Abstract：
OBJECTIVE:To present results of optimising scoliosis examination by changing from a conventional film/grid (F/G) to air-gap technique using computed radiography (CR), and to evaluate different methods for estimating effective radiation doses. MATERIALS AND METHODS:Forty-nine children and adolescents were examined with an F/G technique, and 21 with air-gap and CR techniques. Entrance surface doses (ESD) were determined with lithium fluoride thermoluminescence dosimeters. For all patients, the effective radiation doses were determined using a hermaphrodite PCXMC computer program. For all F/G radiographs, the effective doses were also determined according to the NRPB-R279 report, and for 22 children (>9 years and/or >40 kg) also with the ODS-60 program, which allows separate gender calculations. Accumulated doses for 37 children examined more than once with F/G examinations were assessed. RESULTS:For F/G techniques, the ESDs for both frontal and lateral views varied with age and were significantly correlated to the patients' thickness. The calculated effective doses using the PCXMC program and the NRPB-R279 did not differ significantly for all frontal and lateral radiographs, respectively, but ODS-60 gave significantly higher values in female subjects. With air-gap and CR techniques, the mean effective doses were reduced by a factor over 10. The mean accumulated effective dose for 37 children with a mean of seven F/G examinations was 6.1 mSv, implying a risk of death of about 1:2,000 for boys and at least 1:1,000 for girls. CONCLUSIONS:Paediatric scoliosis radiography should be considered a specialised procedure, which has to be optimised using a non-grid technique.
journal_name
Pediatr Radioljournal_title
Pediatric radiologyauthors
Hansen J,Jurik AG,Fiirgaard B,Egund Ndoi
10.1007/s00247-003-1015-5keywords:
subject
Has Abstractpub_date
2003-11-01 00:00:00pages
752-65issue
11eissn
0301-0449issn
1432-1998journal_volume
33pub_type
杂志文章abstract：:The case of a young boy with primary hyperparathyroidism due to an adenoma is reported. The tumor was localized by ultrasonography, and a close correlation between the image and the surgical findings was found. Since primary hyperparathyroidism in children under 15 years of age is frequently due to adenomata larger th...
journal_title：Pediatric radiology
pub_type： 杂志文章
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abstract：:Pulmonary capillary haemangiomatosis (PCH) is a rare disorder characterized by widespread capillary proliferation in the lung, infiltrating the interstitium and the alveolar walls. We present the HRCT features of PCH in a surviving ex-premature infant. To our knowledge, this is a unique case of the radiological featur...
journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
pub_type： 杂志文章,评审
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journal_title：Pediatric radiology
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更新日期：2012-02-01 00:00:00
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更新日期：2001-07-01 00:00:00
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journal_title：Pediatric radiology
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更新日期：1987-01-01 00:00:00
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更新日期：2018-07-01 00:00:00
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journal_title：Pediatric radiology
pub_type： 杂志文章,评审
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更新日期：2005-11-01 00:00:00
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journal_title：Pediatric radiology
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更新日期：1997-04-01 00:00:00
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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