11. The main radiographic features of generalized osteoporosis are cortical thinning and increased radiolucency. 12. Negative radiographic contrast agents are air and carbon dioxide ( CO 2 ). 13. A series of different designs have been developed for radiographic " cameras ". 14. It is actually a specialized piece of radiographic film in a rugged container. 15. Radiographic evaluation of the elbow should be performed to rule out other diagnoses.16. Radiographic features in infants are generally less severe than those seen in perinatal hypophosphatasia.17. The death of bone does not alter its radiographic opacity nor its mineral density. 18. Third, radiographic evidence is non-contributory. 19. The test is usually done with radiographic uterine cavity through the vagina and cervix. 20. During World War II Van de Graaff was director of the High Voltage Radiographic Project.
