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  • 1
    Electronic Resource
    Electronic Resource
    Diagnostic value of ultrasound in duodenal stenosis (1986)
    Springer
    Abdominal imaging 11 (1986), S. 135-138 
    Details
    ISSN: 1432-0509
    Keywords: Duodenal stenosis, ultrasound ; Annular pancreas ; Duodenal wall cysts ; Duodenal polyps
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Radiology and endoscopy are usually used to diagnose stenosis of the duodenum, but the cause of the stenosis may still escape detection. Three pathologic processes — multiple duodenal polyps, duodenal wall cysts, and annular pancreas — are presented to demonstrate how ultrasound, under specific conditions, can provide decisive diagnostic information. The cause of the stenosis may be made accessible to sonographic study through administration of oral fluids and intravenous hyoscin-n-butylbromid (Buscopan®).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035054
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The Radiological Management of Biliary Complications Following Liver Transplantation (1996)
    Springer
    CardioVascular & interventional radiology 19 (1996), S. 242-247 
    Details
    ISSN: 1432-086X
    Keywords: Key words: Liver transplantation—Biliary complications—Bile ducts—Interventional procedures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose: Biliary complications contribute significantly to morbidity and mortality in the liver transplant recipient. Surgery has been the mainstay of therapy, but interventional radiological techniques have made significant progress. Methods: Diagnostic percutaneous transhepatic cholangiography (PTC) was performed in 12 patients; percutaneous transhepatic drainage (PTD) was performed in 10 patients. Additional interventional procedures included laser lithotripsy, biopsy, dilatation, and stent implantation. Results: In 6 patients PTC revealed anastomotic, and in 6 patients nonanastomotic biliary strictures. Four patients had intrahepatic stones. Biliary strictures were treated by implantation of Palmaz stents in 5 of 6 patients with anastomotic strictures, and in 3 of 6 patients with nonanastomotic strictures. The intrahepatic stones were fragmented with dye laser lithotripsy under cholangioscopic control in 3 of 4 patients. One spontaneous stent migration after 24 months and one stent occlusion were observed; the remaining stents are still patent. Patients with anastomotic strictures had a more favorable outcome: 5 of 6 of these patients are still alive and symptom-free after an average of 27.4 months, but only 3 of 6 patients with nonanastomotic strictures are alive after an average of 9.8 months. Conclusion: The different outcomes in patients with anastomotic versus nonanastomotic strictures may be explained by the different causes of these types of stricture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002709900049
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Clinical significance of abnormalities of the gastrointestinal tract detected by abdominal ultrasound (1988)
    Springer
    Digestive diseases and sciences 33 (1988), S. 257-262 
    Details
    ISSN: 1573-2568
    Keywords: target sign ; bowel conglomerates ; solid mass lesions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In order to define the clinical significance and the need for further clinical work-up in patients where abnormalities of the stomach or bowel are found by ultrasound, we performed a prospective study on 100 patients with such findings. Of all patients, 35% were found to have a malignant tumor, 73% had a diagnosis as made by reference methods which was probably (18%) or definitively (55%) related to the US finding. Eighteen percent had definitive false positive findings, in 9% no final diagnosis was obtained. Thus, a positive predictive value of 80% was calculated for the US finding of a mass or a target sign related to bowel or stomach in US. The positive predictive value was lowest for target signs related to the bowel (75%) and highest for bowel conglomerates (100%). Patients with target signs of the stomach, bowel conglomerates, or masses were more likely to have malignant disorders (72%) than those with target signs related to the bowel (16%). We conclude from this study that the ultrasound finding of a target sign or a mass related to stomach or bowel has a high clinical relevance and should in any case worked up by appropriate investigations when clinical consequences are possible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01535746
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Primary staging of lymphomas: cost-effectiveness of FDG-PET versus computed tomography (2000)
    Springer
    European journal of nuclear medicine 27 (2000), S. 1457-1464 
    Details
    ISSN: 1619-7089
    Keywords: Cost-effectiveness analysis Staging Positron emission tomography Computed tomography Lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The objective of this study was to measure the incremental cost-effectiveness of 2-(fluorine-18) fluorodeoxyglucose positron emission tomography (FDG-PET) versus computed tomography (CT) as diagnostic procedures in the primary staging of malignant lymphomas. The study was based on 22 patients of a clinical study who underwent the diagnostic procedures at Ulm University Hospital between April 1997 and May 1998. Direct costs of FDG-PET and CT, including staff, materials, investment, maintenance and overheads, were valued using a micro-costing approach. The effectiveness of both diagnostic procedures was measured as the percentage of correctly staged patients, given a gold standard for staging. The incremental cost-effectiveness ratio was the main outcome measure. Costs per patient of FDG-PET were 257 euros for FDG production and 704 euros for the FGD-PET scan, thus totalling 961 euros (in 1999 prices). The cost per patient of CT scans was found to be 391 euros. Verified PET findings induced an upstaging in four patients such that the effectiveness was 81.8% (18/22) for CT and 100% (22/22) for PET. Incremental cost-effectiveness ratios (interpreted as the additional costs of a more effective diagnostic strategy per additional unit of effectiveness, i.e. additionally correctly staged patient, achieved) were 478 euros per correctly staged patient for CT versus "no diagnostics" and 3133 euros for FDG-PET versus CT. Great potential for cost saving was identified in sensitivity analyses for FDG-PET. It is concluded that diagnostic accuracy and the costs of the diagnostic procedures could be measured precisely. FDG-PET was more accurate than CT. Decision-makers who consider savings in treatment costs significant may find the cost-effectiveness ratio of PET to lie within an acceptable range. However, more research is needed to assess the long-term treatment and cost effects of more accurate staging. There is significant potential to improve the technical efficiency of PET.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002590000323
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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