What is the overall case fatality rate of lung cancer in the United States (men and women combined)?

A patient requires a trauma AP axial cranial projection (Caldwell method). When the central ray is aligned with the OML, the tube angle reads 13 degrees caudad. What central ray angle should be used?

a. 15 degrees caudad b. 2 degrees caudad c. 2 degrees cephalad d. 28 degrees caudad

When many radiographic factors are acting upon one other, it is known as

a. a pyramid problem. b. a professional problem. c. procedural problem. d. an ethical problem.