@inproceedings{inproceedings968e1865, title = {Quality assurance in mammography: a new instrument for operational characteristics and focal spot sizes measurements}, author = {Curi, Newton S and Slaets, Annie France Frère and Schiabel, Homero and Oliveira, Henrique J Q and Marques, Márcio A}, year = {1998}, publisher = {SPIE}, booktitle = {Medical Imaging 1998 - Physics of Medical Imaging} }