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  • 1
    Electronic Resource
    Electronic Resource
    Changes in the basal ganglia and thalamus following reperfusion after complete cerebral ischaemia (1994)
    Springer
    Neuroradiology 36 (1994), S. 605-607 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Basal ganglia ; Thalamus ; Complete cerebral ischaemia ; Cardiac arrest
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report specific changes bilaterally in the basal ganglia and thalamus following reperfusion after complete cerebral ischaemia. A 69-year-old man, resuscitated after cardiac arrest, showed symmetrical lowdensity lesions in the head of the caudate nucleus and lentiform nucleus on CT. MRI revealed methaemoglobin derived from minor haemorrhage in the basal ganglia and thalamus, not evident on CT. We suggest that this haemorrhage results from diapedesis of red blood cells through the damaged capillary endothelium following reperfusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600418
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  • 2
    Electronic Resource
    Electronic Resource
    Bilateral organized chronic subdural haematomas: High field magnetic resonance images and histological considerations (1994)
    Springer
    Acta neurochirurgica 131 (1994), S. 265-269 
    Details
    ISSN: 0942-0940
    Keywords: Organized chronic subdural haematoma ; high field MRI ; histology ; growth mechanism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors describe a 66-year-old man with progressive gait disturbance caused by bilateral organized chronic subdural haematomas. The characteristics of these lesions on magnetic resonance (MR) images have not yet been clarified. The organized haematoma in our patient exhibited slight hypo-intensity on T 1-weighted MR images and marked hypo-intensity on T 2-weighted MR images obtained at 1.5 T. Preoperative MR imaging may give us useful information about surgical strategy in the case of chronic subdural haematoma with an unusual appearance on computed tomographic (CT) scans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01808625
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  • 3
    Electronic Resource
    Electronic Resource
    The influence of different insufflation pressures during carbon dioxide pneumoperitoneum on the development of pulmonary metastasis in a mouse model (2000)
    Springer
    Surgical endoscopy and other interventional techniques 14 (2000), S. 578 -581 
    Details
    ISSN: 1432-2218
    Keywords: Key words: Colon 26 — Colorectal cancer — Laparoscopic surgery — Pneumoperitoneum — Pulmonary metastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The effects of different insufflation pressures on the development of pulmonary metastasis was investigated in a mouse laparoscopy model. Methods: BALB/C mice intravenously inoculated with colon 26 cells were randomized to one of five treatment groups (10 mice per group): pneumoperitoneum at different pressures of 5, 10 or 15 mmHg; full laparotomy for 60 min; or anesthesia control. Cancer nodules on the lung surface 19 days postoperatively were compared between groups. Results: (a) As compared with the control group, pneumoperitoneum at 10 and 15 mmHg and laparotomy enhanced the growth of pulmonary metastases (p 〈 0.01). (b) The growth of metastases also was greater in laparotomy group mice than in mice undergoing pneumoperitoneum at 5 and 10 mmHg (p 〈 0.05). Conclusions: These results suggest that the effects of different insufflation pressures on the growth of pulmonary metastases are not identical, and that pneumoperitoneum with high pressure may promote pulmonary metastases similar to those with laparotomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004640000098
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  • 4
    Electronic Resource
    Electronic Resource
    Cystic meconium peritonitis: ultrasonographic features (1984)
    Springer
    Pediatric radiology 14 (1984), S. 18-22 
    Details
    ISSN: 1432-1998
    Keywords: Meconium ; Peritonitis ; Ultrasonics ; Intestinal perforation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Meconium peritonitis occasionally occurs as a localized, encysted collection of meconium ranging from a few centimeters in size to huge cysts occupying most of the abdominal cavity. The cyst wall consists of fibrous granulation tissue and the cyst may contain only meconium or may also encase loops of bowel. Gas within the cyst indicates persistent communication between the perforated bowel and the cyst cavity; if the perforation seals over in utero the cyst remains gasless. Calcification is a variable finding. Sonography in two neonates with cystic meconium peritonitis showed well-defined, echogenic masses, one of which contained calcifications and was detected in utero.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02386725
