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  • 1
    Electronic Resource
    Electronic Resource
    Caroli's disease: evaluation with MR cholangiopancreatography (MRCP) (1996)
    Springer
    Abdominal imaging 21 (1996), S. 117-119 
    Details
    ISSN: 1432-0509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900026
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  • 2
    Electronic Resource
    Electronic Resource
    CT of Nissen's fundoplication (1997)
    Springer
    Abdominal imaging 22 (1997), S. 457 -460 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Nissen's fundoplication—CT—Hiatal hernia.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The aim of this work is to describe the computed tomographic (CT) anatomy in patients who underwent Nissen's fundoplication. Forty patients (mean age = 61 years) with peptic esophagitis (nine cases), refractory gastroesophageal reflux (11 cases), and hiatal hernia (20 cases) were studied. Examinations were performed by third-generation CT equipment, with patients in the prone position after the ingestion of gastrovison and barium paste. In 34 patients, the examination demonstrated anatomical variations related to surgery, that is, the presence of a soft tissue mass at the level of the distal third of the esophagus. In four patients, a functional incompetence of the fundoplication (three cases) and a recurrent hiatal hernia (one case) were demonstrated. Our results suggest a possible application for CT study in postoperative follow up of patients who undergo Nissen's fundoplication, complementary to endoscopy and functional exams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900236
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  • 3
    Electronic Resource
    Electronic Resource
    An integrated approach to senology education: combination of a hypermedia program with a multimedia archive (1996)
    Springer
    European radiology 6 (1996), S. 532-535 
    Details
    ISSN: 1432-1084
    Keywords: Computer-assisted instruction (CAI) ; Senology education ; Multimedia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this work was to demonstrate the computerized system on senology, which combines a hypermedia application to a multimedia didactical archive, integrated with a radiological information system. These applications have been developed on Macintosch computers using the softwares Supercard and 4th Dimension. The hypermedia application deals with basic principles of anatomy as well as the radiologic semeiology and pathology through different imaging techniques in order to illustrate basic principles. Thus, students can modify their learning pathways and the timing as they wish. Limitations are related to time consumption in preparing the programs and technical difficulties in expanding them. Multimedia archive allows to classify a large number of difficult and uncommon clinical cases, creating an easily updatable teaching file in digital format which considerably improves access to stored image data, also reducing loss of films and film degredation. From initial experiences we conclude that these systems are valid devices in information and up to date for physicians dedicated to the study of breast pathology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00182489
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    MR cholangiography: techniques and clinical applications (1998)
    Springer
    European radiology 8 (1998), S. 901-910 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Bile ducts ; Biliary stones ; Biliary strictures ; Neoplasms ; Obstruction ; Pancreatic duct ; Pancreas ; Chronic pancreatitis ; MR imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Magnetic resonance cholangiography (MRCP) is a new non-invasive imaging technique for the evaluation of bilio-pancreatic disorders. Different sequences, using both breathhold and non-breathhold techniques, have been employed in order to obtain MRCP images. The authors discuss the technical aspects, particularly focusing their attention on a non-breathhold, three-dimensional, fat-suppressed turbo-spin-echo sequence, optimized on a 0.5-T magnet with 15 mT/m gradients. Clinical applications of MRCP are evaluated, presenting data from both the literature and personal experience. The main indication for MRCP study is represented by the evaluation of common bile duct obstruction, with the aim of assessing the presence of the obstruction (accuracy 85–100 %) and, subsequently, its level (accuracy 91–100 %) and its cause. The utility of associating conventional MR images to MRCP in malignant strictures in order to characterize and stage the malignant lesions is also discussed. Finally, data are presented regarding the indications and utility of MR pancreatography in the evaluation of patients with chronic pancreatitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050486
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  • 5
    Electronic Resource
    Electronic Resource
    MRI of the biliary and pancreatic ducts (1999)
    Springer
