Effects of stenosis geometry on magnitude magnetic resonance imaging Conference Paper

abstract

• Flow measurement with magnetic resonance (MR) images has been possible since the advent of nuclear magnetic resonance in the 1940's. Recently, MRI has been used to generate high resolution images of the cardiovascular system. Magnitude flow images are now routinely obtained for use in the clinical diagnosis of heart valve disease. However, few papers have compared MR images of controlled flow situations to standard techniques of fluid flow measurement. In order to reduce the biological variabilities with in vivo MR imaging, it is necessary to study in vitro phantom models which can be tested using traditional fluid mechanics techniques. It is our objective to characterize the abilities and limitations of MR flow imaging and gain a better understanding of the clinical images of the cardiovascular system. This paper describes magnitude images obtained from flow passing through a smooth stenosis and a sharp-edged orifice under a physiologically relevant Reynolds number.

authors

• Pettigrew, Roderic

published proceedings

• American Society of Mechanical Engineers, Applied Mechanics Division, AMD

author list (cited authors)

• Biancheri, C., Ku, D. N., Pettigrew, R. I., Yoganathan, A., & Dixon, T.

complete list of authors

• Biancheri, C||Ku, DN||Pettigrew, RI||Yoganathan, A||Dixon, T

publication date

• December 1989

published in

• ASME Applied Mechanics Division -Publications- Amd  Journal

start page

• 13

end page

• 16

volume

• 98