Received: 4 May 2020
Accepted: 9 June 2020
First Online: 23 June 2020
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the Faculty of Medicine Ain Shams University together with departmental approval from the ethics committee of the Radiology Department of Ain Shams University. The ethics committee reference number is not applicable in this study as the protocol of this study was prepared by 2016 and we started patient enrollment and data collection by 2017–2018 which at such time the ethics committee reference number system was not established in our institute. Also, we did not make any changes in the protocol or methodology throughout the period of the study from the time of ethics committee approval and this technique is a well-established technique worldwide. All procedures performed in the study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: All authors of this manuscript give a consent to the <i>EJRNM</i> to publish this article.