Timothy J Walker, Derek W Craig, Christopher D Pfledderer, Michael C Robertson, Paula Cuccaro, Keisey Fumero, John B Bartholomew
Observed and perceived benefits of providing physical activity opportunities in elementary schools: a qualitative study
Frontiers in sports and active living
benefits diagnostic imaging immense revolutionized practice medicine increased sophistication clinical efficacy imaging resulted dramatic growth past quarter century although data derived atomic bomb survivors japan events suggest expanding use imaging modalities using ionizing radiation may eventually result increased incidence cancer exposed population problem likely minimized preventing inappropriate use imaging optimizing studies performed obtain best image quality lowest radiation dose acr advocate radiation safety since inception 1924 convened acr blue ribbon panel radiation dose medicine address issues white paper details proposed action plan college derived deliberations panel