A fast spin echo technique with circular sampling.
This paper presents a fast spin echo (FSE) imaging method that employs circular sampling of k-space. The technique has been implemented on a 2 Tesla imaging system and validated on both phantoms and living animals. Experimental studies have shown that circular sampling can produce artifact-free FSE images without the need of phase correction. Although not fully explored, preliminary results also show that circular sampling may have advantages over the conventional rectilinear FSE in signal-to-noise ratio and imaging efficiency. A major disadvantage is the increased sensitivity to off-resonance effects. The authors expect that the FSE technique with circular sampling will find its applications in magnetic resonance microscopy, neuro-functional imaging, and real-time dynamic studies.
Zhou
X
X
Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA.
Liang
Z P
ZP
Gewalt
S L
SL
Cofer
G P
GP
Lauterbur
P C
PC
Johnson
G A
GA
D000818:Animals; D001921:Brain / Q000033:anatomy & histology*; D017352:Echo-Planar Imaging / Q000295:instrumentation / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D008962:Models, Theoretical; D019047:Phantoms, Imaging; D051381:Rats; D012680:Sensitivity and Specificity