Accelerated phase-contrast cine MRI using k-t SPARSE-SENSE

Daniel Kim, Hadrien A. Dyvorne, Ricardo Otazo, Li Feng, Daniel K. Sodickson, Vivian S. Lee

    Research output: Contribution to journalArticle

    Abstract

    Phase-contrast (PC) cine MRI is a promising method for assessment of pathologic hemodynamics, including cardiovascular and hepatoportal vascular dynamics, but its low data acquisition efficiency limits the achievable spatial and temporal resolutions within clinically acceptable breath-hold durations. We propose to accelerate PC cine MRI using an approach which combines compressed sensing and parallel imaging (k-t SPARSE-SENSE). We validated the proposed 6-fold accelerated PC cine MRI against 3-fold accelerated PC cine MRI with parallel imaging (generalized autocalibrating partially parallel acquisitions). With the programmable flow pump, we simulated a time varying waveform emulating hepatic blood flow. Normalized root mean square error between two sets of velocity measurements was 2.59%. In multiple blood vessels of 12 control subjects, two sets of mean velocity measurements were in good agreement (mean difference = -0.29 cm/s; lower and upper 95% limits of agreement = -5.26 and 4.67 cm/s, respectively). The mean phase noise, defined as the standard deviation of the phase in a homogeneous stationary region, was significantly lower for k-t SPARSE-SENSE than for generalized autocalibrating partially parallel acquisitions (0.05 ± 0.01 vs. 0.19 ± 0.06 radians, respectively; P < 0.01). The proposed 6-fold accelerated PC cine MRI pulse sequence with k-t SPARSE-SENSE is a promising investigational method for rapid velocity measurement with relatively high spatial (1.7 mm A- 1.7 mm) and temporal (∼35 ms) resolutions.

    Original languageEnglish (US)
    Pages (from-to)1054-1064
    Number of pages11
    JournalMagnetic resonance in medicine
    Volume67
    Issue number4
    DOIs
    StatePublished - Apr 2012

    Keywords

    • MRI
    • PC MRI
    • blood flow
    • compressed sensing
    • liver
    • parallel imaging
    • velocity

    ASJC Scopus subject areas

    • Radiology Nuclear Medicine and imaging

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    Kim, D., Dyvorne, H. A., Otazo, R., Feng, L., Sodickson, D. K., & Lee, V. S. (2012). Accelerated phase-contrast cine MRI using k-t SPARSE-SENSE. Magnetic resonance in medicine, 67(4), 1054-1064. https://doi.org/10.1002/mrm.23088