Fig. 1

Design specifications of the CMR-ECGI vest and bird’s eye view of the high-throughput CMR-ECGI workflow. a The washable and re-usable CMR-ECGI vest is a cotton garment embroidered with 256 dry square textile electrodes (2 × 2 cm) and is designed to fit to a wide range of body habitus and size. Each embroidered electrode has graphite-snap connectors at the centre and Velcro fasteners at the side. b Fully mounted anterior electrode vest with 127 anterior ECG leads attached. The CMR-ECGI vest is fitted to the anterior and posterior torso of the participant in the supine position to allow for a 5-min recording at rest. c Multiple body surface potentials are collected and amplified using a multi-channel biosignal amplifier. d The participant proceeds to comprehensive CMR imaging at 3T. e The trans-axial anatomical HASTE stack allows for cardiac segmentation and electrode landmark localisation to create a detailed model of heart and torso geometry. f Data from the body surface potentials are then combined with the heart and torso geometry to solve the inverse solution of ECGI generating epicardial electrograms and isochrone maps of cardiac activation and repolarization. AT activation time, RT repolarization time, CMR cardiovascular magnetic resonance, ECGI electrocardiographic imaging, HASTE Half-Fourier acquisition single-shot turbo spin echo, T Tesla