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  • 1
    Electronic Resource
    Electronic Resource
    Mesenteric varices demonstrated by transhepatic portography (1986)
    Springer
    Abdominal imaging 11 (1986), S. 280-282 
    Details
    ISSN: 1432-0509
    Keywords: Mesenteric varices ; Portosystemic shunt ; Portal hypertension ; Percutaneous transhepatic portography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A case of mesenteric varices draining into the left renal vein is reported. The varices were well demonstrated by percutaneous transhepatic portography and were obliterated. This disease entity should be considered in the differential diagnosis of patients with lower gastrointestinal tract hemorrhage and portal hypertension.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035090
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Tuberculous tenosynovitis of the wrist: MRI findings in three patients (1996)
    Springer
    Skeletal radiology 25 (1996), S. 569-572 
    Details
    ISSN: 1432-2161
    Keywords: Key words Tuberculous tenosynovitis ; Magnetic resonance imaging ; Wrist
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We report recent MRI findings in patients with tuberculous tenosynovitis of the wrist. Marked synovial thickening around the flexor tendons and fluid in the tendon sheath were clearly shown on MRI. Post-contrast study was useful in distinguishing the thick tenosynovium from the surrounding structures and fluid in the tendon sheath. The well-enhanced tenosynovium was also seen in the carpal tunnel in all cases. On the basis of these findings, we could easily distinguish tenosynovitis from other soft-tissue-mass lesions, such as tumors or infected ganglia. Tuberculous tenosynovitis is often not diagnosed early, and its differentiation from soft tissue tumors may be clinically difficult. MRI, particularly post-contrast study, is useful for early diagnosis of, and planning treatment for, tuberculous tenosynovitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560050137
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Bone mineral and other bone components in vertebrae evaluated by QCT and MRI (1993)
    Springer
    Skeletal radiology 22 (1993), S. 109-113 
    Details
    ISSN: 1432-2161
    Keywords: Bone mineral density ; Quantitative computed tomography ; Magnetic resonance ; Marrow fat ; Collagen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate the usefulness of assessing bone components using magnetic resonance imaging (MRI), the contributions of bone components, including mineral, fat and collagen, to bone mineral density (BMD) and T1 relaxation time (T1) were studied using phantoms. Excised human vertebrae were also evaluated by quantitative computed tomography (QCT) and MRI. T1 was shortened with increasing quantities of fat and collagen. In water, T1 was significantly affected by bone density, while in oil, T1 became slightly longer as bone density increased. The presence of fat and collagen caused under- and overestimations of BMD, respectively. There was good correlation between T1 and BMD in osteoporotic vertebrae and the vertebrae with long T1 showed an increased content of hematopoietic marrow and/or abnormally increased bone mineral. It was concluded that the experimental data showed that MRI can contribute to the assessment of bone quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00197987
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of nonweight bearing on tibial bone density measured by QCT in patients with hip surgery (1999)
    Springer
    Journal of bone and mineral metabolism 17 (1999), S. 45-50 
    Details
    ISSN: 1435-5604
    Keywords: Key words: disuse osteoporosis ; nonweightbearing ; peripheral quantitative computed tomography (pQCT) ; bone mineral density (BMD)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: Tibial bone mineral density (BMD) was measured in 11 patients who had undergone hip joint surgery, including 10 women (22–61 years old; mean ± SD = 42.6 ± 10.3) and 1 man (61 years old). Four patients received total hip replacement (THR), while the others underwent rotational acetabular osteotomy (RAO). In one case, the start of rehabilitation was delayed until 4 months after the surgery because of infection at the surgical site. Nine patients underwent hip surgery for osteoarthritis and 2 patients for avascular necrosis. These 2 patients had a history of medication with corticosteroid. BMD of the tibia on the surgically treated side was measured by a peripheral quantitative CT (pQCT) system, which provided three different BMD values of trabecular BMD in the distal portion, total BMD in the distal portion, and total BMD in the diaphysis. The measurements were obtained preoperatively, and at several time points postoperatively, at 2, 4, 6, and 8 weeks and 3, 4, 5, 8, 12, 18, and 24 months after surgery. Brief periods of nonweightbearing lead to significant bone loss, and 1–1.5 years was required to recover to the baseline BMD. Accelerated bone loss was seen in patients in the perimenopausal state, with prolonged bed rest, and in patients receiving corticosteroid. Both trabecular and cortical components were influenced by nonweightbearing and restoration of weightbearing. The decrease in the cortical region occurs after the decrease in the trabecular and endosteal regions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007740050062
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Coronary artery-cardiac chamber shunt: cineangiographic analysis (1992)
    Springer
    The international journal of cardiovascular imaging 8 (1992), S. 63-70 
    Details
    ISSN: 1573-0743
    Keywords: coronary artery-cardiac chamber shunt (CA-CC shunt) ; coronary angiography ; coronary arteries ; hypertrophic cardiomyopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Coronary artery-cardiac chamber shunts (CA-CC shunts) were observed in 101 out of 2267 consecutive patients (4.5%) receiving selective coronary angiography. In these patients, contrast medium injected into the coronary artery escaped directly into the cardiac chamber. CA-CC shunts were angiographically classified into the following two types. Type I: The endocardial layer was diffusely opacified, and contrast medium escaped into the cardiac chamber on systole (n=83). Type II: Contrast medium escaped directly into the cardiac chamber via an undilated branch (n=11). Type I and type II shunts were observed simultaneously in 7 patients. It is speculated that type I is a shunt via a persistent arterio-sinusoidal vessel, while type II is a shunt via a persistent arterio-luminal vessel. Both types were observed frequently (24.9%) in hypertrophic cardiomyopathy. The degree of CA-CC shunts in hypertrophic cardiomyopathy was not influenced by the presence or absence of myocardial squeezing. CA-CC shunts are considered to be due to an abnormality in the coronary microcirculation of the myocardium. We describe the angiographic features of the two types of CA-CC shunt and discuss their pathophysiological significance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01137568
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    Paper (German National Licenses)
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