For an AP projection of the ribs above the diaphragm, which…

For an AP projection of the ribs above the diaphragm, which of the following statements is true?1.) The top of the cassette is placed 1 to 2 inches above the shoulders2.) The shoulders are relaxed, and the scapulae are flat against the table3.) The central ray is directed to T7.4.) Exposure is performed on full expiration to depress the diaphragm.

Which of the following sets of factors will exhibit the best…

Which of the following sets of factors will exhibit the best spatial resolution of the carpal bones?1.     2 mAs, 50 kV, large focal spot size, long OID2.     4 mAs, 50 kV, large focal spot size, short SID3.     8 mAs, 50 kV, small focal spot size, short OID