LMRT core / radiation & safety questions with correct answers

high potential difference CORRECT ANSWER Required to move the electron stream rapidly across the X-ray tube/ VOLTAGE Unit of potential difference CORRECT ANSWER Volts patient dose: CORRECT ANSWER calculated as ESE (entrance skin exposure) Transformer that has more windings on primary side: CORRECT ANSWER step-down Factors that affect xray QUALITY: CORRECT ANSWER kvp & filtration How does scatter rad fog reduce visability of detail in image? CORRECT ANSWER it decreases contrast Contrast is directly influenced by: CORRECT ANSWER fog & collimation What minimizes shape distortion? CORRECT ANSWER - position plane of subject parallel to IR - position CR perp to IR and subject Prime factors for exposure: CORRECT ANSWER milliamperage exposure time kvp