Patent ID: 7655157

Claim:
An x-ray detector comprising: a doped cadmium tungstate according to the formula: Cd (1−(x+y)) A x B y WO 4 where: A is a monovalent metal ion selected from the group consisting of Li, K, Rb, Cs, Ag, Tl, and combinations thereof; B is a trivalent metal ion selected from the group consisting of Bi, Y, La, Ce, Pr, Nd, Pm, Sm, Tb, Dy, Ho, Er, Tm, Yb, Lu, and combinations thereof; X ranges from 0 to about 0.01; Y ranges from 0 to about 0.01; and at least one of X or Y is non-zero; and a photodetector disposed to detect light emitted by said scintillator composition.