Aluminium hydroxide stabilised MnFe2O4 and Fe3O4 nanoparticles as dual-modality contrasts agent for MRI and PET imaging.

Authors thank Drs Alice Warley and Gama Vizcay, at Centre for Ultrastructural Imaging, King's College London for TEM, and Mr Andrew Cakebread at King's College for ICP-MS measurements. RTMR and DM would like to thank EU COST action TD1007 on PET-MRI. The help of László Papp, Sándor Hóbor and Gábor Németh from Mediso is kindly acknowledged. This research was supported by the Centre of Excellence in Medical Engineering funded by the Wellcome Trust and EPSRC under grant number WT088641/Z/09/Z, and the King's College London and UCL Comprehensive Cancer Imaging Centre funded by the CRUK (C1519/A10331) and EPSRC in association with the MRC and DoH (WT088641/Z/09/Z) (England), and by the National Institute for Health Research Biomedical Research Centre at Guy's and St Thomas' NHS Foundation Trust and King's College London. PET and SPECT scanning equipment at KCL was funded by an equipment grant from the Wellcome Trust. The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health.