Real-time black-blood MRI using spatial presaturation.
A real-time interactive black-blood imaging system is described. Rapid blood suppression is achieved by exciting and dephasing slabs outside the imaging slice before each imaging excitation. Sharp-profiled radio frequency saturation pulses placed close to the imaging slice provide good blood suppression, even in views containing slow through-plane flow. In vivo results indicate that this technique improves endocardial border definition during systole in real-time cardiac wall-motion studies. Phantom and animal results indicate that this technique nearly eliminates flow artifacts in real-time intravascular studies. J. Magn. Reson. Imaging 2001;13:807-812.
Nayak
K S
KS
Magnetic Resonance Systems Research Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California 94305-9510, USA. nayak@lad.stanford.edu
Rivas
P A
PA
Pauly
J M
JM
Scott
G C
GC
Kerr
A B
AB
Hu
B S
BS
Nishimura
D G
DG
D000465:Algorithms; D000818:Animals; D016477:Artifacts; D001769:Blood; D004268:DNA-Binding Proteins; D003971:Diastole / Q000502:physiology; D004699:Endocardium / Q000473:pathology*; D005583:Fourier Analysis; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D009200:Myocardial Contraction / Q000502:physiology; D009206:Myocardium / Q000473:pathology*; D010940:Plant Proteins; D020598:Proto-Oncogene Proteins c-myb; D012680:Sensitivity and Specificity; D013599:Systole / Q000502:physiology
D004268:DNA-Binding Proteins; D010940:Plant Proteins; D020598:Proto-Oncogene Proteins c-myb