Patient population
Between 28 January 2019 and 16 October 2020, patients referred for lower limb CTA at University Hospital were considered for enrolment in this single-centre, parallel, randomized controlled trial (RCT). The inclusion criteria were: estimated glomerular filtration rate (eGFR) > 30 mL/min/1.73 mThe study was approved by the Regional Committee for Medical and Health Research Ethics of South East Norway (ref 2018/473) and the Data Protection Officer of the hospital. All participants gave written informed consent. The study was retrospectively registered on 5 August 2022 at ClinicalTrials.gov (NCT05488899).