A Low-Cost System for Seismocardiography-Based Cardiac Triggering: A Practical Solution for Cardiovascular Magnetic Resonance Imaging at 3 Tesla

IEEE Access

卷:7

Rene Jaros¹  Radana Kahankova¹  Jindrich Brablik¹  Marcel Fajkus¹  Radek Martinek¹  Jakub Kolarik¹  Lukas Soustek¹  Martina Ladrova¹  Petr Krupa²  Pavla Hanzlikova²  Jan Nedoma³  Lubomir Vojtisek⁴ 

[1] Department of Cybernetics and Biomedical Engineering, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, Ostrava, Czech Republic;

[2] Department of Imaging Method, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic;

[3] Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, Ostrava, Czech Republic;

[4] Neuroscience Centre, Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic;

关键词: Seismocardiography-based cardiac triggering;    seismocardiography (SCG);    siemens prisma 3T;    monitor patient vital signs during MRI;    cardiac magnetic resonance imaging (CMRI);   

DOI  :  10.1109/ACCESS.2019.2936184

来源: DOAJ

【 摘 要 】

This study describes a pilot clinical validation of a new low-cost system for the continuous monitoring of the human body's cardiorespiratory activities within the magnetic resonance examination area. This study primarily focuses on monitoring cardiac activity and the related cardiac triggering. The patented system tested by the authors is based on seismocardiography (SCG). The study was conducted on 18 subjects on a Siemens Prisma 3T MR scanner. Standard anatomical and diffusion sequences were used to test cardiac activity monitoring. A wide range of commonly used diagnostic sequences were used to test imaging of the heart by means of cardiac triggering. System functionality was verified against a commercially available electrocardiography (ECG) system. Monitoring of cardiac activity (detection of the R-R interval in ECG and the AO-AO interval in SCG) was objectively evaluated by determining the overall probability of correct detection (ACC), sensitivity (SE), positive predictive value (PPV), and harmonic mean between SE and PPV, i.e. F1. Imaging quality control using Cardiac Triggering was performed by subjective evaluation of images by the physicians. The study conducted clearly confirmed the functionality of the system in terms of continuous cardiac activity monitoring. In all 18 subjects, a mean PPV > 99 % was achieved; F1 > 99 %; SE > 99 %; ACC > 98 %; 1.96σ <; 3.5 bpm. Also, Cardiac Triggering functionality was confirmed by the physicians on the basis of analyzing cardiac images using the T1/T2 balanced echo sequences and the T1 flash sequence measured natively.

【 授权许可】

Unknown