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LRA 226 Week 3 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What error may occur if the patient is rotated during an AP pelvis projection?✔✔The iliac wings and obturator foramen will appear asymmetrical.
What does mAs control in x-ray exposure?✔✔The quantity of x-ray photons produced.
Why is a left lateral decubitus position used for an abdominal x-ray?✔✔To detect free intraperitoneal air and fluid levels.
What is the effect of motion on radiographic image quality?✔✔It causes blurring and loss of detail.
What part of the femur must be included on a hip radiograph?✔✔The proximal third of the femur, including the greater and lesser trochanters.
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What is the benefit of using a grid in radiography?✔✔To reduce scatter radiation and improve image contrast.
What is the primary purpose of collimation in radiography?✔✔To limit the size of the x-ray beam and reduce patient exposure.
Why is proper patient positioning crucial in radiographic imaging?✔✔To ensure accurate representation of anatomy and reduce the need for repeat exposures.
What is the function of the anode in the x-ray tube?✔✔To serve as the positive electrode where x-rays are produced.
What anatomical landmark is used to center for a PA chest x-ray?✔✔The level of T7, or the inferior angle of the scapula.
What happens when kVp is increased in an x-ray exposure?✔✔It increases the penetrating power of the x-ray beam.
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