X-ray examination dose surveys: how accurate are my results?
Objectives: To determine the variabilities of dose-area-products (DAP) of frequent X-ray examinations collected for comparison with diagnostic reference levels (DRLs).Methods: DAP values of chest, abdomen, and lumbar spine examinations obtained on devices from two manufacturers were collected in thr...
| Publicado en: | European Radiology Vol. 29; no. 10; pp. 5307 - 5314 |
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| Autores principales: | , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Oct2019
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=138395921&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 138395921 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Oct2019 vid: 29 iid: 10 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 138395921 138395921 143976430 NLM30877467 138395921 10.1007/s00330-019-06055-5 NLM30877467 138395921 ppf: 5307 ppct: 7 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: X-ray examination dose surveys: how accurate are my results? aug: au: Taylor, Stephen Van Muylem, Alain Howarth, Nigel Gevenois, Pierre Alain Tack, Denis affil: Department of Radiology, Hôpital Ambroise Paré, Boulevard Président Kennedy 2, 7000, Mons, Belgium sug: subj: Lumbar Vertebrae Radiation Effects Thorax Radiation Effects Abdomen Radiation Effects X-Rays Radiography Statistics and Numerical Data Reproducibility of Results Algorithms Sample Size Radiation Dosage Radiologic Health Physical Examination Methods Human Body Weight Validation Studies Comparative Studies Evaluation Research Multicenter Studies ab: Objectives: To determine the variabilities of dose-area-products (DAP) of frequent X-ray examinations collected for comparison with diagnostic reference levels (DRLs).Methods: DAP values of chest, abdomen, and lumbar spine examinations obtained on devices from two manufacturers were collected in three centers over 1 to 2 years. The variability of the average DAP results defined as the 95% confidence interval in percentage of their median value was calculated for increasing sample sizes, each examination and center. We computed the sample sizes yielding variabilities lower or equal to 25% and 10%. The effect of narrowing patient selection based on body weight was also investigated (ranges of 67-73 Kg, or 60-80 Kg).Results: DAP variabilities ranged from 75 to 170% of the median value when collecting small samples (10 to 20 DAP). To reduce this variability, larger samples are needed, collected over up to 2 years, regardless of the examination and center. A variability ≤ 10% could only be reached for chest X-rays, requiring up to 800 data. For the abdomen and lumbar spine, the lowest achievable variability was 25%, regardless of the body weight selection, requiring up to 400 data.Conclusion: Variabilities in DAP collected through small samples of ten data as recommended by authorities are very high, but can be reduced down to 25% (abdomen and lumbar spine) or even 10% (chest) through a substantial increase in sample sizes. Our findings could assist radiologists and regulatory authorities in estimating the reliability of the data obtained when performing X-ray dose surveys.Key Points: • Low but reasonable variabilities cannot be reached with samples sized as recommended by regulatory authorities. Higher numbers of DAP values are required to reduce the variability. • Variabilities of 10% for the chest and 25% for abdomen and lumbar spine examinations are achievable, provided large samples of data are collected over 1 year. • Our results could help radiologists and authorities interpret X-rays dose surveys. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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