title: MR angiography and arterial spin labelling.
abstract: MRI offers the ability to visualise and measure blood flow in the human body non-invasively. MR angiography (MRA) provides images of the arterial blood vessels within the body and allows measurement of blood velocities along these arteries. Arterial spin labelling (ASL) is a method for measuring the perfusion of blood into tissue (i.e. blood flow at the capillary level). This provides a key indicator of nutrient supply to the tissue. In this chapter, we have described the technical basis and practical implementation of these methods, emphasising their non-invasive (no contrast agents required) and quantitative nature.
authors.affiliation: Department of Medical Physics and Bioengineering, University College London, London, UK. thomas@medphys.ucl.ac.uk
authors.forename: David
authors.initials: D
authors.lastname: Thomas
authors.forename: Jack
authors.initials: J
authors.lastname: Wells
mesh_terms: D000818:Animals; D001158:Arteries / Q000033:anatomy & histology*; D001921:Brain / Q000098:blood supply / Q000000981:diagnostic imaging; D002560:Cerebrovascular Circulation / Q000502:physiology; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D011859:Radiography; D051381:Rats; D015203:Reproducibility of Results; D013113:Spin Labels; D013997:Time Factors
chemical_list: D013113:Spin Labels