LMRT-Radiography Essentials| 209 QUESTIONS| WITH COMPLETE SOLUTIONS

LMRT-Radiography Essentials| 209 QUESTIONS| WITH COMPLETE SOLUTIONS 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 ex