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Cited by 810

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High resolution measurement of cerebral blood flow using intravascular tracer bolus passages. Part II: Experimental comparison and preliminary results

Østergaard, Leif, Sorensen, Alma Gregory, Kwong, Kenneth K., Weisskoff, Robert M., Gyldensted, Carsten, Rosen, Bruce R.·1996·Magnetic Resonance in Medicine

Abstract

This report evaluates several methods to map relative cerebral blood flow (rCBF) by applying both parametric and non‐parametric techniques to deconvolve high resolution dynamic MRI measurements of paramagnetic bolus passages with noninvasively determined arterial inputs. We found a nonparametric (singular value decomposition (SVD)) deconvolution technique produced the most robust results, giving mean gray:white flow ratio of 2.7 ± 0.5 (SEM) in six normal volunteers, in excellent agreement with recent PET literature values for age‐matched subjects. Similar results were obtained by using a model‐dependent approach that assumes an exponential residue function, but not for a Gaussian‐shaped residue function or for either Fourier or regularization‐based model‐independent approaches. Pilot studies of our CBF mapping techniques in patients with tumor, stroke, and migraine aura demonstrated that these techniques can be readily used on data routinely acquired by using current echo planar imaging technology. By using these techniques, the authors visualized important regional hemodynamic changes not detectable with rCBV mapping algorithms.

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Authors
Østergaard, L., Sorensen, A. G., Kwong, K. K., Weisskoff, R. M., Gyldensted, C., & Rosen, B. R.
Venue
Magnetic Resonance in Medicine
Publisher
Wiley
Published
1996-11
Volume
36
Issue
5
Pages
726-736
ISSN
  • 0740-3194 (ISSN-L)
  • 1522-2594
OpenAlex
W2157589417
Cited by
810
References
0
FWCI
19.19
Type
journal article
Language
en
Open access
closed

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