Imaging near metal with a MAVRIC-SEMAC hybrid.
The recently developed multi-acquisition with variable resonance image combination (MAVRIC) and slice-encoding metal artifact correction (SEMAC) techniques can significantly reduce image artifacts commonly encountered near embedded metal hardware. These artifact reductions are enabled by applying alternative spectral and spatial-encoding schemes to conventional spin-echo imaging techniques. Here, the MAVRIC and SEMAC concepts are connected and discussed. The development of a hybrid technique that utilizes strengths of both methods is then introduced. The presented technique is shown capable of producing minimal artifact, high-resolution images near total joint replacements in a clinical setting.
Koch
K M
KM
Applied Science Laboratory, GE Healthcare, Waukesha, Wisconsin 53188, USA. kevin.koch@ge.com
Brau
A C
AC
Chen
W
W
Gold
G E
GE
Hargreaves
B A
BA
Koff
M
M
McKinnon
G C
GC
Potter
H G
HG
King
K F
KF
D000465:Algorithms; D016477:Artifacts; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008670:Metals; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted
D008670:Metals