Zero filled partial Fourier phase contrast MR imaging: In vitro and in vivo assessment

Gilberto Szarf, Yoav Dori, Dan Rettmann, Aylin Tekes, Khurram Nasir, Luciano Amado, Thomas K.F. Foo, David A. Bluemke

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Purpose: To validate partial Fourier phase contrast magnetic resonance (PC MR) with full number of excitation (NEX) PC MR measurements in vitro and in vivo. Materials and Methods: MR flow measurements were performed using a partial Fourier and a full NEX PC MR sequence in a flow phantom and in 10 popliteal and renal arteries of 10 different healthy volunteers. Average velocity, peak velocity, and flow results were calculated and compared with regression analysis. Results: Excellent correlations in average velocities (r = 0.99, P < 0.001), peak velocities (r = 0.99, P < 0.001), and flow rates (r = 0.98, P < 0.001) were demonstrated in vitro between the two different acquisitions. For the popliteal arteries there was excellent correlation between peak velocities for both acquisitions (r = 0.98, P < 0.0001); the correlation of average velocity measurements when using all data points in the cardiac cycle for all volunteers was 0.96 (P < 0.001). For the renal arteries the same comparison resulted in a good correlation for average velocity (0.93, P < 0.001) and peak velocity measurements (r = 0.91, P = 0.002), although the correlation coefficient for flow rates was 0.88 (P = 0.004). Blurring of the vessel margins was consistently observed on magnitude images acquired with the partial Fourier method, causing overestimation of the vessel area and some error to the flow measurements. Conclusion: Partial Fourier PC MR is able to provide comparable average and peak velocity values when using 1 NEX PC MRI as a reference.

Original languageEnglish (US)
Pages (from-to)42-49
Number of pages8
JournalJournal of Magnetic Resonance Imaging
Volume23
Issue number1
DOIs
StatePublished - Jan 2006

Keywords

  • Blood vessels, MR
  • Blood vessels, flow dynamics
  • Magnetic resonance (MR), phase imaging
  • Magnetic resonance (MR), vascular studies
  • Phantoms

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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