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A Novel 3D Camera-based ECG-Imaging System for Electrode Position Discovery and Heart-Torso Registration
  • +6
  • Nikhil Shenoy,
  • Maryam Toloubidokhti,
  • Omar Gharbia,
  • Mirmilad P Khoshknab,
  • Saman Nazarian,
  • John L Sapp,
  • Vivek Singh,
  • Ankur Kapoor,
  • Linwei Wang
Nikhil Shenoy

Corresponding Author:[email protected]

Author Profile
Maryam Toloubidokhti
Omar Gharbia
Mirmilad P Khoshknab
Saman Nazarian
John L Sapp
Vivek Singh
Ankur Kapoor
Linwei Wang


ECG-imaging has been receiving increasing clinical and commercialization interest as a non-invasive technology for computing cardiac electrical activity and facilitating clinical management of heart rhythm disorders. Despite its potential, the standard ECG-imaging pipeline requires thorax imaging for constructing patient-specific heart-thorax geometry – being outside standard-of-care clinical workflow, this component constitutes a major barrier to the clinical adoption of ECG-imaging. The advent of 3D cameras into ECG-imaging workflow to replace thorax imaging has shown promise, although existing works largely neglect the registration between camera-derived thorax models with an individual’s heart geometry. In this work, we address this gap with a novel system that generates patient-specific torso geometry using a 3D camera, registers the torso to heart geometry obtained from preexisting cardiac scans, and optimally deforms the torso to the skin surface of the patient. We evaluated the presented camera-based ECG-imaging system on five patients undergoing ablation of scar-related ventricular tachycardia, where we evaluate both the accuracy of the surface electrode localization and the ECG-imaging solutions in comparison to those obtained from computed tomography based thorax imaging. We further evaluate the use of the presented camera-based patient-specific heart-thorax model versus a generic heart-thorax model, highlighting the importance of the registration between the camera-based thorax models with cardiac scans. 
06 Mar 2024Submitted to TechRxiv
11 Mar 2024Published in TechRxiv