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  • 2005-2009  (4)
  • 1985-1989  (4)
  • 1965-1969  (2)
  • 1
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary.  Effective treatment of haemophilic arthropathy requires a detailed evaluation of joint integrity. Methodological assessment of magnetic resonance imaging (MRI) scores are needed to assure reproducibility of measurements when comparing results of clinical trials conducted in different centres. We compared the reliability of two MRI scoring systems for assessment of haemophilic arthropathy: one progressive system that displays the most severe change and one additive system that depicts osteochondral and soft tissue-related changes. A total of 47 1.5 T MRI examinations of knees (n = 21) and ankles (n = 26) of 42 haemophilic boys, age range, 22 months to 18 years, performed at different centres (Toronto, n = 20, Europe, n = 12 and Denver, n = 15) were independently reviewed by four radiologists at two occasions. Twenty-two examinations were from children 〈9 years and 25 from children ≥9. Sagittal and coronal gradient-echo (MPGR, 3D FLASH with fat saturation, GRASS) images were obtained. The MRI examinations of the ankle and knee studies presented with osteochondral abnormalities in 38.5% and 23.8% of the cases respectively. The two scoring systems demonstrated an excellent inter-reader [progressive, 0.88; additive (A, e, s and h components), 0.86] and intra-reader [progressive, 0.92; additive (A, e, s and h components), 0.93] reliability using intraclass correlation coefficients (ICCs). Although ICCs were slightly higher for knees when compared with ankles, and for older children when compared with younger children, all values fell within excellent inter- and intra-reader reliability categories. The two MRI scoring systems demonstrated a comparable reliability. This result constitutes the basis for further development of a combined MRI scoring system for assessment of haemophilic arthropathy, which incorporates progressive and additive components.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary.  The international MRI expert subgroup of the International Prophylaxis Study Group (IPSG) has developed a consensus for magnetic resonance imaging (MRI) scales for assessment of haemophilic arthropathy. A MRI scoring scheme including a 10 step progressive scale and a 20 step additive scale with identical definitions of mutual steps is presented. Using the progressive scale, effusion/haemarthrosis can correspond to progressive scores of 1, 2, or 3, and synovial hypertrophy and/or haemosiderin deposition to 4, 5, or 6. The progressive score can be 7 or 8 if there are subchondral cysts and/or surface erosions, and it is 9 or 10 if there is loss of cartilage. Using the additive scale, synovial hypertrophy contributes 1–3 points to the additive score and haemosiderin deposition contributes 1 point. For osteochondral changes, 16 statements are evaluated as to whether they are true or false, and each true statement contributes 1 point to the additive score. The use of these two compatible scales for progressive and additive MRI assessments can facilitate international comparison of data and enhance the accumulation of experience on MRI scoring of haemophilic arthropathy.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Haemophilia 11 (2005), S. 0 
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary.  Fifty-six ankle joints in 38 haemophilic boys were investigated by magnetic resonance imaging (MRI) and the findings were classified according to both the Denver- and the European scoring schemes. The different MRI scores were compared with each other and with clinical data on number of joint bleeds and the orthopaedic joint score. MRI changes that were more advanced than a small effusion were found in 33 (59%) of the ankles and osteochondral changes were observed in 20 (36%). The total number of bleeds in individual ankles ranged from 0 to 80 (mean: 11). The orthopaedic joint score was 0 for 49 ankles and ranged from one to four for seven ankles. There was a significant and strong correlation between the assessment results obtained with the two MRI scoring methods (correlation coefficients ranged from 0.80 to 0.95, P 〈 0.001), and both types of MRI scores were weakly but significantly correlated with the clinical data on the number of joint bleeds and the orthopaedic joint score (correlation coefficients: 0.32–0.39, P 〈 0.01 or P 〈 0.05). MRI is useful for evaluating early joint changes in patients with haemophilia. The European scoring method differentiates the arthropathic changes further than the Denver scale does, but the two different scoring methods have similar correlation to the number of joint bleeds and the orthopaedic joint score.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 192 (1966), S. 439-448 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An electron-electron coincidence method for precise measurements of internal conversion probabilities is described. By usingK-Auger electrons the atom itself provides a unity standard in the same nuclear decay. The method is applied to the decay of111In in which theK-conversion probability of the 245 keV transition is determined to be 0.0494±0.0011. Relative internal conversion intensities and transition energies are determined using a double focussing spectrometer. These data make it possible to calculate conversion coefficients for all electron shells.