“…Lipiodol has been labelled with iodine-131 (Liebster and Kocandrle, 1964;Raoul et al, 1986), rhenium-188 (Lepareur et al, 2008), yttrium-90 (Wang et al, 1996b;Yu et al, 2003), and radiolanthanides (Das et al, 2009;Subramanian et al, 2010). Yttrium-90 (pure beta-emitter, E β max ¼2.27 MeV, t 1/2 ¼64 h, max tissue penetration¼ 12 mm) has ideal properties for targeted radiotherapy, and has found wide use in peptide receptor radionuclide therapy (Goffredo et al, 2011), radioimmunotherapy (Sharkey et al, 2010) and radioembolisation (Salem and Hunter, 2006). It has been suggested as a suitable isotope to label Lipiodol as it should lead to a significantly reduced whole-body dose compared to 131 I-Lipiodol, since more than 90% of this dose is due to the emitted gamma rays (respectively Contents lists available at ScienceDirect journal homepage: www.elsevier.com/locate/apradiso 0.02 rad/mCi compared to 1.9 rad/mCi, based on estimated dosimetry) (Madsen et al, 1988).…”