Test Bank for Radiologic Science for Technologists 13th Edition By Stewart C. Bushong, and Elizabeth Shields| 9780323765367| All Chapters| LATEST

TEST BANK FOR RADIOLOGIC SCIENCE FOR TECHN
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OLOGISTS 13TH EDITION BY BUSHONG AND SHIELD
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S |ALL CHAPTERS | QUESTIONS & 100% VERIFIED ANS
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WERS AND RATIONALES | GRADED A+
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,CHAPTER 1: INTRODUCTION TO RADIOLOGIC SCIENCE f6 f6 f 6 f6 f 6




1. Which of the following best describes the primary purpose of diagnostic r
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adiography?
A. To treat diseases using ionizing radiation
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B. To produceimages of internal structures for diagnosis
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C. To monitor patient vital signs
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D. To sterilize medical equipment
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Answer: B f6



Rationale: Diagnostic radiography’s main purpose is to produce images of internal
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body structures, allowing physicians to detect and diagnose abnormalities. Options
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A, C, and D are unrelated to diagnostic imaging.
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2. What is the primary source ofionizing radiation in medical imaging?
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A. MRI scanner f6



B. X-ray tube f6



C. Ultrasound transducer f6



D. PET scanner f6




Answer: B f6



Rationale: The X- 6f f6



ray tube generates ionizing radiation used in diagnostic radiography. MRI and u
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ltrasound use non- f6 f6



ionizing energy, while PET uses radioactive tracers rather than producing radiati
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on in a tube.
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3. How does the ALARA principle guide radiologic practice?
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A. Maximizing image quality regardless of dose f6 f6 f6 f6 f6



B. Minimizing radiation exposure while achieving diagnostic quality f6 f6 f6 f6 f6 f6



C. Limiting patient interaction to reduce infection f6 f6 f6 f6 f6



D. Increasing exposure time for better penetration f6 f6 f6 f6 f6




Answer: B f6



Rationale: ALARA (“As Low As Reasonably Achievable”) ensures patient and s
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taff receive the minimum radiation dosenecessary for diagnostic-quality images.
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,4. A radiologic technologist is preparing to image a patient with a suspected f
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racture. Which safety measure is most important?
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A. Using the fastest imaging speed
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B. Ensuring properpatient shielding and positioningf6 6f f6 f6 f6



C. Increasing exposure to reduce repeat images f6 f6 f6 f6 f6



D. Allowing the patient to move during imaging f6 f6 f6 f6 f6 f6




Answer: B f6



Rationale: Propershielding and positioning minimize unnecessary exposure and pr
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otect radiosensitive tissues. Options A, C, and D can increase radiation risk or degr
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ade image quality.
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5. Scenario:A 45-year- 6f f6



old patient expresses concern about radiation exposure. How should the techno
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logist respond?f6



A. Ignore their concerns; radiation is safe
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B. Explain that doseis minimized and benefits outweigh risks
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C. Refuse to perform the exam f6 f6 f6 f6



D. Increase exposure to ensure better images f6 f6 f6 f6 f6




Answer: B f6



Rationale: Patients should be informed about the low doseand the diagnostic bene
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fits, reducing anxiety and promoting informed consent.
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6. Which professional organization establishes standards for radiologic
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technologists?
A. WHO
B. ASRT
C. FDA
D. CDC
Answer: B f6



Rationale: The American Society of Radiologic Technologists (ASRT) sets educati
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onal and professional standards. FDA regulates equipment, CDC focuses on infection
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control, WHO on global health.
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, 7. Which imaging modality does not use ionizing radiation?
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A. CT scan f6



B. MRI
C. X-ray
D. Fluoroscopy
Answer: B f6



Rationale: MRI uses magnetic fields and radio waves, which are non-
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ionizing. CT, X-ray, and fluoroscopy all use ionizing radiation.
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8. What is the most radiosensitive tissue in the human body?
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A. Muscle
B. Skin
C. Bone marrow f6



D. Cartilage
Answer: C f6



Rationale: Bone marrow contains rapidly dividing cells, making it highly sensitive t
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o ionizing radiation. Muscle, skin, and cartilage are less sensitive.
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9. Which factor primarily affects the quality of an X-ray image?
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A. Patient diet f6



B. Tube voltage and current
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C. Room temperature f6



D. Technologist height f6




Answer: B f6



Rationale: Tube voltage (kVp) and current (mA) control X-
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ray energy and photon quantity, directly affecting image quality.
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10. How often should radiologic equipment be tested for quality assurance?
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A. Daily
B. Monthly
C. Annually
D. Only when malfunction occurs
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