| abstract |
A high resolution radiography system is presented utilizing an intensifying screen incorporating a UV emitting phosphor. The photographic element exhibits enhanced sensitivity to the emission of the phosphor and further comprises at least one compound selected from the group comprising formula (I) wherein R1 = substituted or unsubstituted aromatic ring; R2 = H, substituted or unsubstituted alkyl or substituted or unsubstituted aryl; R3 = an alkyl group, an aryl group, a COOR group wherein R is hydrogen, alkyl, aryl or an alkali metal cation, HNR4+ wherein R4 is alkyl, substituted alkyl or alkylaryl. |