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  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg
    Keywords: Gynecology ; Nuclear medicine ; Pathology ; Surgery
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    ISBN: 9783540410416
    Language: English
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  • 2
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg
    Keywords: Medizin ; Leber ; Tumorembolisation ; Clinical medicine ; Interventional radiology ; Medicine ; Nuclear medicine ; Oncology ; Radiology, Medical ; Radiotherapy ; Leber ; Tumorembolisation
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    ISBN: 9783540354215
    RVK:
    Language: English
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  • 3
    Online Resource
    Online Resource
    Berlin : Springer
    Keywords: Kernspintomografie ; Nuclear medicine ; Radiology, Medical ; Radiotherapy ; Kernspintomografie
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (XXVII, 1511 S.) , zahlr. Ill., graph. Darst.
    ISBN: 9783540293552
    Language: English
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  • 4
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg
    Keywords: Internal medicine ; Radiology, Medical
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    ISBN: 9783540231028
    Language: English
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  • 5
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg
    Keywords: Angiography ; Cardiology ; Gastroenterology ; Oncology ; Radiology, Medical
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    ISBN: 9783540235538
    Language: English
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  • 6
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg
    Keywords: Cardiology ; Radiology, Medical
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    Edition: Second Edition
    ISBN: 9783540255239
    DDC: 616.1207575
    Language: English
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1352-8661
    Keywords: magnetic resonance ; heart ; rapid imaging ; fast spin-echo
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics
    Notes: Abstract Purpose: To implement and evaluate two robust methods for T1-and T2-weighted snapshot imaging of the heart with data acquisition within a single heart beat and suppression of blood signal. Methods: Both Tl-and T2-weighted diastolic images of the heart can be obtained with half Fourier single-shot turbo spin echo (HASTE) and turbo fast low-angle shot (turboFLASH) sequences, respectively, in less than 350 ms. Signal from flowing blood in the ventricles and large vessels can be suppressed by a preceding inversion recovery preparing pulse pair (PRESTO). Fifteen volunteers and five patients have been evaluated quantitatively for signal-to-noise ratio (SNR) contrast-to-noise ratio (CNR) and flow void and qualitatively for image quality, artifacts, and black-blood effect. Results: Both PRESTO-HASTE and PRESTO-turboFLASH achieved consistently good image quality and blood signal suppression. In contrast to gradient-echo (GRE) echo-planar imaging techniques, (EPI) HASTE and turboFLASH are much less sensitive to local susceptibility differences in the thorax, resulting in a more robust imaging technique without the need for time-consuming system tuning. Compared to standard spin-echo sequences with cardiac triggering, HASTE and turboFLASH have significantly shorter image acquisition times and are not vulnerable to respiratory motion artifacts. Conclusion: PRESTO-HASTE and PRESTO-turboFLASH constitute suitable methods for fast and high-quality cardiac magnetic resonance imaging (MRI).
