{{more citations needed, date=April 2017 Fasegraphy is a method for processing

electrocardiograms Electrocardiography is the process of producing an electrocardiogram (ECG or EKG), a recording of the heart's electrical activity. It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the hea ...

(ECG) developed by the International Scientific and Educational Center for Information Technologies and Systems of the

National Academy of Sciences of Ukraine The National Academy of Sciences of Ukraine (NASU; uk, Національна академія наук України, ''Natsional’na akademiya nauk Ukrayiny'', abbr: NAN Ukraine) is a self-governing state-funded organization in Ukraine th ...

and the

Ministry of Education and Science of Ukraine The Ministry of Education and Science of Ukraine ( uk, Міністерство освіти і науки України) is the main body in the system of central bodies of the executive power of Ukraine. History On 28 June 1917 Ivan Steshe ...

. The main

feature Feature may refer to: Computing * Feature (CAD), could be a hole, pocket, or notch * Feature (computer vision), could be an edge, corner or blob * Feature (software design) is an intentional distinguishing characteristic of a software item ...

of the fasegraphy method is the transition from the scalar ECG-signal ''z(t)'' in any of the leads to its mapping on the phase plane with the coordinates ''z''(''t''), ''dz''/''dt'', where ''dz''/''dt'' is the rate of change in the heart electrical activity. It fundamentally distinguishes fasegraphy from other similar approaches, based on the mapping of the signal on the plane with the coordinates ''z''(''t''), ''z''(''t-tau''), where ''tau'' is the time delay. Fasegraphy allows expanding the system of ECG diagnostic features, based on the evaluation of the speed characteristics of the process, and thereby increasing the sensitivity and specificity of ECG-diagnostics. Fasegraphy allows determining the initial features of changes in the

cardiac muscle Cardiac muscle (also called heart muscle, myocardium, cardiomyocytes and cardiac myocytes) is one of three types of vertebrate muscle tissues, with the other two being skeletal muscle and smooth muscle. It is an involuntary, striated muscle tha ...

, even on a single-channel ECG, which are underestimated in traditional ECG diagnostics. The method was recommended by the Ministry of Health of Ukraine for conducting

screening Screening may refer to: * Screening cultures, a type a medical test that is done to find an infection * Screening (economics), a strategy of combating adverse selection (includes sorting resumes to select employees) * Screening (environmental), a s ...

.Application of fasegraphy during the screening of coronary heart disease / Guidelines Ministry of Health of Ukraine. — К., 2017. — 32 p. http://fazagraf.irtc.org.ua/files/Metodichka.pdf

References

*Dori G., Denekamp Y., Fishman S., Roisenthal A., Lewis B.S. Evaluation of the phase-plane ECG as technique for detecting acute coronary oc-clusion // International Journal of Cardiology. – 2002. – Issue 84. – P. 161–170. *Fainzilberg L.S. Heart functional state diagnostic using pattern recognition of phase space ECG-images.– Proc. of the 6th European Congress on Intelligent Techniques and Soft Computing (EUFIT ’98), Germany, 1998, vol. 3, pp. 1878-1882. *Fainzilberg L.S. ECG Averaging based on Hausdorff Metric // International Journal of Biomagnetism.- 2003. — Vol. 5. — No. 1. — P. 236–237. *Fainzilberg L.S. Restoration of a Standard Sample of Cyclic Waveforms with the Use of the Hausdorff Metric in a Phase Space // Cybernetics and Systems Analysis. – 2003. – Vol. 39.– Number 3. – P. 338–344. *Plesnik E., Milenković J., Malgina O., Zajc M., Tasič J. F. Določanje značilk in klasifikacija signalov EKG na osnovi zaznavanja točk R v faznem prostoru // Devetnajsta mednarodna Elektrotehniška in Računalniška Konferenca ERK-2010 (20-22 September 2010, Portorož, Slovenija). – 2010. – Zv. B. – S. 323–326. Electrodiagnosis

References

Further reading