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of trocar placement and CO2 pneumoperitoneum on port site metastasis following laparoscopic tumor surgery (2000)
    Springer
    Surgical endoscopy and other interventional techniques 14 (2000), S. 193-197 
    Details
    ISSN: 1432-2218
    Keywords: Key words: Port site metastasis — Abdominal wound metastasis — Laparoscopic surgery — Pneumoperitoneum — VX2 cancer — Tumor surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The mechanisms involved in the development of port site metastasis following laparoscopic tumor surgery remain controversial. Therefore, we decided to investigate the influence of trocar placement and CO2 pneumoperitoneum on abdominal wound implantation in relation to intraperitoneal tumor growth in a rabbit model. Methods: Rabbits received either CO2 pneumoperitoneum with insertion of nine trocars (pneumoperitoneum group, n= 15), insertion of nine trocars alone (nonpneumoperitoneum group, n= 15), or nine abdominal incisions (control group, n= 13) 3 days after intraperitoneal inoculation of VX2 cancer cells. Results: The frequency of overall wound implantation on day 17 in the pneumoperitoneum group (24.4%) and nonpneumoperitoneum group (27.4%) tended to be higher than that in the control group (15.3%) (p= 0.06). There was no significant difference among the three groups in the growth of cancer nodules on the omentum. Conclusions: The presence of a trocar may be a factor contributing to port site metastasis but CO2 pneumoperitoneum appears not to be a factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004649900099
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  • 6
    Electronic Resource
    Electronic Resource
    Pneumoperitoneum with carbon dioxide enhances liver metastases of cancer cells implanted into the portal vein in rabbits (2000)
    Springer
    Surgical endoscopy and other interventional techniques 14 (2000), S. 239-242 
    Details
    ISSN: 1432-2218
    Keywords: Key words: Laparoscopic surgery — CO2 pneumoperitoneum — Liver metastasis — Gastrointestinal cancer — VX2 cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Little is known about the role of the CO2 pneumoperitoneum on tumor cells that spread from the portal system into the liver during laparoscopic surgery for gastrointestinal malignancies. Therefore, we designed a study to investigate the effect of CO2 pneumoperitoneum on cancer cells implanted in the portal vein in a rabbit model. Methods: Immediately after intraportal inoculation of 2.5 × 105 cells of VX2 cancer, the rabbits received either CO2 pneumoperitoneum at a pressure of 10 mmHg for 30 min (pneumoperitoneum group, n= 14) or laparotomy alone for 30 min (laparotomy group, n= 14). Results: The number (p 〈 0.01) and area of cancer nodules (p= 0.045) on the liver surface on day 17 were greater in the pneumoperitoneum group than in the laparotomy group. The frequency of cancer nodules 〉3.0 mm in diameter was higher in the pneumoperitoneum group than in the laparotomy group (p 〈 0.001). Conclusions: Compared with laparotomy, CO2 pneumoperitoneum enhanced the development of liver metastases in this experimental model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004640000047
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  • 7
    Electronic Resource
    Electronic Resource
    Isomeric yield ratios of fission products in the system of 24 MeV proton-induced fission of238U (1993)
    Springer
    The European physical journal 347 (1993), S. 53-62 
    Details
    ISSN: 1434-601X
    Keywords: 25.85.Ge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Isomeric yield ratios of 30 fission products in 24 MeV proton-induced fission of238U were measured by the use of the ion-guide isotope separator on-line. The obtained isomeric yield ratios were converted to the angular momenta of primary fission fragments based on the statistical model. The deduced angular momenta were examined from various aspects. It is found that in general the angular momentum continuously increases with the fragment mass number including the region of symmetric mass division. However, there are some exceptions. For Sn isotopes the deduced angular momenta are quite small due to the spherical shape of the nuclear shell configuration. It is also concluded from the consideration of the charge distribution that the angular momentum of fission product scatters considerably within the narrow range of mass division. The dependence of the angular momentum on the available energy of fragments at scission point indicates that the individual fragment possesses a characteristic deformation at scission and/or the deduced angular momentum is seriously affected by the particle excitation after scission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01301277