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 210 (1968), S. 466-489 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The internal conversion spectrum following the decay of193Au has been studied in the electron energy region 0.8 to 700 keV, with the use of high-resolution magnetic beta-ray spectrometers. Several not previously reported transitions have been estabblished. Multipolarities and mixing ratios have been deduced fromK/L and subshell intensity ratios, and the majority of the transitions were found to be ofM1 and/orE2 characters. A revised level scheme for193Pt, which consistently accomodates most transitions, has been constructed. Tentative spin-parity values have been assigned to all levels.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Four hundred and thirty femoral trochanteric fractures operated with nail-plate (McLaughlin), Ender, or sliding screw-plate (Richard) osteosynthesis were followed up radiographically and clinically. For each method of osteosynthesis the initial nail position was correlated to the occurrence of late mechanical complications. Unstable fractures were associated with a higher incidence of one or more clinical complications such as repeated surgery, post-operative death, or increased pain. For Ender osteosynthesis correlations were found between several mechanical and clinical complications, while for Richard's osteosynthesis mechanical complications were significantly correlated to repeated surgery only. McLaughlin and Ender osteosyntheses had a higher incidence of reoperations than Richard's osteosynthesis, whereas the mobility and ADL function were the same at 4 months.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2161
    Keywords: Magnetic resonance imaging ; Musculoskeletal neoplasms ; Computed tomography of musculoskeletal neoplasms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 31 patients with 21 soft tissue and 10 bone tumors, magnetic resonance imaging (MRI) and computed tomography (CT) were equally effective in delineating the margins of most soft tissue tumors, and the margins of bone tumors from fat and adjacent normal bone. However, MRI was superior to CT in delineating bone tumors from adjacent muscle, and in showing the relationships to bone of the deep margins of some soft tissue tumors. This was true because the quality of CT images around thick cortical bone often was severely degraded by streak artifact, which does not occur in MRI. Excellent anatomic detail was achieved on MRI by spin echo pulse sequences with short repetition times. Bone tumors were delineated best by spin echo 1000/30 images, and soft tissue tumors by spin echo 1000/30 or inversion recovery images.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-5195
    Keywords: Tumours ; Soft-tissue ; Preoperative diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé En l'espace de trois ans, en Suède méridonale, on a rassemblé 35 malades porteurs de sarcomes profonds des membres, sans métastases. Trente d'entre eux ont été adressées avant toute intervention. Pendant la même période 37 patients présentant des tumeurs bénignes profondément situées ont été adressés pour suspicion de malignité. Dans 59 de ces 67 cas, un diagnostic pré-opératoire, suffisant pour déterminer le type d'intervention à réaliser, a été obtenu grâce à l'examen clinique, à l'examen radiologique et à la cytologie par ponction biopsie, mais sans biopsie opératoire. La distinction entre tumeur bénigne et maligne s'est révélée exacte dans tous les cas sauf un. L'étendue de l'excision nécessaire pour délimiter correctement un sarcome des parties molles peut souvent être réduite si la biopsie pré-opératoire a été évitée, permettant la conservation de la fonction. Les auteurs concluent que le traitement des malades porteurs de sarcomes des parties molles est possible dans la grande majorité des cas sans qu'il faille recourir à la biopsie chirurgicale.
    Notes: Summary Over a period of 3 years in Southern Sweden 35 patients were seen with deep-seated limb sarcomas without metastases, 30 of whom were referred before any operation had been carried out. Thirty seven patients with deep-seated benign lesions were referred during the same period because of suspected malignancy. A preoperative diagnosis considered sufficient for a definitive operation was made from the clinical findings, aspiration cytology and radiographic examination, but without open biopsy, in 59 of these 67 cases. The differentiation between a benign and a malignant tumour was correct in all but one. The extent of excision necessary to achieve adequate margins for a soft-tissue sarcoma can often be reduced if open biopsy is avoided, with preservation of function. We conclude that treatment without open biopsy is possible in the great majority of patients with soft-tissue sarcoma.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 115 (1987), S. 211-216 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Gamma-ray measurements have been performed on biofuel samples using a planar intrinsic Ge detector. The samples were first homogenized and then packed into 90 ml plastic tubs. The radiation from each sample was usually measured for 1 to 2 days. The intensity of the 63.3 keV γ-ray in234Th was used to determine the amount of238U present. The amount of235U can be determined from the intensity of the 143.8 keV γ-ray.
    Type of Medium: Electronic Resource
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