Cardiovascular magnetic resonance physics for clinicians: part II

Table 1 Acceleration Techniques

	Reduced matrix in the phase encoding direction	Reduced field of view in the phase encoding direction	Half -Fourier acquisition	Parallel Imaging		Temporal under-sampling
	Reduced matrix in the phase encoding direction	Reduced field of view in the phase encoding direction	Half -Fourier acquisition	Image-based reconstruction	k-space-based reconstruction	Temporal under-sampling
Common names	Scan %	Rectangular FOV (RFOV)	Half Fourier	SENSE	SMASH	View-sharing
				mSENSE*	GRAPPA*	Keyhole
				ASSET	ARC*	UNFOLD
				SPEEDER		TSENSE
						Kt-BLAST
	Phase resolution		Partial Fourier
			Half Scan
			0.5 NEX
		Phase FOV
		Asymmetric FOV
	Zero Padding	Asymmetric FOV
Reference Number	[25, 26]	[26]	[25, 27]	[25, 28, 29]	[25, 28, 30]	[25, 28, 31, 32]

*Self calibrating (auto-calibrating) techniques – reference data acquired as part of acquisition.
Summary of acceleration techniques where the data acquisition time is shortened by reducing the number of phase encoding steps.

ISSN: 1532-429X