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000131733 0247_ $$2doi$$a10.1002/mrm.26649
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000131733 041__ $$aeng
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000131733 1001_ $$0P:(DE-He78)b299ee22cd43915e0ae449c497cedb62$$aPolak, Daniel$$b0$$eFirst author$$udkfz
000131733 245__ $$aWave-CAIPI for highly accelerated MP-RAGE imaging.
000131733 260__ $$aNew York, NY [u.a.]$$bWiley-Liss$$c2018
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000131733 520__ $$aTo introduce a highly accelerated T1-weighted magnetization-prepared rapid gradient echo (MP-RAGE) acquisition that uses wave-controlled aliasing in parallel imaging (wave-CAIPI) encoding to retain high image quality.Significant acceleration of the MP-RAGE sequence is demonstrated using the wave-CAIPI technique. Here, sinusoidal waveforms are used to spread aliasing in all three directions to improve the g-factor. Combined with a rapid (2 s) coil sensitivity acquisition and data-driven trajectory calibration, we propose an online integrated acquisition-reconstruction pipeline for highly efficient MP-RAGE imaging.The 9-fold accelerated MP-RAGE acquisition can be performed in 71 s, with a maximum and average g-factor of gmax  = 1.27 and gavg  = 1.06 at 3T. Compared with the state-of-the-art method controlled aliasing in parallel imaging results in higher acceleration (2D-CAIPIRINHA), this is a factor of 4.6/1.4 improvement in gmax /gavg . In addition, we demonstrate a 57 s acquisition at 7T with 12-fold acceleration. This acquisition has a g-factor performance of gmax  = 1.15 and gavg  = 1.04.Wave encoding overcomes the g-factor noise amplification penalty and allows for an order of magnitude acceleration of MP-RAGE acquisitions. Magn Reson Med 79:401-406, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
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000131733 7001_ $$aSetsompop, Kawin$$b1
000131733 7001_ $$aCauley, Stephen F$$b2
000131733 7001_ $$aGagoski, Borjan A$$b3
000131733 7001_ $$aBhat, Himanshu$$b4
000131733 7001_ $$0P:(DE-He78)4b912fbf89e1e4d1c8eb72b0ea07683a$$aMaier, Florian$$b5$$udkfz
000131733 7001_ $$0P:(DE-He78)29b2f01310f7022916255ddba2750f9b$$aBachert, Peter$$b6$$udkfz
000131733 7001_ $$aWald, Lawrence L$$b7
000131733 7001_ $$aBilgic, Berkin$$b8
000131733 773__ $$0PERI:(DE-600)1493786-4$$a10.1002/mrm.26649$$gVol. 79, no. 1, p. 401 - 406$$n1$$p401 - 406$$tMagnetic resonance in medicine$$v79$$x0740-3194$$y2018
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000131733 9141_ $$y2018
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