Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-1084
    Keywords: Iotrolan ; CT ; MR ; Arthrography ; Gd-DTPA ; Gleuchumeral joint
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The role of conventional arthrography versus computed tomography (CT) arthrography of the glenohumeral joint using iotrolan was evaluated in patients with different shoulder problems. In addition, a diagnostic combination of conventional and CT arthrography was compared with magnetic resonance (MR) arthrography of the glenohumeral joint. Two diagnostic protocols were used. Protocol 1: conventional followed after 30 min by CT arthrography of 37 joints using a double contrast technique with iotrolan 300. Protocol 2: conventional followed after 90–180 min by MR arthrography in 20 patients using a single-contrast technique with 10 ml iotrolan 300 and 1 ml gedopentetate dimeglumine 500 mM. Ten patients also underwent CT arthrography. Neither patient group experienced contrast-related complications. Image quality was good for all conventional arthrograms, excellent in 45/47 CT arthrograms and good in 20 MR arthrograms. CT and MR arthrography were diagnostically valuable in many patients. We conclude that glenohumeral joint evaluation should be perfomed first using conventional or CT arthrography. Iotrolan has proven to be highly reliable and safe in these applications. Iotrolan in combination with gadopentetate dimeglumine, permits MR arthrography following completion of the standard examinations if necessary.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 39 (1999), S. 971-978 
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Computertomographie ; Leber ; Lebertumoren ; Kontrastmittel ; Key words Computed tomography ; Liver parenchyma ; Liver tumors ; Contrast media
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Purpose: Scan protocol optimization and value of a multi-row-detector helical CT (MS-CT) in comparison to a single-row-detector spiral CT (SS-CT) for imaging of focal liver lesions. Materials and Methods: The ability of a MS-CT with different scan parameters (slice thickness, scan mode, table-speed, reconstruction interval) for the detection of low-contrast objects was evaluated with a liver phantom and compared to a SS-CT. The clinical value (detection and characterization) of MS-CT with various slice thicknesses (3,75, 5, 7,5 mm) was compared intraindividually in 20 patients with a total of 43 benign and malignant lesions. Results: In the experimental study the MS-CT reached the same detection rates for low-contrast objects despite a three-times faster scan-time compared to a SS-CT. The slice thicknesses of 3,75 and 5 mm proved to be optimal and were superior to a thickness of 7,5 mm for the detection and characterization of liver lesions. A distinct separation between arterial and portal venous phase was achieved by this protocol. Conclusion: The MS-CT allows a reliable acquisition of the entire liver parenchyma in defined perfusion phases. It improves the detection and characterization of focal liver lesions with optimized scan parameters with a significantly faster scan time than with the SS-CT.
    Notes: Zusammenfassung Untersucht wurden die Optimierung der Untersuchungsprotokolle und die Wertigkeit der Mehrzeilendetektor-Spiral-CT (MZ-SCT) im Vergleich zur Einzeilendetektor-Spiral-CT (EZ-SCT) in der Diagnostik fokaler Leberläsionen. Die Fähigkeit der MZ-SCT, mit unterschiedlichen Scanparametern (Schichtdicke, Scanmodus, Tischvorschub, Rekonstruktionsintervall) Niedrigkontrastobjekte zu detektieren wurde anhand eines Leberphantoms mit der EZ-SCT verglichen. Die spezielle klinische Bedeutung (Detektion und Charakterisierung) einer MZ-SCT mit verschiedenen Schichtdicken (3,75, 5, 7,5 mm) wurde beim intraindividuellen Vergleich von 20 Patienten mit insgesamt 43 benignen und malignen Lebertumoren evaluiert. Die MZ-SCT weist in der experimentellen Studie trotz 3fach schnellerer Scanakquisition die gleiche Erkennbarkeit von Niedrigkontrastobjekten gegenüber der EZ-SCT auf. Dabei stellen sich als optimale Schichtdicken 3,75 und 5 mm heraus. Diese Schichtdicken erweisen sich auch in der klinischen Studie für die Detektion und Charakterisierung von Leberläsionen gegenüber einer Dicke von 7,5 mm als überlegen. Hiermit kann dennoch eine scharfe Trennung zwischen der arteriellen und portalvenösen Phase erzielt werden. Die MZ-SCT erlaubt die Darstellung der gesamten Leber in definierten Organperfusionsphasen. Sie verbessert die Detektion und Charakterisierung von fokalen Läsionen durch optimierte Scanparameter bei gleichzeitig deutlich schnellerer Datenakquisition als mit der EZ-SCT.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Mehrschicht-Spiral-CT ; Mehrzeilen-Spiral-CT ; Aortenerkrankungen ; Key words Multi-slice helical CT ; Aortic diseases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Acute diseases of the central arteries require an immediate investigation. An efficient, fast and reliable diagnosis is necessary because of the high mortality, if the patient remains untreated. These requirements are perfectly fulfilled by the new CT-techniques. Methods. Suspected aortic diseases were examined with a new multi-slice helical CT. The thoracic or the abdominal aorta as well as the entire vascular tree from the supraaortic branches to the inguinal arteries were investigated with different CT protocols. The slice-thickness and the scan mode were changed while the total examination time was kept constant for the first two groups. In the third group a monophasic examination was compared to a biphasic one. Results. In the diagnosis of acute aortic diseases multi-slice helical CT proved to be a fast and reliable method with all scan protocols. The objective measurements of contrast homogeneity and image quality were comparable in the first two groups. The monophasic contrast medium injection protocol was superior to the biphasic administration mode. Conclusions. Multi-slice helical CT appears to be a very effective approach for the diagnosis of acute aortic diseases and seems to be the new gold standard.
