Abstract #3641
In-Vivo Fully Phase-Encoded Magnetic Resonance Imaging in the Presence of Metal using Multiband RF Excitation
Nathan S Artz 1,2 , Curtis N Wiens 1 , Matthew R Smith 1 , Diego Hernando 1 , Alexey Samsonov 1 , and Scott B Reeder 1,3
1
Department of Radiology, University of
Wisconsin, Madison, WI, United States,
2
Department
of Radiological Sciences, Saint Jude Children's Research
Hospital, Memphis, TN, United States,
3
Department
of Medical Physics, University of Wisconsin, Madison,
WI, United States
A spectrally-resolved, fully phase-encoded (SR-FPE) 3D
FSE technique can avoid artifacts near metal due to
frequency-encoding, but long scan times have limited
work to phantoms. The purpose of this work was to
translate SR-FPE to the in-vivo setting using multiband
RF excitation to accelerate imaging. In a volunteer with
a total knee replacement, an interleaved tri-band SR-FPE
approach successfully acquired six RF offsets in
13:19min. In a volunteer with the head of a hip
prosthesis placed posterior to the knee, 24 RF offsets
were acquired in 34:38min. This work demonstrates the
feasibility of in-vivo, multiband SR-FPE near metallic
implants.
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