TY - RPRT TI - Gradient echo acquisition for superparamagnetic particles with positive contrast (GRASP): sequence characterization in membrane and glass superparamagnetic iron oxide phantoms at 1.5T and 3T. AU - Venkatesh Mani AU - Karen C Briley-Saebo AU - Vitalii V Itskovich AU - Daniel D Samber AU - Zahi A Fayad PY - 2006 DO - 10.1002/mrm.20739 UR - https://pubmed.ncbi.nlm.nih.gov/16342148/ ID - 16342148 ER -