IMPACT OF COLLIMATION ON RADIATION EXPOSURE IN ADULT AND PAEDIATRIC DIGITAL X-RAY IMAGING

This study aimed to evaluate the collimation practices and quantify the overexposure due to extensive X-ray field area. The study was carried out in four digital X-ray units (including one paediatric X-ray unit). A total of 749 X-ray projections (555 adult and 194 paediatric) were evaluated. In adul...

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Bibliographic Details
Published inRadiation protection dosimetry Vol. 197; no. 1; p. 19
Main Authors Satharasinghe, Duminda, Jeyasugiththan, J, Jeyasuthan, M, Amalaraj, T, Abeyweera, A L, Wanninayake, W M N M B, Pallewatte, A S
Format Journal Article
LanguageEnglish
Published England 26.11.2021
Subjects
Adult
Child
Humans
Phantoms, Imaging
Radiation Dosage
Radiation Exposure
Radiographic Image Enhancement
X-Rays
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Summary:This study aimed to evaluate the collimation practices and quantify the overexposure due to extensive X-ray field area. The study was carried out in four digital X-ray units (including one paediatric X-ray unit). A total of 749 X-ray projections (555 adult and 194 paediatric) were evaluated. In adult X-ray units, the radiation field size was two times larger than the electronically collimated field. In the paediatric unit, the radiation field was 3.7 times larger than the electronic collimated field. The average additional entrance surface dose due to the excess radiation field used in a paediatric X-ray unit varied between 9.3 (2.5%) and 201.4 $\mu $Gy (10.9%). Therefore, proper pre-patient collimation should be applied whenever feasible, which reduces the patient radiation dose considerably.
ISSN:1742-3406
DOI:10.1093/rpd/ncab155