Title :
Rapid 7-dimensional imaging of pulsatile flow
Author :
Firmin, D.N. ; Gatehouse, P.D. ; Konrad, J.P. ; Yang, G.Z. ; Kilner, P.J. ; Longmore, D.B.
Author_Institution :
R. Brompton Nat. Heart & Lung Hospital, London, UK
Abstract :
A method is described for acquiring 7-dimensional information about flowing blood. The acquisition of the 7-dimensions, consisting of 3 spatial, 3 velocity and 1 time, enables a more complete study of blood flow patterns than had previously been possible. In order to reduce the scan time to acceptable levels, the method uses a 2-D selective r.f. pulse to excite a column of tissue and a limited number of phase encoding steps to spatially resolve across the short axes of the column. Phase velocity mapping is used to quantify velocities in 3 perpendicular directions. Recent hardware developments should enable rapid processing of the large data sets acquired
Keywords :
biomedical NMR; blood flow measurement; pulsatile flow; 2D selective RF pulse; blood flow patterns; flowing blood; magnetic resonance imaging; medical diagnostic imaging; perpendicular directions; phase encoding steps; rapid 7-dimensional imaging; scan time reduction; Blood; Encoding; Fluid flow measurement; Hardware; Heart; Hospitals; Lungs; Spatial resolution; Visualization; Volume measurement;
Conference_Titel :
Computers in Cardiology 1993, Proceedings.
Conference_Location :
London
Print_ISBN :
0-8186-5470-8
DOI :
10.1109/CIC.1993.378431
