ARRT Domain 5: Equipment Operation and Quality Assurance Welcome to your ARRT Domain 5: Equipment Operation and Quality Assurance 1. ARRT: Equipment Operation and Quality Assurance What is the purpose of the automatic exposure control 'AEC' in radiographic imaging? A. To enhance the contrast of the image B. To automatically select the appropriate exposure time C. To adjust the patient positioning D. To increase the spatial resolution None 2. ARRT: Equipment Operation and Quality Assurance In digital radiography, what is the primary function of a grid? A. To increase the dose to the patient B. To reduce scatter radiation reaching the image receptor C. To enhance the digital image resolution D. To convert the X-ray photons to light None 3. ARRT: Equipment Operation and Quality Assurance Which of the following factors does NOT affect the spatial resolution in digital imaging? A. Pixel size B. Focal spot size C. Patient movement D. Type of radiation used None 4. ARRT: Equipment Operation and Quality Assurance What is the purpose of collimation in radiographic imaging? A. To increase the field of view B. To reduce patient radiation dose C. To enhance the image brightness D. To increase the exposure time None 5. ARRT: Equipment Operation and Quality Assurance How does the inverse square law relate to radiation exposure in radiography? A. Exposure increases linearly with distance B. Exposure decreases as the square of the distance increases C. Exposure is independent of distance D. Exposure decreases linearly with distance None 6. ARRT: Equipment Operation and Quality Assurance What is the primary reason for using a high kVp in thoracic imaging? A. To reduce patient dose B. To increase image contrast C. To decrease exposure time D. To enhance image detail None 7. ARRT: Equipment Operation and Quality Assurance In fluoroscopy, what is the main purpose of using a pulsed beam instead of a continuous beam? A. To increase image resolution B. To reduce patient dose C. To enhance image brightness D. To increase the field of view None 8. ARRT: Equipment Operation and Quality Assurance Which component in the X-ray tube is responsible for producing X-rays? A. The anode B. The cathode C. The filament D. The glass envelope None 9. ARRT: Equipment Operation and Quality Assurance What is the primary function of the heel effect in X-ray production? A. To increase the intensity of the X-rays on the anode side B. To decrease the intensity of the X-rays on the cathode side C. To provide uniform intensity across the X-ray beam D. To reduce the intensity of the X-rays on the anode side None 10. ARRT: Equipment Operation and Quality Assurance Why is it important to use the correct source-to-image distance 'SID' in radiography? A. To ensure proper patient positioning B. To reduce geometric distortion C. To increase image magnification D. To enhance the image detail None 11. ARRT: Equipment Operation and Quality Assurance What role does the kVp play in determining the contrast of a radiographic image? A. Higher kVp increases contrast B. Lower kVp increases contrast C. kVp has no effect on contrast D. kVp only affects image brightness None 12. ARRT: Equipment Operation and Quality Assurance In radiography, what is the significance of using a compensating filter? A. To balance the exposure across an unevenly attenuated body part B. To increase the overall exposure C. To reduce the spatial resolution D. To enhance the contrast of the image None 13. ARRT: Equipment Operation and Quality Assurance What is the function of the anode heel effect in the context of the X-ray beam's intensity distribution? A. To increase the intensity at the periphery of the beam B. To equalize the intensity throughout the beam C. To decrease the intensity toward the anode side D. To focus the beam more intensely at the center None 14. ARRT: Equipment Operation and Quality Assurance In the context of radiation protection, what is the primary purpose of the lead apron? A. To increase the contrast of the radiographic image B. To protect patients from direct beam exposure C. To shield radiographers from scatter radiation D. To absorb heat generated by the X-ray tube None 15. ARRT: Equipment Operation and Quality Assurance Which of the following describes the principle of line focus in X-ray tube design? A. It increases the size of the focal spot for greater heat capacity. B. It decreases the effective angle of the anode to enhance image sharpness. C. It allows for a larger actual focal spot while maintaining a small effective focal spot. D. It focuses the electron beam directly onto the center of the anode. None 16. ARRT: Equipment Operation and Quality Assurance What is the primary reason for performing a quality assurance test on radiographic equipment? A. To comply with manufacturer warranties B. To ensure consistent image quality and patient safety C. To reduce the cost of equipment maintenance D. To increase the speed of image production None 17. ARRT: Equipment Operation and Quality Assurance In digital radiography, what is the impact of pixel bit depth on image quality? A. It affects the size of the image file. B. It determines the number of shades of gray in the image. C. It increases the radiation dose to the patient. D. It changes the physical size of the pixel. None 18. ARRT: Equipment Operation and Quality Assurance Why is it essential to calibrate the automatic exposure control 'AEC' system regularly? A. To adjust the color balance of the images B. To ensure accurate exposure settings and patient safety C. To reduce the processing time of images D. To increase the focal spot size for better resolution None 19. ARRT: Equipment Operation and Quality Assurance What role does the focal spot size play in image clarity in radiography? A. A larger focal spot size increases image clarity. B. Focal spot size does not affect image clarity. C. A smaller focal spot size enhances image clarity. D. A smaller focal spot size decreases image clarity. None 20. ARRT: Equipment Operation and Quality Assurance How does increasing the SID (source-to-image distance) affect the radiographic image quality? A. Increases image magnification B. Reduces image magnification and distortion C. Decreases image resolution D. Has no effect on image quality None 1 out of 20 Time is Up! Time's up
