LMRT-Radiography Essentials QUIZ WITH CORRECT ANSWERS 202425 UPDATE

Which of the following changes in (KVP) will result in the greatest reduction of patient dose, when (MAS) is adjusted to compensate for the change? - CORRECT ANSWER Increase kVp by 30% Which of the following (IR) system speeds will result in the lowest patient dose? - CORRECT ANSWER Faster speed IR system What is the primary purpose of using gonad shields during radiography? - CORRECT ANSWER Reduce the likelihood of genetic effects Contact & shadow are two types of gonad shield - CORRECT ANSWER TRUE When should gonad shields be used? - CORRECT ANSWER When the gonads are within 5cm of the radiation field The greatest cause of unnecessary radiation to patients that can be controlled by the limited operator are: - CORRECT ANSWER repeat exposures The limited operator can reduce repeat exposures by: - CORRECT ANSWER clearly instructing patients How does x-ray beam restriction minimize patient exposure - CORRECT ANSWER It limits the radiation field to the area of interest What is the device that allows the limited operator to vary the size of the radiation field - CORRECT ANSWER Collimator How does filtration reduce patient exposure - CORRECT ANSWER Removes longer wavelength photons What is the National Council on Radiation Protection and Measurements (NCRP) recommendation for the amount of total filtration - CORRECT ANSWER 2.5mm Al Equivalent What are the three principal methods used to protect limited operators from unnecessary radiation exposure? - CORRECT ANSWER 1. Time 2. Distance 3. Shielding Which of the following is NOT a type of personnel radiation shielding? - CORRECT ANSWER a. Apron b. Glove c. Thyroid shield d. Shadow******** CORRECT Personnel shielding must be worn on the rare occasion during which the limited operator may need to remain in the radiographic room during an exposure to