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  • 8
    Electronic Resource
    Electronic Resource
    Nuclearg-factors of the 1229 and 2911 keV isomers in143Nd (1994)
    Springer
    The European physical journal 348 (1994), S. 173-176 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 23.20.−g ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nuclearg-factors of the 1229 keV 13+/2 and 2911 keV 21+/2 level and the half-life of the 1229 keV level have been measured to beg(1229)=0.058(5),g(2911)=0.69(12) andT 1/2 (1229)=6.79(2) ns. The experimental g-factors show that the 1229 keV level has a dominant configuration of (ρf 7/2⊗3−), and the 2911 keV level has an almost pure (ρf 7/2⊗7−), configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291914
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  • 9
    Electronic Resource
    Electronic Resource
    Pseudoweb of the gastric antrum in infants (1980)
    Springer
    Pediatric radiology 9 (1980), S. 73-75 
    Details
    ISSN: 1432-1998
    Keywords: Antral web ; Gastric outlet obstruction ; Flexible fiberoptic gastroscopy ; Incomplete pyloric diaphragm ; Incomplete antral membrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two infant boys, one 3 months of age and the other 8 weeks of age, with symptoms suggesting gastric outlet obstruction had upper gastrointestinal fluororadiographic examinations which showed typical signs for gastric antral webs (diaphragms or membranes), but neither had actual webs as proven by surgery in one and by endoscopy in the other. The report emphasizes the possibility of falsely positive radiographic findings, which can be tested by potentially corroborative fiberoptic endoscopy, thus avoiding unnecessary surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00977668
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  • 10
    Electronic Resource
    Electronic Resource
    Acylcarnitine profile in tissues and body fluids of biotin-deficient rats with and withoutl-carnitine supplementation (1994)
    Springer
    Journal of inherited metabolic disease 17 (1994), S. 678-690 
    Details
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since biotin-deficient (BD) rats are a good animal model for human multiple carboxylase deficiency and have low plasma free carnitine levels, short-chain acylcarnitine profiles in biotin-deficient rats withl-carnitine supplementation (BDC rats) and BD rats were investigated by fast-atom bombardment and tandem mass spectrometry and gas chromatography/mass spectrometry. By the latter method, 3-hydroxyisovalerylcarnitine was identified in BD rats, and showed the greatest accumulation among short-chain acylcarnitines in tissues of BD rats, while the tissue levels of propionic acid were more markedly elevated than those of 3-hydroxyisovaleric acid. The tissue levels of 3-hydroxyisovaleryl-carnitine were significantly lower and those of propionyl-carnitine were somewhat higher in BDC rats than in BD rats, while the tissue levels of propionic acid and 3-hydroxyisovaleric acid in BDC rats were lower than those in BD rats. These changes were more apparent in kidney than in other tissues. The amounts of urinary excretion of acylcarnitines were markedly larger, and those of 3-hydroxyisovaleric acid were somewhat smaller in BDC rats than in BD rats, while those of propionic acid were very low in BD and BDC rats as compared with those of 3-hydroxyisovaleric acid. It seems that the relationship between the concentrations of 3-hydroxyisovalerylcarnitine and those of propionylcarnitine reflects the unique metabolism of the related metabolites in tissues, especially in kidney, which may be influenced by their urinary excretion and the availability of free carnitine. These data in biotin deficiency suggest that carnitine supplementation is possibly beneficial for patients with holocarboxylase synthetase deficiency who respond incompletely to biotin therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00712010
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