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TEST BANK FOR RADIOLOGIC SCIENCE FOR TECHN
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OLOGISTS 13TH EDITION BY BUSHONG AND SHIELDS
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,CHAPTER 1: INTRODUCTION TO RADIOLOGIC SCIENCE f g fg f g fg f g




1. Which of the following best describes the primary purpose of diagnostic ra
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diography?
A. Totreat diseases using ionizing radiation
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B. Toproduceimages of internal structures for diagnosis
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C. Tomonitor patient vital signs
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D. Tosterilize medical equipment
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Answer: B fg




Rationale: Diagnostic radiography’s main purpose is to produce images of internal bo
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dy structures, allowing physicians to detect and diagnose abnormalities. Options A,
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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 fg




B. X-ray tube fg




C. Ultrasound transducer fg




D. PET scanner fg




Answer: B fg




Rationale:The X- fg fg




ray tubegenerates ionizing radiation used in diagnostic radiography. MRI and ultr
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asound use non- fg fg




ionizing energy, while PET uses radioactive tracers rather than producing radiation
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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 fg fg fg fg fg




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




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




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




Answer: B fg




Rationale:ALARA (“As Low As Reasonably Achievable”) ensures patient and stfg fg fg fg fg fg f g fg fg fg




aff receive the minimum radiation dosenecessary for diagnostic-quality images.
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,4. A radiologic technologistis preparing to image a patient with a suspected fr
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acture. Which safety measure is most important?
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A. Using the fastest imaging speed fg fg fg fg




B. Ensuring properpatient shielding and positioning fg fg fg fg fg




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




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




Answer: B fg




Rationale:Propershielding and positioning minimize unnecessary exposure and prot
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ect radiosensitive tissues. Options A, C, and D can increase radiation risk or degrade
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image quality. fg




5. Scenario:A 45-year- fg fg




old patient expresses concern about radiation exposure. How should the technolo
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gist respond?
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A. Ignoretheir concerns;radiation is safe fg fg fg fg fg




B. Explain that doseis minimized and benefits outweigh risks
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C. Refuse to performthe exam fg fg fg fg




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




Answer: B fg




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




Rationale: The American Society of Radiologic Technologists (ASRT) sets educatio
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nal and professional standards.FDA regulates equipment, CDC focuses on infection co
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ntrol, WHO on global health.
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, 7. Which imaging modality does not use ionizing radiation?
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A. CT scan
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B. MRI
C. X-ray
D. Fluoroscopy
Answer: B fg




Rationale:MRI uses magnetic fields and radio waves, which are non-
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ionizing. CT, X-ray, and fluoroscopyall 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 marrowfg




D. Cartilage
Answer: C fg




Rationale:Bonemarrow contains rapidly dividing cells, making it highly sensitive to
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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 fg




B. Tube voltage and current
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C. Room temperature fg




D. Technologist height fg




Answer: B fg




Rationale:Tube voltage (kVp) and current (mA) controlX-
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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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