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  • Intestinal biopsy  (1)
  • Magnetic resonance imaging  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Small intestine biopsy of children with coeliac disease: Influence of X-ray equipment on radiation dosage (1994)
    Springer
    European radiology 4 (1994), S. 458-461 
    Details
    ISSN: 1432-1084
    Keywords: Radiation dose ; Paediatric radiology ; X-ray equipment ; Intestinal biopsy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In paediatric radiology intestinal biopsies for the diagnosis of coeliac disease are performed using fluoroscopy. The radiation exposure to the child depends on the X-ray equipment. We report patient measurements from three different equipments (A, B and C) together with a phantom study simulating children of different thickness relative to age. The median values of the mean absorbed dose to the child in the irradiated volume were 1.2 mGy (A), 0.79 mGy (B) and 0.15 mGy (C). The results show that the increase in tube potential with increasing distance in one equipment decreases the dosage, and also that modern equipment should be employed. Particularly old image intensifiers should not be used. With an optimal choice of equipment the dosage to the child can be reduced fourfold. The combination of an optimal technique of sedation and an experienced operator can reduce the dosage tenfold.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212821
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of bone and soft tissue tumors: Early experience in 31 patients compared with computed tomography (1985)
    Springer
    Skeletal radiology 13 (1985), S. 134-146 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF00352084
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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