k-t ISD: Dynamic Cardiac MR Imaging Using Compressed Sensing with Iterative Support Detection

. Author manuscript; available in PMC: 2015 Aug 22.

Published in final edited form as: Magn Reson Med. 2011 Nov 23;68(1):41–53. doi: 10.1002/mrm.23197


Algorithm 1. Pseudocode for k-t ISD

1.	Initialize W⁰
2.	For i = 1,2,⋯, do following until convergence
	[1] Reconstruct ρⁱ based on Wⁱ⁻¹ using [14], which is implemented by the following steps of FOCUSS:
	a. Initialize D⁰
	b. For i = 1,2,⋯, do the following until convergence
	i. Reconstruct ρⁱ using ℓ₂ minimization in [10]
	ii. Update D^l using [11]
	c. Use ρ^l for ρⁱ after convergence
	[2] Update detected support Tⁱ and Wⁱ based on ρⁱ using thresholding in [15]