Felix Schwab1,
Bram Stieltjes2, Frederik Bernd Laun3
1Medical Physics in Radiology, Deutsches
Krebsforschungszentrum , Heidelberg, Baden Wrttemberg, Germany; 2Radiology,
Deutsches Krebsforschungszentrum, Heidelberg, Germany; 3Medical
Physics in Radiology, Deutsches Krebsforschungszentrum, Heidelberg, Baden
Wrttemberg, Germany
The
diffusion weighted imaging of the spinal chord is often impeded by metal
implants. A quantitative analysis of these effects is performed on a standard
titanium implant using phase maps acquired from FLASH sequences and ADC maps
acquired from diffusion weighted EPI sequences. The shift δb/b is
calculated as a measure of the error. Artefacts caused by the separate parts
of the implant are mostly benign and thus diffusion measurements should be
feasible if a small distance to the implant is observed.
Keywords