    European radiology 9 (1999), S. 1513-1522 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Bile ducts ; Biliary stones ; Biliary strictures ; Bile ducts ; Neoplasms ; Obstruction ; Pancreatic duct ; Pancreas ; Chronic pancreatitis ; MR imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Magnetic resonance Cholangiopancreatography (MRCP) is a non-invasive imaging technique able to provide projectional images of the bile ducts. Different sequences, using both breath-hold and non-breath-hold acquisition techniques, have been employed in order to obtain MRCP images. The authors discuss technical aspects, considering both three-dimensional non-breath-hold techniques and two-dimensional breath-hold, multi-slice and thick slab sequences. Clinical applications of MRCP are evaluated, presenting data from both the literature and personal experience. The main indication for MRCP study is represented by the evaluation of common bile duct obstruction, with the aim of assessing the presence of the obstruction (accuracy 85–100 %) and, subsequently, its level (accuracy 91–100 %) and its cause. The utility of associating conventional MR images to MRCP in malignant strictures, in order to characterize and stage the malignant lesion, is also discussed. Finally, data are presented regarding the indications and the utility of MR-pancreatography in the evaluation of patients with pancreatic duct anomalies and chronic pancreatitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050877
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    MR cholangiopancreatography (MRCP) at 0.5 T: technique optimisation and preliminary results (1996)
    Springer
    European radiology 6 (1996), S. 147-152 
    Details
    ISSN: 1432-1084
    Keywords: Bile ducts ; MR - Bile ducts ; neoplasms - Bile ducts ; stenosis or obstruction - Magnetic resonance ; rapid imaging - Pancreatic duct ; MR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of our study was to evaluate the feasibility of MR cholangiopancreatography (MRCP) at 0.5 T. To our knowledge no previous studies of MRCP have been performed at mid-field strength. Thirty-one patients with dilated biliary systems were examined with three-dimensional MRCP. All patients were studied with a 0.5 T superconducting magnet. A three-dimensional turbo spin-echo (TSE) sequence was acquired (TR = 3000 ms, TE = 700 ms, echo train length = 45; acquisition time = 14 min 10 s). Coronal images were post-processed with the MIP algorithm. Recently, the parameters have been optimised (TR = 3000 ms, TE = 700 ms, echo train length =128), reducing the acquisition time to 3 min. Endoscopic retrograde cholangiopancreatography (ERCP) was performed in 26 cases; 5 patients underwent percutaneous transhepatic cholangiography PTC. MRCP and ERCP images were evaluated by an experienced radiologist and an endoscopist. MRCP of diagnostic quality was acquired in all patients. Choledocholithiasis was correctly evaluated by MRCP in 12 of 12 patients, compared with 11 correct diagnoses by ERCP. The presence and the level of the stricture were accurately shown in 16 of 16 patients with MRCP and in 13 of 16 patients with ERCP. The peripheral biliary tree above the obstruction and pancreatic duct were better evaluated by MRCP in all cases. In 3 of 3 patients who had undergone bilio-enteric surgery, a correct evaluation of the site of the anastomosis was possible with MRCP. It is concluded that MRCP performed at mid-field strength allows good visualisation of the dilated biliary system. Excellent results have been obtained on comparison with ERCP. MRCP performed at mid-field strength could have the same clinical value as high field strength MRCP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00181131
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  • 7
    Electronic Resource
    Electronic Resource
    Pancreatic adenocarcinoma: combination of MR imaging, MR angiography and MR cholangiopancreatography for the diagnosis and assessment of resectability (1998)
    Springer
    European radiology 8 (1998), S. 428-434 
    Details
    ISSN: 1432-1084
    Keywords: Key words: MR imaging ; MR angiography ; MR cholangiopancreatography ; Pancreatic adenocarcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The purpose of this study was to determine the possibility of integrating MR cholangiopancreatography (MRCP) and MR angiography (MRA) to conventional MR images in the diagnosis and assessment of resectability of pancreatic adenocarcinoma. Twenty-three patients with pancreatic adenocarcinoma were prospectively examined with MR. Conventional MR images were acquired in all patients. Three-dimensional MRCP and MRA images were acquired in all patients with suspected biliary and vascular involvement. Acquisition time was less than 45 min in all cases. Images were independently evaluated by two radiologists, with final reading decided by consensus among readers. Diagnosis was confirmed with surgery in 16 patients and with percutaneous biopsy in 7. Concordance among readers was high with a kappa value of 0.83. Pancreatic adenocarcinoma was observed in all patients. Correct assessment of unresectability due to vascular involvement was found in 22 of 23 patients. Biliary obstruction was evident in 13 patients, involving the biliary and pancreatic ducts in 9 and the biliary ducts only in 4. Technical advances permit extensive use of MRI in the evaluation of abdominal pathologies. The combination of MR imaging, MRCP, and MRA can provide sufficient information for the diagnosis and assessment of resectability of pancreatic adenocarcinoma, which otherwise would require three different exams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050407
