Bushong Radiologic Science for Technologists 13th Edition Test Bank – All Chapters Q&A

Complete test bank for Bushong’s Radiologic Science for Technologists, 13th Edition by Shields. Features chapter-by-chapter questions with detailed answers and rationales covering diagnostic radiography, radiation safety, imaging physics, CT, MRI, ultrasound, digital imaging, radiobiology, quality control, and patient care. Ideal for exam preparation and review. TEST BANK BUSHONG’S RADIOLOGIC SCIENCE FOR TECHNOLOGISTS 13TH EDITION BY AND SHIELDS ALL CHAPTERS INCLUSIVE QUESTIONS WITH ANSWERS Test Bank For Bushong’s Radiologic Science For Technologists 13th Edition All Chapters Inclusive Questions With Answers CHAPTER 1: INTRODUCTION TO RADIOLOGIC SCIENCE 1. Which of the following best describes the primary purpose of diagnostic radiography? A. To treat diseases using ionizing radiation B. To produce images of internal structures for diagnosis C. To monitor patient vital signs D. To sterilize medical equipment Answer: B Rationale: Diagnostic radiography’s main purpose is to produce images of internal body structures, allowing physicians to detect and diagnose abnormalities. Options A, C, and D are unrelated to diagnostic imaging. 2. What is the primary source of ionizing radiation in medical imaging? A. MRI scanner B. X-ray tube C. Ultrasound transducer D. PET scanner Answer: B Rationale: The X-ray tube generates ionizing radiation used in diagnostic radiography. MRI and ultrasound use non-ionizing energy, while PET uses radioactive tracers rather than producing radiation in a tube. 3. How does the ALARA principle guide radiologic practice? A. Maximizing image quality regardless of dose B. Minimizing radiation exposure while achieving diagnostic quality C. Limiting patient interaction to reduce infection D. Increasing exposure time for better penetration Answer: B Rationale: ALARA (“As Low As Reasonably Achievable”) ensures patient and staff receive the minimum radiation dose necessary for diagnostic-quality images. 4. A radiologic technologist is preparing to image a patient with a suspected fracture. Which safety measure is most important? A. Using the fastest imaging speed B. Ensuring proper patient shielding and positioning C. Increasing exposure to reduce repeat images D. Allowing the patient to move during imaging Answer: B Rationale: Proper shielding and positioning minimize unnecessary exposure and protect radiosensitive tissues. Options A, C, and D can increase radiation risk or degrade image quality. 5. Scenario: A 45-year-old patient expresses concern about radiation exposure. How should the technologist respond? A. Ignore their concerns; radiation is safe B. Explain that dose is minimized and benefits outweigh risks C. Refuse to perform the exam D. Increase exposure to ensure better images Answer: B Rationale: Patients should be informed about the low dose and the diagnostic benefits, reducing anxiety and promoting informed consent. 6. Which professional organization establishes standards for radiologic technologists? A. WHO B. ASRT C. FDA D. CDC Answer: B Rationale: The American Society of Radiologic Technologists (ASRT) sets educational and professional standards. FDA regulates equipment, CDC focuses on infection control, WHO on global health. 7. Which imaging modality does not use ionizing radiation? A. CT scan B. MRI C. X-ray D. Fluoroscopy Answer: B Rationale: MRI uses magnetic fields and radio waves, which are non-ionizing. CT, X-ray, and fluoroscopy all use ionizing radiation. 8. What is the most radiosensitive tissue in the human body? A. Muscle B. Skin C. Bone marrow D. Cartilage Answer: C Rationale: Bone marrow contains rapidly dividing cells, making it highly sensitive to ionizing radiation. Muscle, skin, and cartilage are less sensitive. 9. Which factor primarily affects the quality of an X-ray image? A. Patient diet B. Tube voltage and current C. Room temperature D. Technologist height Answer: B Rationale: Tube voltage (kVp) and current (mA) control X-ray energy and photon quantity, directly affecting image quality. 10. How often should radiologic equipment be tested for quality assurance? A. Daily B. Monthly C. Annually D. Only when malfunction occurs Answer: B Rationale: Routine quality assurance, typically monthly, ensures safe, high-quality imaging and detects early equipment issues. 11. Which term describes the ability of an imaging system to distinguish small structures? A. Contrast resolution B. Spatial resolution C. Brightness D. Noise Answer: B Rationale: Spatial resolution refers to the system’s ability to clearly depict small structures, while contrast resolution relates to shades of gray. 12. What is the purpose of a radiographic grid? A. Reduce patient motion B. Improve contrast by absorbing scatter radiation C. Increase exposure D. Protect the X-ray tube Answer: B Rationale: Grids absorb scattered photons, improving image contrast. They do not reduce motion or protect equipment. 13. Scenario: A patient has undergone multiple CT scans. Which principle should guide further imaging? A. Repeat scans routinely B. Use ALARA and evaluate necessity C. Ignore cumulative dose D. Avoid shielding Answer: B Rationale: ALARA and justification of each exposure are critical to minimizing cumulative radiation dose. 14. Which type of radiation has the highest penetrating ability? A. Alpha particles B. Beta particles C. Gamma rays D. Ultraviolet rays Answer: C Rationale: Gamma rays and X-rays are highly penetrating ionizing radiation, whereas alpha and beta particles have limited penetration. 15. The inverse square law states that radiation intensity: A. Increases with distance squared B. Decreases with the square of the distance C. Is independent of distance D. Doubles every meter Answer: B Rationale: Radiation intensity decreases proportionally to the square of the distance from the source, emphasizing the importance of distance in protection. 16. Which device is used to monitor occupational radiation exposure? A. Lead apron B. Dosimeter C. MRI coil D. Fluoroscope Answer: B Rationale: Dosimeters track cumulative exposure for radiation workers. Lead aprons shield but do not record exposure. 17. Which principle is central to patient positioning in radiography? A. Comfort only B. Image clarity, patient safety, and reproducibility