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Mosby's Exam Review Image Production 2025 Questions and Answers Which of the following reduces the scatter radiation reaching the detectors? - -CORRECT ANSWER--both a and c (Pre-detector collimation and post-patient collimation are synonymous. Both terms describe a device designed to remove scatter radiation before it reaches the detector.) Which of the following is the primary interaction between x-ray photons and tissue during computed tomography? - --CORRECT ANSWER--Compton effect (Owing to the high-energy beam used in CT, the Compton effect is the predominant interaction between x-ray and matter. CT scanners use between 120 and 140 kVp, yielding x-ray energies with averages between 70 and 80 keV.) The process by which electrons are produced at the cathode of a CT x-ray tube is known as: - --CORRECT ANSWER--thermionic emission (When the cathode of an x-ray tube is heated, electrons are released through the process of thermionic emission. It is these electrons that are then accelerated toward the anode for x-ray production.) ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1