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- Gillberg, Christopher, 1950, et al.
(författare)
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Childhood psychosis and computed tomographic brain scan findings.
- 1983
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Ingår i: Journal of Autism and Developmental Disorders. - 0162-3257. ; 13:1, s. 19-32
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Tidskriftsartikel (refereegranskat)abstract
- Twenty-seven infantile autistic children, nine children with other kinds of childhood psychoses, 23 children with mental retardation, and 16 normal children were examined with computerized tomography of the brain. Gross abnormalities were seen in 26% of the autism cases. It was also estimated that about the same proportion of a total population of infantile autistic children show gross changes of CT brain scan. Abnormalities in the region of the frontal horns of the ventricular system tended to be more common in the psychosis groups than in the normal group. Clear-cut right occipital protuberation was rather common in the small group of other psychoses cases but was only marginally more common in the autism than in the normal group. Evans' ratio was significantly higher in all three abnormal groups than in the normal group.
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| 3. |
- Norén, Jörgen G, 1947, et al.
(författare)
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Analysis of lead and cadmium in deciduous teeth by means of potentiometric stripping analysis.
- 1987
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Ingår i: Swedish dental journal. - 0347-9994. ; 11:1-2, s. 45-52
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Tidskriftsartikel (refereegranskat)abstract
- The content of lead was analysed in 101 deciduous teeth by means of potentiometric stripping analysis (PSA). In order to check possible matrix effects a limited amount of samples were analysed with atomic absorption spectrometry (AAS) as well. After weighing, the teeth were dissolved in 1M hydrochloric acid and the metal determinations were performed. The mean lead concentration was 2039 ppb w/w tooth substance. A sufficient correlation between PSA and AAS was found. A significantly higher level of lead was found in teeth from children brought up in areas of heavy traffic compared to children living in more rural areas. In conclusion the PSA technique is a reliable, sensitive and fast method for determining heavy metals in dental hard tissues. As a biproduct the corresponding figures for cadmium were achieved with a mean value of 369 ppb, however with a lower degree of confidence.
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