Tom Wilkinson1,2, Felipe Godinez1,2, Yannick Brackenier1,2, Raphael Tomi-Tricot1,2,3, Lucilio Cordero-Grande1,2,4, Philippa Bridgen1,2, Sharon Giles1,2, Joseph V Hajnal1,2, and Shaihan J Malik1,2
1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, Kings College London, London, United Kingdom, 2Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, Kings College London, London, United Kingdom, 3MR Research Collaborations, Siemens Healthcare Limited, Frimley, United Kingdom, 4Biomedical Image Technologies, ETSI Telecomunicación, Universidad Politécnica de Madrid and CIBER-BNN, Madrid, Spain
1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, Kings College London, London, United Kingdom, 2Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, Kings College London, London, United Kingdom, 3MR Research Collaborations, Siemens Healthcare Limited, Frimley, United Kingdom, 4Biomedical Image Technologies, ETSI Telecomunicación, Universidad Politécnica de Madrid and CIBER-BNN, Madrid, Spain
A ‘pilot-tone’ for 7T head MRI was constructed by broadcasting RF into the scanner room during data acquisition. This signal was shown to enable motion estimation, subsequently these estimates were compared with others obtained from DISORDER joint motion estimation & reconstruction method.
Figure 2: Hybrid k-space (left) containging pilot-tone signal and amplitude (middle) and phase (right) traces with motion encoded in each coil. Each color line is a channel. The data shown is from the DISORDER set.
Figure 5: DISORDER reconstructed images. Top row: Un-corrected; Middle row: Pilot-tone motion corrected; Bottom row: Pilot-tone motion corrected + corrected for pose-dependent fields.
