Meeting Banner
Abstract #2500

Expansion of the GESFIDE Sequence for Simultaneous SWI, T1W Imaging and MR Angiography

Wei Feng1, Yang Xuan1, Ewart Mark Haacke1

1Radiology, Wayne State University, Detroit, MI, United States

Gradient echo sampling of FID and echo (GESFIDE) and its variants have been studied to quantify tissue relaxation rates, including R2, R2* and R2. In this abstract, we expand this sequence to also achieve susceptibility weighted imaging (SWI), T1W imaging, and MR angiography. Gradient echoes are placed before the refocusing pulse, after the refocusing pulse and even after the spin echo. A carefully selected flip angle, echo time and repetition time allow the unwrapping of multiecho phase images to generate improved SWI images. Furthermore, good T1 contrast can be achieved at short GRE echoes while MRA can be obtained at the spin echo.

Abstract PDF Poster PDF

Keywords

abstract accurately achieve achieved acquisition advantage aligned although among angiography anisotropic applications approved array arteries audience averaging bandwidth basis benefit bipolar board bone campus catalytic channel chosen clinical clinicians coil compromise consent considerably contrast contribution cross density easily echoes encoding equipped evaluate excitation expand expansion extended facilitates fast flexibility flow furthermore generate generated good gradient gray great head illustrate improved induced informed institutional intensity interface interleaved irreversible journal last limitation local long macro mapping maps mark mineral minutes mitigate mostly nominal note parallel partial participated partition perfectly pixel planar played potentially procedures processing projection properties providing published pulse quantify radiology rapid reduce refocused refocusing registered removed removing repetition researchers resolution reversible review sampling scanner scheme seeking separately series short simulated simultaneous slice slices slow space spacing spin stark steady strategies studied susceptibility takes target tissue transverse unwrapped unwrapping utilizing variants various venous visible volunteer white whose wraps yang