statistically significantly higher in malignant lesions than in benign lesions. Using a threshold systolic peak flow velocity of 25 cm/s, sensitivity was 72 % and specificity was 88 % for the detection of a malignant tumor. Evaluation of tumor vascularization by CDS and PDS cannot differentiate between benign and malignant parotid tumors with certainty. However, high vascularization and high systolic peak flow velocity in tumor vessels should raise the suspicion of malignancy, even if tumor morphology on gray-scale sonography indicates a benign lesion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050576
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