Uncovering the mechanisms by which acupuncture improves motor function after stroke through neuroplasticity revealed by magnetic resonance imaging techniques.

Background: The motor function defects in stroke patients are mainly caused by damage to brain neurons and network disconnection, as viewed through neuroimaging. Structural and functional magnetic resonance imaging (sMRI and fMRI) are the most commonly used techniques in studying central nervous system diseases. This article reviews recent technological research to provide evidence for acupuncture research and development. Materials and Methods: Relevant articles were obtained from PubMed and China national knowledge infrastructure (CNKI) databases, as well as from CNKI database from 2014 to 2023. The data were then reviewed and the citations were examined. Results: The non-invasive technique of magnetic resonance imaging (MRI) is highly effective in accurately identifying abnormal brain activities, making it a top choice. As MRI technology rapidly evolves, additional techniques such as diffusion kurtosis imaging (DKI), diffusion spectrum imaging (DSI), and neurite orientation dispersion and density imaging (NODDI) can be used to observe post-IS motor neural injuries and related neural reshaping. Conclusions: These techniques about MRI could help doctors better understand the biological mechanisms underlying neural pathways and motor deficits in IS, aiding in the development of targeted therapies. [ABSTRACT FROM AUTHOR]