caa a22 4500 397504705 CHVBK 20180308164541.0 cr unu---uuuuu 161202e19950101xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082582 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082582 Intestinal Biopsy in Children with Coeliac Disease; A Swedish National Study of Radiation Dose and Risk [Elektronische Daten] [J. Persliden, H.B.L. Pettersson, H. Fälth-Magnusson] In paediatric patients, fluoroscopy is used to monitor intestinal biopsies obtained for the diagnosis of coeliac disease. The radiation dose to the child is dependent on the equipment, the sedation of the patient and the experience of the operator. This study presents patient measurements from a national study in Sweden. The cancer excess lifetime mortality risk (CELMR) and the loss of life expectancy (LLE) are calculated for this patient group. TLD measurements were performed by dosemeters at 40 Swedish paediatric departments performing these biopsies. Information was received on sedation techniques, equipment used and fluoroscopy duration. An exponential curve fit was applied to the entrance and exit dose values and this dose distribution was integrated to get the integral dose. From this the mean absorbed dose in the irradiated volume was calculated. The mean and the median of the mean absorbed dose in the irradiated volume to the children was found to be 1.3 mGy (range 0.05-17.5 mGy) and 0.56 mGy respectively. The mean value of the entrance surface dose was 3.0 mGy (range 0.10-27.1 mGy) and the median was 1.4 mGy. The annual collective dose was calculated to 3.3 man Gy, based on 2500 biopsies per year. Variation in doses was found to depend on, e.g. the age of the equipment, focus to patient distance, sedation and operator exerience. With this knowledge of doses received by the children in the diagnosis of coeliac disease, CELMR was found to be 0.5 per 2500 biopsied and LLE was 18 years. Recommendations are given on the proper choice of equipment for the reduction of fluoroscopy doses in paediatric radiology. Radiation Protection Dosimetry Persliden J. aut Pettersson H.B.L. aut Fälth-Magnusson H. aut Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 459-462 0144-8420 57:1-4<459 1995 57 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082582 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082582 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Persliden J. aut NATIONALLICENCE 700 1- Pettersson H.B.L. aut NATIONALLICENCE 700 1- Fälth-Magnusson H. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 459-462 0144-8420 57:1-4<459 1995 57 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford