MR ventriculocisternography by using 3D balanced steady-state free precession imaging: technical note.
This study investigated the effects of flip angle setting in 3D balanced steady-state free precession (SSFP) imaging on CSF-parenchyma contrast and section aliasing artifacts. Theoretical derivations indicated that the extent of section aliasing artifacts decreased as the flip angle was lowered, at the expense of a sacrifice in CSF-parenchyma contrast. Experimental data agreed closely with theoretical predictions. A flip angle of about 40 degrees is therefore recommended for 3D balanced SSFP MR ventriculocisternography.
Wu
Ming-Long
ML
Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, Republic of China.
Ko
Cheng-Wen
CW
Chen
Ting-Yi
TY
Wu
Ming-Ting
MT
Chung
Hsiao-Wen
HW
Huang
Teng-Yi
TY
Lin
Yi-Ru
YR
D016477:Artifacts; D014695:Cerebral Ventriculography / Q000379:methods*; D002555:Cerebrospinal Fluid; D006801:Humans; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging