Meeting Banner
Abstract #2453

A Modified Variable Fip Angle Using a Predefiend Slice Profile in a Consecutive Interleaved EPI

MAGNA25Dae-Hun Kang1, Jun-Young Chung1, Da-Eun Kim1, Young-Bo Kim1, Zang-Hee Cho1

1Neuroscience Research Institute, Gachon University of Medicine and Science, Incheon, Korea, Republic of

We re-calculated a VFA considering a predefined slice excitation profile without changing RF excitation pulse by a computer simulation. By applying a modified VFA to consecutive interleaved multi-shot EPI (ciEPI) schemes, a intersegment magnitude variation was reduced and a SNR of images was improved.

Keywords

acquisition acquisitions activity applied artifact artifacts assumed bandwidth basic becomes believe better brain calculation changing common comp completely computer condition considered considering constant correction decreased defined delay derived determining directly dotted duration effective energies energy enough equalize equation establishing every excitation field filter find followings foundation free frequency function funded gain ghost gradually graph hand ideal identical improvement improving induce insufficient introduced last longitudinal magnetization magnetizations magnitude magnitudes maintain matrix maximize meters minimal ministry minor modified nevertheless noise notes numb ones paper partial plotted portion predefined problematical product profile profiles proposed prov pseudo pulse pulses rapid recovery rectangular reducing reduction resolution respect root samples scheme schemes science segments shape shorter shot shots simply simulation since slice solution solutions steady still subsequent support supported table tend theory thick transverse types typical uniform upward validate variable variations various vial white yielded yields young