106 The effective study: development and application of a question-driven, time-effective cardiac magnetic resonance scanning protocol

Abstract Aims Long scanning times impede cardiac magnetic resonance (CMR) clinical uptake. A ‘one-size-fits-all’ shortened, focused protocol [e.g. only function and late-gadolinium enhancement (LGE)] reduces time costs, but provide less information. We developed two question-driven CMR stress-CMR protocols, including tailored advanced tissue characterization, tested their effectiveness in reducing while retaining the diagnostic performances of standard protocols. Methods results Eighty-three consecutive patients with cardiomyopathy or ischaemic heart disease underwent CMR. Each scan consisted cines, LGE imaging, native T1-mapping, extracellular volume. Fat/oedema modules, right ventricle cine, in-line quantitative perfusion mapping were performed as clinically required. Workflow was optimized to avoid gaps. See Figure 1 for details. Time target <30 min a <35 stress-CMR. considered impactful when its drove changes diagnosis management. Advanced characterization it changed confidence level diagnosis. Images’ quality assessed. ‘control group’ 137 identified among scans before February 2020. Compared average duration dropped by > 30% (CMR: from 42 ± 8 28 6min; stress-CMR: 50 10 34 6min, both P < 0.0001). Independent on protocol, ∼60% cases, 45% cases. Quality grading similar between Tailored protocols did not require additional staff. Conclusions are accurate time-effective cardiomyopathies disease.