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Radiation dose from medical imaging in end stage renal disease patients: a Nationwide Italian Survey

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Abstract

Background and objectives

End stage renal disease (ESRD) patients are exposed to the risk of ionizing radiation during repeated imaging studies. The variability in diagnostic imaging policies and the accompanying radiation doses across various renal units is still unknown. We studied this variability at the centre level and quantified the associated radiation doses at the patient level.

Methods

Fourteen Italian nephrology departments enrolled 739 patients on haemodialysis and 486 kidney transplant patients. The details of the radiological procedures performed over one year were recorded. The effective doses and organ doses of radiation were estimated for each patient using standardized methods to convert exposure parameters into effective and organ doses

Results

Computed tomography (CT) was the major contributor (> 77%) to ionizing radiation exposure. Among the haemodialysis and kidney transplant patients, 15% and 6% were in the high (≥ 20 mSv per year) radiation dose groups, respectively. In haemodialysis patients, the most exposed organs were the liver (16 mSv), the kidney (15 mSv) and the stomach (14 mSv), while the uterus (6.2 mSv), the lung (5.7 mSv) and the liver (5.5 mSv) were the most exposed in kidney transplant patients. The average cumulative effective dose (CED) of ionizing radiation among centres in this study was highly variable both in haemodialysis (from 6.4 to 18.8 mSv per patient-year; p = 0.018) and even more so in kidney transplant (from 0.6 to 13.7 mSv per patient-year; p = 0.002) patients.

Conclusions

Radiation exposure attributable to medical imaging is high in distinct subgroups of haemodialysis and transplant patients. Furthermore, there is high inter-centre variability in radiation exposure, suggesting that nephrology units have substantially different clinical policies for the application of diagnostic imaging studies.

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Acknowledgements

This work was presented in abstract form at the ERA-EDTA Congress–Wien 2016 and the ECMP Congress–Athens 2016.

MIRA-ESRD study Investigators and participating centres: Emilio Balestra (Ancona), Diego Bellino (Genova), Roberta Benevento (Bologna), Cristina Bregant (Trieste), Paola Bregant (Trieste), Barbara Cannillo (Novara), Giuseppe Casto (Pisa), Doriana Chiarinotti (Novara), Sara Cimolai (Mestre), Giacomo Colussi (Milano), Antonio De Agostini (Brescia), Fausto Declich (Lecco), Maria Grazia Facchini (Bologna), Maria Alessandra Galione (Lecco), Cesare Gavotti (Genova), Ugo Gerini (Trieste), Paola Isoardi (Torino), Cristina Izzo (Novara), Fabrizio Levrero (Genova), Eric Lorenzon (Trieste), Stefano Maffei (Torino), Stefania Maggi (Ancona), Alberto Mari (Ancona), Federico Mattana (Genova), Alberto Menegotto (Milano), Ophelia Meniconi (Pisa), Nicoletta Paruccini (Monza), Luisa Pierotti (Bologna), Federico Pieruzzi (Monza), Giuseppe Pontoriero (Lecco), Adele Postorino (Reggio Calabria), Marco Quaglia (Novara), Osvaldo Rampado (Torino), Andrea Ranghino (Torino), Sonia Reccanello (Mestre), Stefania Sabatino (Udine), Giulia Sangalli (Lecco), Chiara Sottocornola (Pisa), Marina Sutto (Milano), Salvatore Tata (Mestre), Alberto Torresin (Milano), Antonio Traino (Pisa), Annalisa Trianni (Udine), Letizia Zeni (Brescia).

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Correspondence to Maurizio Postorino.

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The Institutional Review Board approved the study of each participating centre.

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The members of the MIRA-ESRD Study Investigators are mentioned "Acknowledgements" section.

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Postorino, M., Lizio, D., De Mauri, A. et al. Radiation dose from medical imaging in end stage renal disease patients: a Nationwide Italian Survey. J Nephrol 34, 791–799 (2021). https://doi.org/10.1007/s40620-020-00911-0

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