E.A. Yumatov
Dr. Sc. (Med.), Professor, Member of International AS (IAS); Chief Research Scientist, P.K. Anokhin Scientific Research Institute
of Normal Physiology; Chief Research Scientist, I. M. Sechenov First Moscow State Medical University; Professor,
National Research University «Moscow Power Engineering Institute»
E-mail: eayumatov@mail.ru
A.E. Khramov
Dr. Sc. (Phys.-Math.), Professor, Chief Research Scientist, Head of the Department,
Gagarin Yu.A. Saratov State Technical University
E-mail: hramovae@gmail.com
V.V. Grubov
Ph.D. (Phys.-Math.), Senior Research Scientist, Assistant, Gagarin Yu.A. Saratov State Technical University
E-mail: vvgrubov@gmail.com
O.S. Glazachev
Dr. Sc. (Med.), Professor, Member of International AS (IAS); Head of laboratory,
I.M. Sechenov First Moscow State Medical University
E-mail: glazachev@mail.ru
E.N. Dudnik
Ph.D. (Med.), Associate Professor, I.M. Sechenov First Moscow State Medical University.
E-mail: elenad72@list.ru
N.A. Karatigin
Ph.D. (Biol.), Junior Research Scientist, P.K. Anokhin Scientific Research Institute of Normal Physiology (Moscow)
E-mail: nikolaseve@yandex.ru

S.K. Pinaev
Ph.D. (Med.), Senior Research Scientist, Laboratory of Medical Informatics,
Computer Center of the Far Eastern Branch of the Russian Academy of Sciences (Khabarovsk)
E-mail: pinaev@mail.ru
O.G. Pinaeva
Senior Lecturer, Department of Normal and Pathological Physiology,
Far State Medical Eastern Federal University of the Ministry of Health of the Russian Federation (Khabarovsk)
E-mail: pinaeva_og@mail.ru
A.Ya. Chizhov
Honored Worker of Science of the Russian Federation, Academician of the Russian Ecological Academy,
D.Sc.(Med.), Professor, Department of Judicial Ecology with a Course of Ecology of the Person,
Ecological Faculty, Peoples' Friendship University of Russia (Moscow);
Medico-Ecological Center "Mountain Air 21st Century" (Moscow)
E-mail: ma21@mail.ru

E.V. Damyanovich
Ph.D. (Med.), Senior Research Scientist, Research Center of Neurology (Moscow)
E-mail: damjanov@iitp.ru
B.Kh. Baziyan
Sc.D. (Biol.), Head of the Laboratory, Neurocybernetics of Research Center of Neurology (Moscow)
E-mail: baz123@yandex.ru

V.I. Petrosyan
Ph.D. (Phys.-Math.), Leading Research Scientist,
TELEMAK Scientific And Production Firm (Saratov)
E-mail: voldemarakva@yandex.ru
G.E. Brill
Dr. Sc. (Med.), Professor, Department Pathological Physiology n. a. A.A. Bogomolets,
Saratov State Medical University n.a. V.I. Razumovsky;
Academician of the World Academy Biomedical Technologies (WABT, Unesco)
E-mail: gbrill@yandex.ru

S.V. Savel’ev
Ph.D. (Phys.-Math.), Senior Research Scientist,
Fryazino Institute Radio Engineerings and Electronic Engineers n.a. V.A. Kotelnikov of RAS
E-mail: savelyev@ms.ire.rssi.ru
O.V. Betskii
Dr.Sc. (Phys.-Math), Professor, Scientific Consultant,
Fryazino Institute Radio Engineerings and Electronic Engineers n.a. V.A. Kotelnikov of RAS
E-mail: betskii@yandex.ru
L.A. Morozova
Leading Engineer, Fryazino Institute Radio Engineerings and Electronic Engineers n.a. V.A. Kotelnikov of RAS
V.S. Vasil’ev
Junior Research Scientst, Fryazino Institute Radio Engineerings and Electronic Engineers n.a. V.A. Kotelnikov of RAS

