eng Science and Education Publishing American Journal of Medical Sciences and Medicine 2327-6657 2023-08-13 11 3 67 73 10.12691/ajmsm-11-3-1 AJMSM20231131 article Nguyen Hoang Tin 1 Tran Thai Thanh Tam 1 Phung Minh Thu pmthu@ctump.edu.vn 2 Department of Physiology, Faculty of Medicine, Can Tho University of Medicine and Pharmacy, 179 Nguyen Van Cu Street, Can Tho City, Vietnam. Department of Pathology and Forensic Medicine, Faculty of Medicine, Can Tho University of Medicine and Pharmacy, 179 Nguyen Van Cu Street, Can Tho City, Vietnam. Because of its ease of application, cheap cost, and non-invasiveness, research on rheoencephalography (REG) parameters for the early identification of cerebrovascular atherosclerotic lesions is of significant interest to scientists. The purpose of neuromonitoring in both the neurosurgical critical care unit and during the evacuation of injured military service personnel is to avoid brain injury caused by cerebral blood flow autoregulation failure. There is currently no one measuring technique capable of monitoring brain injuries such as hypoxia, ischemia, high intracranial pressure, edema, intracranial hemorrhage, and vasospasm. The identical results obtained by laser Doppler flowmetry and rheoencephalography show that REG, like laser Doppler flowmetry, represents cerebral blood flow autoregulation. As a result, REG has the potential to be used as a continuous neuromonitoring approach. Therefore, we examined the available databases from prior REG investigations. We hope to organize the essential aspects concerning the equipment, methodologies, and REG wave findings based on document comparison and synthesis. Although REG has less clinical use in the diagnosis of cerebrovascular illness, it may offer information on changes in cerebral circulation that occur with age or diffuse cerebrovascular disease. In summary, our findings suggest that the bioimpedance technique (REG) may identify the first indication of cerebral arteriosclerosis, which is the loss of flexibility of cerebral arteries. http://pubs.sciepub.com/ajmsm/11/3/1/ajmsm-11-3-1.pdf rheoencephalography REG; noninvasive neuromonitoring cerebrovascular cerebral blood flow autoregulation