Original article H. Shiwani Corresponding Author E-mail address: hshiwani@gmail.com http://orcid.org/0000-0002-0046-2884 Department of Radiology, Leeds General Infirmary, Leeds, UK Leeds Vascular Institute, Leeds General Infirmary, Leeds, UK Correspondence to: Dr H. Shiwani, Department of Radiology, Leeds General Infirmary, Great George Street, Leeds LS1 3EX, UK (e‐mail: hshiwani@gmail.com)Search for more papers by this author Get access to the full version of this article.