The random walk function in the analysis of time-activity curves from dynamic radionuclide studies

Autor:	B Bunday, G Hart, V Kiri
Rok vydání:	1987
Předmět:	Radionuclide Stochastic Processes Time Factors Stochastic process Mathematical analysis General Medicine Function (mathematics) Blood flow Random walk Dilution Esophagus Regional Blood Flow TRACER Curve fitting Humans Radiology Nuclear Medicine and imaging Radionuclide Imaging Mathematics
Zdroj:	Nuclear medicine communications. 8(4)
ISSN:	0143-3636
Popis:	The random walk function is a mathematical function derived from studies of the mass transport and flow of diffusible materials through tubes. Approximations to the function were first used some time ago in the field of cardiac tracer dilution curves, but in the absence of rapid and reproducible curve fitting the method never became commonplace. The current study uses the latest curve-fitting techniques and shows how the method may be used with precision in the analysis of time-activity curves from dynamic oesophageal and blood flow studies. The physiological basis of the method is given and parameters obtained which relate to both the rate of flow and the local dispersion of the bolus.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b08178e7f3c75f92eb8fec0a122b7d8 https://pubmed.ncbi.nlm.nih.gov/3684098 Zobrazit plný text záznamu