Radiology MCQs January 8, 2026October 12, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. What imaging modality is best for visualizing soft tissues? (A) X-ray (B) MRI (C) CT (D) Ultrasound 2. Which contrast agent is commonly used in CT scans? (A) Barium (B) Iodine (C) Gadolinium (D) Carbon dioxide 3. What is the primary purpose of a radiologist? (A) Interpret imaging studies (B) Perform surgeries (C) Administer medications (D) Conduct physical examinations 4. Which of the following is a common indication for an MRI? (A) Brain tumors (B) Broken bones (C) Pneumonia (D) Gallstones 5. In radiology, what does the term “attenuation” refer to? (A) Reduction in the intensity of an X-ray beam (B) Increase in the intensity of a beam (C) Change in color of images (D) Increase in image resolution 6. Which imaging technique uses sound waves to create images? (A) X-ray (B) Ultrasound (C) MRI (D) CT 7. What is the most common use of fluoroscopy? (A) Real-time imaging of moving structures (B) Detecting fractures (C) Evaluating tumors (D) Assessing brain function 8. What type of radiation is used in X-ray imaging? (A) Alpha particles (B) Ionizing radiation (C) Beta particles (D) Non-ionizing radiation 9. Which imaging modality is most sensitive for detecting bone fractures? (A) Ultrasound (B) CT scan (C) X-ray (D) MRI 10. What is the significance of the Hounsfield unit in CT scans? (A) It measures tissue density (B) It indicates the amount of radiation (C) It determines the imaging time (D) It measures image resolution 11. Which of the following is a contraindication for MRI? (A) Claustrophobia (B) Presence of a pacemaker (C) Kidney disease (D) Allergy to iodine 12. What does a “negative” X-ray report typically indicate? (A) Abnormal findings (B) No significant abnormalities (C) The need for further imaging (D) Confirmation of a diagnosis 13. Which of the following imaging studies uses a radioactive tracer? (A) MRI (B) PET scan (C) Ultrasound (D) X-ray 14. In radiology, what does “contrast enhancement” indicate? (A) Increased visibility of structures (B) Decreased image quality (C) A need for more radiation (D) Changes in patient position 15. What is the most common indication for performing a chest X-ray? (A) Respiratory symptoms (B) Abdominal pain (C) Bone fractures (D) Headaches 16. What does the term “radiopacity” refer to? (A) Ability to block X-rays (B) Ability to transmit X-rays (C) The speed of image acquisition (D) The quality of the contrast medium 17. Which type of imaging is best for evaluating brain tumors? (A) X-ray (B) MRI (C) Ultrasound (D) CT 18. What is the primary risk associated with X-ray imaging? (A) Exposure to ionizing radiation (B) Allergic reactions (C) Contrast-related nephropathy (D) Noise pollution 19. What is the typical imaging appearance of an acute hemorrhage on CT? (A) Hypodense area (B) Hyperdense area (C) No change in density (D) Cystic appearance 20. In which condition is an ultrasound particularly useful? (A) Gallbladder disease (B) Bone fractures (C) Brain tumors (D) Lung cancer 21. What does a “ground-glass opacity” on a chest CT suggest? (A) Interstitial lung disease (B) Pneumothorax (C) Consolidation (D) Pleural effusion 22. Which imaging modality is considered the gold standard for evaluating coronary artery disease? (A) Ultrasound (B) Coronary angiography (C) CT scan (D) MRI 23. What is the main advantage of digital radiography over traditional film-based radiography? (A) Improved image storage and retrieval (B) Lower radiation dose (C) Higher image resolution (D) Reduced equipment cost 24. Which imaging technique can help assess blood flow in the heart? (A) CT (B) Cardiac MRI (C) X-ray (D) Ultrasound 25. What is the purpose of using a grid in radiography? (A) Reduce scatter radiation (B) Improve image contrast (C) Decrease exposure time (D) Enhance patient comfort 26. Which contrast agent is primarily used in MRI? (A) Iodine (B) Gadolinium (C) Barium (D) Carbon dioxide 27. What does a “spiral CT” refer to? (A) A traditional CT scan (B) A continuous rotation of the X-ray tube (C) A non-spiral CT scan (D) An MRI scan 28. What does the term “artifacts” refer to in radiology? (A) Unwanted features in images (B) Actual pathology (C) Contrast enhancement (D) Normal anatomical structures 29. Which imaging study is most useful for assessing soft tissue masses? (A) X-ray (B) MRI (C) Ultrasound (D) CT 30. In radiology, what is the significance of the “window level” setting on a CT scan? (A) Adjusting image brightness and contrast (B) Changing the radiation dose (C) Altering the imaging time (D) Modifying patient position