title: The resistive index as a function of vessel diameter in the human carotid arterial tree.
abstract: The average resistive index (RI) as a function of the average vessel diameter (D) was studied in the human carotid arterial tree. Data were used from previously published research measurements taken from 505 different vessels of 371 healthy humans. When the RI from the carotid arteries was included in the data set the standard trend lines did not give efficient fits. However, when only data from the eye were used, the Neperian logarithmic function gave a best fit with a correlation coefficient r=0.99 and an absolute relative error less than 2.6%. This logarithmic model could be proved a valuable tool for both basic research and clinical practice in the human eye.
authors.affiliation: Bio-Medical Informatics Laboratory, Department of Medical Laboratories, School of Health Sciences, Technological Educational Institute (TEI) of Larissa, Larissa, Greece. ariskout@otenet.gr
authors.forename: Aristotle G
authors.initials: AG
authors.lastname: Koutsiaris
mesh_terms: D000328:Adult; D001158:Arteries / Q000473:pathology*; D001794:Blood Pressure; D002339:Carotid Arteries / Q000503:physiopathology*; D019295:Computational Biology; D003198:Computer Simulation; D006439:Hemodynamics; D006801:Humans; D008875:Middle Aged; D008962:Models, Theoretical; D015203:Reproducibility of Results; D012984:Software; D014655:Vascular Resistance; D055815:Young Adult