0° vs. 180° CT localiser: The effect of vertical off-centring, phantom positioning and tube voltage on dose optimisation in multidetector computed tomography.

Yazan Al-Hayek Xiaoming Zheng Rob Davidson Christopher M Hayre Dana S Al-MousaCampbell FinlayKelly Maree Spuur

Published in: Journal of medical radiation sciences (2021)

Phantom off-centring and localiser direction evidenced large dose variation. It is recommended that the 0° localiser is employed during CT examinations, in order to minimise the potential additional radiation dose which may result from off-centring and the use of lower tube voltages where clinically appropriate.

Keyphrases

computed tomography
dual energy
image quality
positron emission tomography
magnetic resonance imaging
contrast enhanced
human health
risk assessment
climate change