Abstract
To implement a flow-gating method to acquire phase-contrast (PC) images of carotid arteries without use of an electrocardiography (ECG) signal to synchronize the acquisition of imaging data with pulsatile arterial flow. The flow-gating method was realized through radial scanning and sophisticated post-processing methods including downsampling, complex difference, and correlation analysis to improve the evaluation of flow-gating times in radial phase-contrast scans. Quantitatively comparable results (R = 0.92–0.96, n = 9) of flow-related parameters, including mean velocity, mean flow rate, and flow volume, with conventional ECG-gated imaging demonstrated that the proposed method is highly feasible. The radial flow-gating PC imaging method is applicable in carotid arteries. The proposed flow-gating method can potentially avoid the setting up of ECG-related equipment for brain imaging. This technique has potential use in patients with arrhythmia or weak ECG signals.
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Calderon-Arnulphi M, Amin-Hanjani S, Alaraj A, Zhao M, Du X, Ruland S, Zhou XJ, Thulborn KR, Charbel FT (2011) In vivo evaluation of quantitative MR angiography in a canine carotid artery stenosis model. AJNR Am J Neuroradiol 32(8):1552–1559. doi:10.3174/ajnr.A2546
ten Dam VH, Box FM, de Craen AJ, van den Heuvel DM, Bollen EL, Murray HM, van Buchem MA, Westendorp RG, Blauw GJ (2005) Lack of effect of pravastatin on cerebral blood flow or parenchymal volume loss in elderly at risk for vascular disease. Stroke 36(8):1633–1636
Steinman DA, Thomas JB, Ladak HM, Milner JS, Rutt BK, Spence JD (2002) Reconstruction of carotid bifurcation hemodynamics and wall thickness using computational fluid dynamics and MRI. Magn Reson Med 47(1):149–159. doi:10.1002/mrm.10025
Marshall I (2010) Computational simulations and experimental studies of 3D phase-contrast imaging of fluid flow in carotid bifurcation geometries. J Magn Reson Imaging 31(4):928–934. doi:10.1002/jmri.22096
Carvalho JL, Nielsen JF, Nayak KS (2010) Feasibility of in vivo measurement of carotid wall shear rate using spiral Fourier velocity encoded MRI. Magn Reson Med 63(6):1537–1547. doi:10.1002/mrm.22325
Liu Y, Karonen JO, Vanninen RL, Nuutinen J, Koskela A, Soimakallio S, Aronen HJ (2004) Acute ischemic stroke: predictive value of 2D phase-contrast MR angiography–serial study with combined diffusion and perfusion MR imaging. Radiology 231(2):517–527
de Boorder MJ, Hendrikse J, van der Grond J (2004) Phase-contrast magnetic resonance imaging measurements of cerebral autoregulation with a breath-hold challenge: a feasibility study. Stroke 35(6):1350–1354
Nacif MS, Zavodni A, Kawel N, Choi EY, Lima JA, Bluemke DA (2011) Cardiac magnetic resonance imaging and its electrocardiographs (ECG): tips and tricks. Int J Cardiovasc Imaging. doi:10.1007/s10554-011-9957-4
Larson AC, White RD, Laub G, McVeigh ER, Li D, Simonetti OP (2004) Self-gated cardiac cine MRI. Magn Reson Med 51(1):93–102
Thompson RB, McVeigh ER (2004) Flow-gated phase-contrast MRI using radial acquisitions. Magn Reson Med 52(3):598–604
Macgowan CK, Liu GK, van Amerom JF, Sussman MS, Wright GA (2010) Self-gated Fourier velocity encoding. Magn Reson Imaging 28(1):95–102. doi:10.1016/j.mri.2009.05.021
Liu J, Spincemaille P, Codella NC, Nguyen TD, Prince MR, Wang Y (2010) Respiratory and cardiac self-gated free-breathing cardiac CINE imaging with multiecho 3D hybrid radial SSFP acquisition. Magn Reson Med 63(5):1230–1237. doi:10.1002/mrm.22306
Bernstein MA, Ikezaki Y (1991) Comparison of phase-difference and complex-difference processing in phase-contrast MR angiography. J Magn Reson Imaging 1(6):725–729
Polzin JA, Alley MT, Korosec FR, Grist TM, Wang Y, Mistretta CA (1995) A complex-difference phase-contrast technique for measurement of volume flow rates. J Magn Reson Imaging 5(2):129–137
Thompson RB, McVeigh ER (2003) Real-time volumetric flow measurements with complex-difference MRI. Magn Reson Med 50(6):1248–1255
Wedeen VJ, Rosen BR, Buxton R, Brady TJ (1986) Projective MRI angiography and quantitative flow-volume densitometry. Magn Reson Med 3(2):226–241
Tsai SY, Wu MT, Lin YR, Hsieh KS, Lin CC, Huang TY, Chung HW, Pan JY, Huang YL, Pan HB, Yang CF (2006) Temporal correlation-based dynamic contrast-enhanced MR imaging improves assessment of complex pulmonary circulation in congenital heart disease. Magn Reson Med 56(3):517–526. doi:10.1002/mrm.21001
Jackson JI, Meyer CH, Nishimura DG, Macovski A (1991) Selection of a convolution function for Fourier inversion using gridding. IEEE Trans Med Imaging 10(3):473–478. doi:10.1109/42.97598
Alperin N, Lee SH (2003) PUBS: pulsatility-based segmentation of lumens conducting non-steady flow. Magn Reson Med 49(5):934–944. doi:10.1002/mrm.10455
Huang TY, Chung HW, Chen MY, Giiang LH, Chin SC, Lee CS, Chen CY, Liu YJ (2004) Supratentorial cerebrospinal fluid production rate in healthy adults: quantification with two-dimensional cine phase-contrast MR imaging with high temporal and spatial resolution. Radiology 233(2):603–608. doi:10.1148/radiol.2332030884
Damji AA, Snyder RE, Ellinger DC, Witkowski FX, Allen PS (1988) RF interference suppression in a cardiac synchronization system operating in a high magnetic field NMR imaging system. Magn Reson Imaging 6(6):637–640
Polson MJ, Barker AT, Gardiner S (1982) The effect of rapid rise-time magnetic fields on the ECG of the rat. Clin Phys Physiol Meas 3(3):231–234
Rokey R, Wendt RE, Johnston DL (1988) Monitoring of acutely ill patients during nuclear magnetic resonance imaging: use of a time-varying filter electrocardiographic gating device to reduce gradient artifacts. Magn Reson Med 6(2):240–245
Shetty AN (1988) Suppression of radiofrequency interference in cardiac gated MRI: a simple design. Magn Reson Med 8(1):84–88
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Supported in part by the National Science Council under grants NSC 100-2628-E-011 and NSC 100-2911-I-007-501.
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Peng, HH., Huang, TY., Wang, FN. et al. Flow-gated radial phase-contrast imaging in the presence of weak flow. Int J Cardiovasc Imaging 29, 131–140 (2013). https://doi.org/10.1007/s10554-012-0056-y
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DOI: https://doi.org/10.1007/s10554-012-0056-y