Improved data reconstruction method for GRAPPA

被引:96
作者
Wang, Z
Wang, JJ
Detre, JA
机构
[1] Univ Penn, Sch Med, Ctr Funct Imaging, Philadelphia, PA 19104 USA
[2] Univ Penn, Sch Med, Dept Neurol, Philadelphia, PA 19104 USA
[3] Univ Penn, Sch Med, Dept Radiol, Philadelphia, PA 19104 USA
关键词
partially parallel imaging; GRAPPA; MRI; data reconstruction; auto calibrating;
D O I
10.1002/mrm.20601
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
This paper presents an improved data reconstruction method for generalized autocalibrating partially parallel acquisitions (GRAPPA) using multicolumn multiline interpolation (MCMLI). Both nearest acquired line (k(y)) neighboring points and column (k(x)) neighboring points from all components of an array coil were used to reconstruct each missing datum through interpolation. A new fitting scheme was designed to estimate the interpolation weights. Both simulations and in vivo experiments demonstrated that the proposed method yields higher-quality data reconstruction than the original GRAPPA method, especially with high acceleration factors.
引用
收藏
页码:738 / 742
页数:5
相关论文
共 12 条
[1]   Generalized Autocalibrating Partially Parallel Acquisitions (GRAPPA) [J].
Griswold, MA ;
Jakob, PM ;
Heidemann, RM ;
Nittka, M ;
Jellus, V ;
Wang, JM ;
Kiefer, B ;
Haase, A .
MAGNETIC RESONANCE IN MEDICINE, 2002, 47 (06) :1202-1210
[2]   VD-AUTO-SMASH imaging [J].
Heidemann, RM ;
Griswold, MA ;
Haase, A ;
Jakob, PM .
MAGNETIC RESONANCE IN MEDICINE, 2001, 45 (06) :1066-1074
[3]  
HUANG F, 2004, P 12 ANN M ISMRM KYO, P2139
[4]  
Jakob PM, 1998, MAGN RESON MATER PHY, V7, P42
[5]  
Oppenheim AV, 1975, DIGITAL SIGNAL PROCE
[6]   Artifact and noise suppression in GRAPPA imaging using improved k-space coil calibration and variable density sampling [J].
Park, J ;
Zhang, Q ;
Jellus, V ;
Simonetti, O ;
Li, DB .
MAGNETIC RESONANCE IN MEDICINE, 2005, 53 (01) :186-193
[7]   Feasibility and performance of breath-hold 3D TRUE-FISP coronary MRA using self-calibrating parallel acquisition [J].
Park, J ;
McCarthy, R ;
Li, DB .
MAGNETIC RESONANCE IN MEDICINE, 2004, 52 (01) :7-13
[8]   THE NMR PHASED-ARRAY [J].
ROEMER, PB ;
EDELSTEIN, WA ;
HAYES, CE ;
SOUZA, SP ;
MUELLER, OM .
MAGNETIC RESONANCE IN MEDICINE, 1990, 16 (02) :192-225
[9]   Simultaneous acquisition of spatial harmonics (SMASH): Fast imaging with radiofrequency coil arrays [J].
Sodickson, DK ;
Manning, WJ .
MAGNETIC RESONANCE IN MEDICINE, 1997, 38 (04) :591-603
[10]   Continuous ASL (CASL) perfusion MRI with an array coil and parallel imaging at 3T [J].
Wang, Z ;
Wang, JJ ;
Connick, TJ ;
Wetmore, GS ;
Detre, JA .
MAGNETIC RESONANCE IN MEDICINE, 2005, 54 (03) :732-737