In vivo detection limits of magnetically labeled embryonic stem cells in the rat brain using high-field (17.6 T) magnetic resonance imaging. - Albrecht Stroh; Cornelius Faber; Thomas Neuberger; Peer Lorenz; Katharina Sieland; Peter M. Jakob; Andrew Webb; Herbert Pilgrimm; Ralf Schober; Elena E. Pohl; Claus Zimmer (NeuroImage, 2005)