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RADT 100 Exam 1 Latest With 100% Correct Answers - Radiologic Physics

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Course RADT 100 (RADT100)
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RADT 100 Exam 1 Latest With 100% Correct Answers - Radiologic Physics · When and who discovered x rays, fluoroscopy - ANS: o Wilhelm Conrad Roentgen: x-rays o Thomas Edison: invented first fluoroscope · Review the characteristics of xrays - ANS: o Cannot be refracted by a lens o Not detectable by human senses o Can ionize matter o Travel in straight lines o Can penetrate matter that is opaque to light o Causes certain crystals to flow (fluoresce) · Review the parts of the xray machine and xray tube - ANS: anode cathode filaments focusing cup target anode stator · What grids or buckys are used for and when are they used? - ANS: o Grids and buckys: put between patient and IR to prevent scatter radiation from degrading the image · What departments use ionizing radiation - ANS: - X-Rays - Radiation Therapy - Mammogram - CT Scan - Pet Scan - Nuclear Medicine - Therapeutic X-Ray - Gamma rays - Diagnostic X-Rays · How do we calculate mAs? - ANS: o mA and exposure time (mAs when combined) affect the quantity only · What is an intensifying screen, when and why do we use them? - ANS: converts the x-ray energy into light, which reaches the film and forms the latent image

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