LMRT-Radiography Essentials 2024 UPDATED

LMRT-Radiography Essentials 2024 UPDATED 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? - Answer -Increase kVp by 30% Which of the following (IR) system speeds will result in the lowest patient dose? - Answer -Faster speed IR system What is the primary purpose of using gonad shields during radiography? - Answer -Reduce the likelihood of genetic effects Contact & shadow are two types of gonad shield - Answer -TRUE When should gonad shields be used? - 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: - Answer -repeat exposures The limited operator can reduce repeat exposures by: - Answer -clearly instructing patients How does x-ray beam restriction minimize patient exposure - 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 - Answer - Collimator How does filtration reduce patient exposure - Answer -Removes longer wavelength photons What is the National Council on Radiation Protection and Measurements (NCRP) recommendation for the amount of total filtration - Answer -2.5mm Al Equivalent What are the three principal methods used to protect limited operators from unnecessary radiation exposure? - Answer -1. Time 2. Distance 3. Shielding Which of the following is NOT a type of personnel radiation shielding? - Answer -a. Apron b. Glove c. Thyroid shield d. Shadow******** CORRECT