    Notes: Zusammenfassung Akute Erkrankungen der Aorta im Körperstamm stellen eine lebensbedrohliche Situation für den betroffenen Patienten dar, so daß ein rasches Handeln zwingend erforderlich ist. Voraussetzung hierfür ist eine leistungsfähige, schnelle und zuverlässige Diagostik, die von der neuen CT-Technik in nahezu idealer Weise realisiert werden kann. Methoden: Bei klinischem Verdacht auf eine Aortenerkrankung wurden Untersuchungen mit einer neuen Mehrzeilen-Spiral-CT (MZ-SCT) durchgeführt. Die Aorta thoracalis, die Aorta abdominalis oder der gesamte Gefäßbaum von den supraaortalen Ästen bis zu den Inguinalarterien wurden mit verschiedenen Protokollen untersucht. In den ersten beiden Gruppen wurden bei konstanter Untersuchungszeit die Schichtdicke und die Tischvorschubgeschwindigkeit variiert. In der dritten Gruppe wurde eine monophasische mit einer biphasischen Untersuchung verglichen. Ergebnisse: In der Diagnostik von aortalen Erkrankungen erwies sich die MZ-SCT als schnelle und verläßliche Methode mit allen Protokollen. Die objektive Messung der Kontrasthomogenität und die subjektiven Abbildungsqualitäten waren in den ersten beiden Gruppen vergleichbar. Das monophasische Vorgehen war der biphasischen Untersuchung überlegen. Schlußfolgerung: Die MZ-SCT ist bei Anwendung geeigneter Untersuchungsprotokolle heute der Goldstandard in der Diagnostik akuter Aortenerkrankungen.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European radiology 9 (1999), S. 1625-1628 
    ISSN: 1432-1084
    Keywords: Key words: Clear-cell chondrosarcoma ; Larynx ; Computed tomography ; Inner surface image ; Surface-rendering image
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. A case of a large low-grade mixed clear-cell and conventional chondrosarcoma of the larynx is reported involving the paraglottic space, the cricoid and thyroid cartilage and characterized by an unusual long clinical course over 22 years, although multiple recurrences occurred without developing metastases. Computed tomography suggests diagnosis by detecting calcifications and adequately demonstrates the extension of the tumor. Innersurface and surface-rendering images document the airway stenosis in all directions. The unusual feature of this case consists in the peculiar histopathological differentiation of the observed chondrosarcoma showing a large clear-cell component.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-1084
    Keywords: Key words: Breast neoplasms ; Breast MR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The objective of this study was to assess the value of contrast-enhanced dynamic breast imaging in patients with carcinoma of unknown primary (CUP). Fourteen patients presenting with metastatic disease compatible with breast cancer (axillary lymph node metastasis: n = 6; supraclavicular lymph node metastasis: n = 1; bone metastasis: n = 3; liver metastasis: n = 3; lung metastasis: n = 1), who had no evidence of tumor in X-ray mammograms and ultrasound, underwent bilateral dynamic breast MR imaging. Suspicious lesions were localized preoperatively using a stereotactic device for MR-guided localization procedures. Magnetic resonance imaging revealed suspicious lesions in 9 of 14 patients. Histopathology revealed invasive carcinoma of the breast in 6 of these patients. Two enhancing lesions were fibroadenomas; one proved to be sclerosing adenosis. In 5 patients MR imaging showed no abnormality. Follow-ups performed up to 1 year after initial treatment revealed no breast cancers in these 5 patients. In patients with metastatic disease of unknown primary, MRI of the breast depicts the primary in a considerable number of cases with normal conventional evaluation.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 39 (1999), S. 621-623 
    ISSN: 1432-2102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...