Signal analysis of impulse response functions in MR and CT measurements of cerebral blood flow.
The impulse response function (IRF) of a localized bolus in cerebral blood flow codes important information on the tissue type. It is indirectly accessible both from MR and CT imaging methods, at least in principle. In practice, however, noise and limited signal resolution render standard deconvolution techniques almost useless. Parametric signal descriptions look more promising, and it is the aim of this contribution to develop some improvements along this line.
Rost
Evelyn
E
Fakultät für Mathematik, Universität Bielefeld, Box 10 01 31, 33501 Bielefeld, Germany.
Geske
Ralf
R
Baake
Michael
M
D001776:Blood Circulation Time; D001812:Blood-Brain Barrier; D001927:Brain Diseases / Q000175:diagnosis; D002560:Cerebrovascular Circulation; D005583:Fourier Analysis; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging; D008833:Microcirculation; D014057:Tomography, X-Ray Computed