Quantitative MRCP as Part of Primary Sclerosing Cholangitis Standard of Care in the National Health Service in England: A Feasibility Assessment Among Hepatologists.

Background: Primary sclerosing cholangitis (PSC) is a rare chronic liver disease characterised by bile duct strictures. Magnetic resonance cholangiopancreatography (MRCP) is the principal imaging modality for diagnosis; however, its interpretation is subjective. Quantitative MRCP (MRCP+) provides quantitative assessment of the biliary anatomy and can support objective disease assessment. We evaluated the potential impact, feasibility, and perceived usefulness that MRCP+ would have on PSC patient management. Methods: Alongside systematic evaluation of UK and European clinical guidelines on PSC management, semi-structured interviews with 16 stakeholders were conducted. The Lean Assessment Process methodology was used to assess potential impact and feasibility of adopting MRCP+ for the PSC care pathway within the NHS. Price as a barrier to adoption was investigated to evaluate perceptions between technology cost and adoption. Perceived ease of use and perceived trust were calculated and used to evaluate perceived usefulness (PU). Results: For PSC management, MRCP (81%) scored higher than liver biopsy (68%) and ERCP (50%) due to its non-invasive nature. There was good internal consistency between responders on the relationship between price point and the use of MRCP+ to support diagnosis (CA:0.836) and monitoring (CA:0.904). A price point of up to GBP 500 was unlikely to be a barrier for adoption. The overall perceived usefulness for MRCP+ for patient management was 74%. Conclusions: There is strong interest in using MRCP+ to support PSC management. MRCP+ has the potential to address unmet needs including reducing subjectivity, measurement of the whole biliary tree and objectively measuring biliary disease progression.