In magnetic resonance imaging (MRI), the gradient recalled echo (GRE) sequence became a powerful tool for classification of biological tissues due its sensitivity to structural heterogeneities of mesoscopic and macroscopic scale. The atomic scale heterogeneities, determined by spin-spin interaction of protons, can be imaged in contrast of transverse relaxation time T2, obtained in spin-echo (SE) sequence. For many years, the SE sequence was the only way to measure T2 accurately because, in GRE sequence, this parameter is masked by more rapid decay of the signal due to magnetic gradients. First attempts to evaluate - even not exactly measure - T2 in GRE sequences revealed serious algorithmic problems. Recently introduced new solution to this problem - multipoint algorithm with clamping (MPC) - opens the possibility for accurate and fast measurements of T2 in GRE sequences. The present short communication presents quantitative statistical confirmation of its performance on phantoms. It is shown that MPC algorithm produces accurate measurements of T2 in GRE sequences with average discrepancies of about 2% on small magnetic heterogeneities and 8% on the large ones with Pearson coefficients in the range 0.9-0.95. Commonly accepted in practice evaluation of T2 on GRE sequences by means of monoexponential fitting (the so-called  values) gives inadequate average values with errors of about 30% and Pearson coefficient of only 0.7.

I.V. Belik
Assistant Researcher, Department of Biochemistry, Institute of Experimental Medicine (St.-Petersburg)
E-mail: ivanbelik2014@ya.ru
A.A. Ivantsova
Assistant Researcher, Department of Biochemistry, Institute of Experimental Medicine (St.-Petersburg)
E-mail: anna.ivantcova@gmail.com
Z.E. Mamedova
Cardiologist, Clinic of Institute of Experimental Medicine (St.-Petersburg)
E-mail: mamedovazumrud@mail.ru

M.V. Gulyaev
Ph. D. (Phys.-Math.), Senior Research Scientist, Faculty of fundamental medicine, M.V. Lomonosov Moscow State University
E-mail: gulyaev@physics.msu.ru
O.S. Pavlova
Post-graduate Student, Engineer-Laboratory Assistant, Faculty of fundamental medicine, M.V. Lomonosov Moscow State University
E-mail: ofleurp@mail.ru
D.V. Volkov
Student, Faculty of Physics, M.V. Lomonosov Moscow State University
E-mail: mdanf1@gmail.com
N.V. Anisimov
Dr.Sc.(Phys.-Math.), Senior Research Scientist, Faculty of fundamental medicine, M.V. Lomonosov Moscow State University
E-mail: anisimovnv@mail.ru
Yu. A. Pirogov
Dr.Sc. (Phys.-Math.), Professor, Faculty of Physics, M.V. Lomonosov Moscow State University
E-mail: yupi937@gmail.com

I.A. Cherenkov
Ph.D. (Biol.), Associate Professor, Department of Anatomy and Physiology of Human and Animals,
Udmurt State University (Izhevsk); Associate Professor, Department of Biology and Ecology, Izhevsk State Medical Academy
E-mail: ivch75@yandex.ru
V. G. Sergeev
Dr. Sc. (Biol.), Professor, Department of Anatomy and Physiology of Human and Animals, Udmurt State University (Izhevsk);
Head of the Educational and Experimental Laboratory, Izhevsk State Medical Academy
E-mail: cellbio@yandex.ru
E.S. Nikitina
Master Student of Program «Cell biology», Udmurt State University (Izhevsk)
E-mail: elenanikitina.94@mail.ru
I. L. Ivanova
Ph.D. (Med.), Associate Professor, Department of Neurology and Medical Genetics, Izhevsk State Medical Academy,
Scientific Adviser of Respublic Center Parkinson Disease and Movement Disorders (Izhevsk)
E-mail: urairiva@yandex.ru

R.V. Veiko
Research Scientist, Research Centre for Medical Genetics (Moscow)
E-mail: db-mail-dbase@yandex.ru

D.S. Lysenko
Senior Lecturer, Academy of Physical Culture and Sports of the Southern Federal University (Rostov-on-Don)
E-mail: dslysenko@sfedu.ru
L.E. Kiseleva
Аssociate Рrofessor, Academy of Physical Culture and Sports of the Southern Federal University (Rostov-on-Don)
E-mail: dslysenko@sfedu.ru
A.V. Lysenko
Dr.Sc. (Biol.), Professor, Academy of Physical Culture and Sports of the Southern Federal University (Rostov-on-Don)
E-mail: alysenko@sfedu.ru
A.V. Petrov
Student, Academy of Physical Culture and Sports of the Southern Federal University (Rostov-on-Don)
E-mail: dslysenko@sfedu.ru

O.E. Petrunia
Ph.D. (Philos.), Associate Professor, Department of Philosophy, Moscow Aviation Institute (National Research University)
E-mail: hypostasis@yandex.ru
A.A. Kozlyakov
Lecturer, Department of Administrative Activity, Moscow University of the Ministry of internal Affairs of the Russian Federation
Tver branch
E-mail: storka2006@mail.ru