We have prepared an unique cluster, [Eu(H 2 O) 3 (a 2 -P 2 W 17 O 61 )(Eu 2 (H 2 O) 7 )] 4 4-, 1, in high yield and the preparation and crystallization is highly reproducible. This compound is based on the 1:1 [Eu (a 2 -P 2 W 17 O 61 )] 2 14cluster where Eu2 is bound in the defect of the cap region of the a 2 -P 2 W 17 O 61 . Two other Eu(III) ions, Eu1 and Eu3 are each bound to two terminal oxygen atoms in that defect cap region. These two Eu(III) ions are bound through a bridging oxygen to other [Eu (a 2 -P 2 W 17 O 61 )] 2 14clusters to form a network of [Eu (a 2 -P 2 W 17 O 61 )] 2 14dimers, each connected by two aquated Eu(III) ions. Preliminary luminescence studies of a crystalline sample of 1, suspended in methanol and reacted with organic ligands, show that the organic ligands indeed are capable of sensitizing the luminescence of the Eu(III). For comparison in solution, the organic soluble TBA 3 H[EuPW 11 O 39 ], 3, was prepared and characterized. As shown from luminescence titrations and 31 P and 1 H NMR spectroscopy, this species reacts with phenanthroline and bipyridine, in acetonitrile, to form the 2:1 organic ligand: [Eu (PW 11 O 39
Abstract:Y-90 radioembolization is an increasingly utilized treatment for both primary and metastatic malignancy in the liver. Understanding the biophysical properties, dosing concerns, and imaging appearance of this treatment is important for interventional radiologists and nuclear medicine physicians to provide important therapy. Y-90 radioembolization is efficacious and safe, although the possibility of complications does exist. This article provides a comprehensive in-depth discussion about the indications for Y-90 radioembolization, reviews the role of preprocedural angiography and MAA scans, illustrates different dosing techniques, compares and contrasts resin and glass microspheres, and confers potential complications.
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