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 43 (1998), S. 2463-2469 
    ISSN: 1573-2568
    Keywords: TRANSJUGULAR INTRAHEPATIC PORTOSYSTEMIC SHUNT ; SCLEROTHERAPY ; CIRRHOSIS ; PORTAL HYPERTENSION ; VARICEAL BLEEDING
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Nonsurgical reduction of portal hypertension bytransjugular intrahepatic portosystemic shunt (TIPS) iswidely used for prevention of variceal rebleeding(elective TIPS). Information is limited about the value of emergency TIPS for acute varicealbleeding unresponsive to endoscopic and drug therapy.The aim of the present study was therefore to determinewhether the effects and complications differ between emergency and elective TIPS in patients withcirrhosis of the liver. TIPS was performed in 11patients with acute variceal bleeding unresponsive toendoscopic treatment and 22 patients in stable condition after an episode of variceal bleeding. Clinicalexamination, blood sampling, Doppler sonography of TIPSflow, and upper gastrointestinal endoscopy wereperformed at days 1, 7, and 30 and at three-month intervals after TIPS. Mean follow-up was 549(1-987) days. Bleeding was controlled by emergency TIPSin 10/11 patients. Probability of survival was notdifferent after emergency and elective TIPS (0.73 vs 0.84 at one year). Early rebleeding (≤2weeks) occurred more often after emergency TIPS (3/11 vs0/22 patients; P = 0.03), but there was no significantdifference in late rebleeding. Occlusion of TIPS was more frequent after emergency TIPS.Occurrence of TIPS stenoses was identical in both groups(4/11 vs 8/22). De novo or deterioration of preexistinghepatic encephalopathy was similar (18% vs 24%; NS). Itis concluded that TIPS is effective for control of acutevariceal bleeding unresponsive to endoscopic and drugtreatment. Early rebleeding and stent occlusion occurredmore often after emergency TIPS. Late rebleeding, complications, andlong-term survival did not differ from electiveTIPS.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Diseases of the colon & rectum 43 (2000), S. 205-212 
    ISSN: 1530-0358
    Keywords: Intestine, hernia ; Pelvic organs, prolapse ; Magnetic resonance (MR), motion studies ; Intestine, magnetic resonance (MR) ; Pelvic organs, magnetic resonance (MR)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: Enteroceles are in part difficult to detect but a frequent finding in pelvic floor disorders. The aim of this study was to evaluate magnetic resonance colpocystorectography in the diagnosis of enteroceles. METHODS: In this prospective study 11 volunteers and 55 patients with pelvic floor descent were examined. In addition to magnetic resonance colpocystorectography, a dynamic cystoproctography was performed on 34 patients. Opacification of organs was used. An enterocele was assessed in relationship to the pubococcygeal reference line (magnetic resonance colpocystorectography) or the width of the rectovaginal space (dynamic cystoproctography). A clinical gynecologic examination served as reference. RESULTS: The clinical examination diagnosed an enterocele in 43, magnetic resonance colpocystorectography in 49, and dynamic cystoproctography in 14 cases. Magnetic resonance colpocystorectography further subdivided the enteroceles according to their contents (mesenteric fat or fluid, 12; small bowel, 32, large bowel, 3; and rectosigmoidocele, 2). Magnetic resonance colpocystorectography proved statistically significantly superior to dynamic cystoproctography (15 cases) and the reference. Sensitivity and specificity of magnetic resonance colpocystorectography were 100 percent each. It was able to reveal clinically missed enteroceles as being peritoneoceles associated with a rectocele or a uterovaginal prolapse (10 cases). CONCLUSION: Magnetic resonance colpocystorectography is a promising method for diagnosis of enteroceles, because hernial canal, sac, and contents are reliably identified.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1573-0743
    Keywords: magnetic resonance imaging ; myocardial contraction ; myocardial ischemia ; myocardial perfusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose: The purpose of this study is to assess the reliability of multislice MR perfusion imaging in comparison to regional wall function and nuclear medicine and to test different qualitative and quantitative parameters for perfusion assessment. Material and methods: 15 patients with chronic myocardial ischemia underwent CINE and first-pass perfusion MR imaging. Functional myocardial imaging was performed using a segmented CINE FLASH sequence and systolic myocardial wall thickening was assessed after semiautomated segmentation. MR first-pass perfusion studies were performed using a multislice saturation recovery TurboFLASH sequence. Different parameters were calculated for assessment of hypoperfused segments and results of MR imaging compared to 99mTc-SestaMIBI SPECT. Results: MR perfusion imaging showed a sensitivity of 72% and a specificity of 98%. In combination with MR CINE imaging and wall thickening analysis we calculated a sensitivity of 100% and a specificity of 93%. Qualitative and quantitative perfusion parameter analysis showed significant differences between normal and hypoperfused segments for the signal intensity increase (p 〈 0.001), the signal intensity upslope (p 〈 0.001) as well as for the myocardial mean transit time (p 〈 0.001). Conclusion: The combination of systolic wall thickening analysis and myocardial perfusion can markedly improve the sensitivity of MRI in depiction of LV myocardial perfusion abnormalities. For assessment of hypoperfusion, different quantitative and qualitative parameters can be calculated showing significant differences between normal state and hypoperfusion.
    Type of Medium: Electronic Resource
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