Method to correct for the effects of limited spatial resolution in phase-contrast flow MRI measurements

• Published in: Magnetic resonance in medicine Vol. 48; no. 5; pp. 883 - 889
• Main Authors: Lagerstrand, K.M, Lehmann, H., Starck, G., Vikhoff-Baaz, B., Ekholm, S., Forssell-Aronsson, E.
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc., A Wiley Company 01.11.2002; Williams & Wilkins
• Subjects: Biological and medical sciences; Blood Flow Velocity; flow velocity; Fourier Analysis; Humans; Investigative techniques, diagnostic techniques (general aspects); limited k-space sampling; magnetic resonance imaging; Magnetic Resonance Imaging - methods; Medical sciences; Miscellaneous. Technology; Phantoms, Imaging; phase contrast; Pulsatile Flow; Radiodiagnosis. Nmr imagery. Nmr spectrometry; test object; Human; magnetic resonance imaging; Healthy subject; test object; Volunteer; Method; Experimental study; Nuclear magnetic resonance imaging; In vitro; Result; In vivo; Accuracy; limited k-space sampling; Phase contrast; Medical imagery; Influence; Flow velocity; Hemodynamics; Technique; Spatial resolution; Corrections; Comparative study
• ISSN: 0740-3194; 1522-2594
• DOI: 10.1002/mrm.10288

Phase‐contrast (PC) magnetic resonance imaging (MRI) flow measurements suffer from the effect of the point spread function (PSF) due to the limited sampling of k‐space. The PSF, which in this case is a sinc function, deforms the flow profile and forms a ringing pattern around the vessel. In this wor...