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Among the set of phenomena belonging to the field of magnetic resonance, the most extensive applications have been implemented for nuclear magnetic resonance (NMR) in condensed media, which was detected in 1946 (recall that the first NMR spectra were obtained/published in 1937 as a result of experiments with atomic beams in vacuum).The victorious development of NMR is decorated with five Nobel Prizes (the last two in this millennium).The goal of this special issue is to set off some perspective directions in the field of NMR and its applications.Although the articles collected in this issue cannot cover all aspects of contemporary trends, they may provide insight into the current state-of-the-art and opportunities of interesting research.Besides, they illustrate the natural circulation: past and current research leads to practical applications that stimulate new research.One of the most important NMR applications is magnetic resonance imaging (MRI)-an interdisciplinary field of science at the interface of physics, chemistry, computer science, engineering, and medicine.Despite the numerous advantages and achievements of the modern MRI methods, there exist justified search for and development of new methodological techniques, as well as tendencies for their early implementation in clinical practice.To a large extent, this applies to the diagnostics of respiratory diseases which are the leading cause of death and disabilities worldwide.Current clinical approaches in diagnostics and monitoring of such diseases are based on Computed Tomography (CT) and Positron Emission Tomography (PET).However, they use harmful ionizing radiation and cannot be used in pediatric studies and in cases where frequent monitoring is required.The hallmarks of MRI are its harmless, non-destructive and non-contact features.One of MRI methods in this field is called Phase-REsolved FUnctional Lung (PREFUL) MRI.This special issue starts with the article "Automated image registration and perfusion sorting Applied Magnetic Resonance
Chizhik et al. (Thu,) studied this question.