Article History
Received: 31 August 2020
Accepted: 7 January 2021
First Online: 19 January 2021
Compliance with ethical standards
:
: Authors declare no conflict of interest.
: Prior to measurements collection, written informed consent was obtained from maintenance engineer who services 3.0 T scanner (Philips) and two chief radiographers from hospitals A and B. Ethical clearance was obtained from ethics committee of the Faculty of Health Sciences, University of the Free State (Reference Number: UFSHSD2018/0438).