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Abstract #1642

Validation of Diffusion Tensor Imaging in the Presence of Metal Implants

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.