Chapter 1 of Bontrager Textbook of Radiolographic Positioning (Self-test) Part D

Chapter 1 of Bontrager Textbook of Radiolographic Positioning (Self-test) Part D Questions and Answers in Radiography 1. Which one of the following is not one of the four primary image quality factors? ️ C. Kilovoltage (kV) 2. The amount of blackness on a processed radiograph is called: ️ A. Density 3. Which of the following exposure factors primarily controls radiographic density? ️ B. mAs 4. True/False: For an underexposed radiograph, the mAs must be increased by a factor of four to produce a visible change in radiographic density. ️ False 5. Situation: A radiograph of the knee reveals that it is overexposed and must be repeated. The original technique used 10 mAs. Which one of the following changes will improve the image during the repeat exposure? ️ B. Decrease to 5 mAs 6. The primary controlling factor for radiographic contrast is: ️ B. kV 7. Situation: Chest radiography requires long-scale contrast. Which set of exposure factors will produce this? ️ C. 110 kV, 2 mAs 8. Which one of the following sets of exposure factors will produce the highest (short-scale) radiographic contrast? ️ A. 60 kV, 30 mAs 9. True/False: Kilovoltage is a secondary controlling factor for radiographic density. ️ True 10. True/False: A low-kilovoltage technique (50 kV) produces a long-scale contrast image. ️ False 11. Situation: A radiograph of the elbow reveals that it is overexposed. The technologist wants to adjust kV rather than mAs for the repeat exposure. This is contrary to common practice. The original analog exposure factors were 70 kV and 5 mAs. Which one of the following kV settings would reduce radiographic density by one-half? ️ C. 60 kV and 5 mAs 12. Which one of the following techniques or devices will reduce the amount of scatter radiation striking the IR? ️ D. All of the above 13. True/False: Recorded detail or spatial resolution is optimal with a long object receptor distance (OID) and a short SID. ️ False 14. Which one of the following factors best controls involuntary cardiac motion artifact? ️ D. Shortening the exposure time 15. Situation: The technologist is asked to produce a high-quality image of the carpal (wrist) bones. The emergency room physician suspects that the patient has a very small fracture of one of the bones. Which one of the following sets of technical factors will produce an image with the highest degree of radiographic resolution? ️ D. 0.3 mm focal spot and 40 inch SID 16. Rather than rely on the anode heel effect, what can be used to equalize density of specific anatomy? ️ B. Compensating filter 17. Which type of compensating filter is recommended for an AP projection of the shoulder? ️ B. Boomerang 18. Which type of compensating filter is recommended for an axiolateral hip projection?