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  • 8
    Electronic Resource
    Electronic Resource
    Tubercular epididymitis and orchitis: US patterns (1997)
    Springer
    European radiology 7 (1997), S. 1076-1078 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Genitourinary tuberculosis ; Testis ; US ; Orchitis ; Genitourinary system ; Infection ; Epididymitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. For several decades tuberculosis has been adequately under control in this country, but there has been recent concern that this disease might be coming back to the forefront, due to the influx of immigrants from developing countries where tuberculosis is still rampant. In the years to come we are expecting an increase in cases of genitourinary lesions of tubercular origin, a disease which had practically disappeared in the Western world. The aim of this pictorial essay is to provide an outline of the typical US images of tubercular epididymitis and orchitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050257
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  • 9
    Electronic Resource
    Electronic Resource
    MR cholangiography (MRC) in the evaluation of CBD stones before laparoscopic cholecystectomy (1997)
    Springer
    Surgical endoscopy and other interventional techniques 11 (1997), S. 982-985 
    Details
    ISSN: 1432-2218
    Keywords: Key words: CBD stones — Laparoscopic cholecystectomy — MR Cholangiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The aim of our work was to evaluate the predictive value of MR cholangiography (MRC) in detecting CBD stones before laparoscopic surgical treatment. Methods: MRC was performed as a unique preoperative imaging modality in 45 selected patients (16 male; 29 female; age range: 28–72; mean age: 54.4) before laparoscopic cholecystectomy. MRC imaging was obtained with a 3D Turbo Spin-Echo sequence (TR = 3000 ms, TE = 700 ms, Echo Train Length—128) with an acquisition time of 5 min 48 s. Diagnostic confirmation was obtained in all the cases at i.o. cholangiography. When a stone was detected it was removed by transcystic or transcholedochal approach. Results: Eighteen of the 45 patients (40%) had CBD stones. MRC correctly evaluated 16 out of 18 stones, with a resulting sensitivity of 88.9%, specificity 100%, positive predictive value 100%, negative predictive value 90%, and accuracy 95.6%. Conclusions: Despite the good results of MRC, it cannot be proposed as a screening technique to be performed in all patients submitted to laparoscopic cholecystectomy due to high cost and the limited amount of MR equipment. In conclusion, only selected patients should be submitted to MRC before laparoscopic cholecystectomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004649900507
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  • 10
    Electronic Resource
    Electronic Resource
    Die Bestimmung des Molybdänsäureanhydrids in Molybdänmetallpulver mit einer Feststellung des Angriffes von Ammoniak auf Molybdän (1944)
    Springer
    Microchimica acta 31 (1944), S. 97-101 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé (W) 1° On fait une série d'essais pour prouver le caractère de hasard des résultats obtenus lors de l'identification de la partie non réduite de la poudre de molybdène par fixation directe de l'oxygène. Les erreurs considérables proviennent des pertes par sublimation. 2° A des températures proches de la limite de sublimation du métal, l'oxydation de la poudre de molybdène ne se fait que superficiellement. 3° L'ammoniaque diluée attaque le métal. On donne des indications quantitatives à l'aide de courbes. 4° La pyridine est un bon dissolvant de l'anhydride molybdique; elle n'attaque pas le métal. 5° On utilise une microméthode décrite antérieurement pour doser colorimétriquement le molybdène, détermination de la partie réduite; on arrive ainsi à une précision de ± 0,03%.
    Notes: Zusammenfassung 1. In einer Versuchsreihe wird die Zufälligkeit der Resultate bei der Bestimmung des nicht reduzierten Anteiles in Molybdänmetallpulver nach der Methode der direkten Sauerstoffaufnahme nachgewiesen; als Ursache der untragbar großen Fehler haben die Sublimationsverluste zu gelten. 2. Bei Temperaturen eben unterhalb der Sublimationsgrenze tritt nur eine oberflächliche Oxydation des Molybdänmetallpulvers ein. 3. Verdünntes Ammoniak greift Molybdänmetall an. An Hand von Kurven werden quantitative Angaben gemacht. 4. Pyridin ist ein gutes Lösungsmittel für Molybdänsäureanhydrid und greift Molybdänmetall nicht an. 5. Eine an anderer Stelle beschriebene Methode zur mikrocolorimetrischen Bestimmung des Molybdäns wird zum Zwecke der Bestimmung des nicht reduzierten Anteiles mit Erfolg verwendet und gestattet es, diesen mit einer Genauigkeit von ± 0,03% zu bestimmen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412989
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