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ARRT REGISTRY EXAM LATEST UPDATE LATEST 200 REAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS)|AGRADE
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ARRT REGISTRY EXAM LATEST UPDATE LATEST 200 REAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS)|AGRADE

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  • 23 de diciembre de 2023
  • 23
  • 2023/2024
  • Examen
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  • arrt registry exam latest update l
  • arrt registry exam latest update

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ARRT REGISTRY EXAM LATEST UPDATE 2023 -2024 LATEST 200 REAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS)|AGRADE Which position of the shoulder demonstrates the lesser tubercle in profile medially? - ANSWER - Internal rotation In which position of the shoulder is the greater tubercle seen superimposed on the humeral head? - ANSWER - Internal rotation Which carpals are best demonstrated by ulnar deviation/flexion? - ANSWER - Lateral carpals, scaphoid The long. flat structures that project posteromedially from the pedicles are the - - ANSWER - Laminae - ANSWER - Where do the electrons that travel acros s the tube come from? - ANSWER - Thermionic Emission How are the electrons accelerated across the tube? - ANSWER - High Voltage In what direction do electrons flow across the tube? - ANSWER - Cathode to Anode (Spinning) How are electrons focused in the tub e? - ANSWER - With focusing Cups What happens when electrons are decelerated? - ANSWER - They give off Photons How are electrons slowed down in the tube prior to emission of photons? - ANSWER - The curve a tungsten nucleus. Bremsstrahlung Interactions What does Frequency determine in xray photons? - ANSWER - Energy What are two early somatic effects of ionizing radiation? What is the dose required for this? - ANSWER - 2 Sv redness hair loss What are some late somatic effects of ionizing radiation exposure? What dosage does occur at? - ANSWER - 5 Sv cancer cataracts What is the difference between threshold and non -threshold? - ANSWER - Threshold equals specific dose non-threshold equals chance What is relative biologic effectiveness? - ANSWER - The relative capability of radiation with different LEDs to produce a particular biologic reaction Describe cell radiosensitivity - ANSWER - Doses of ionizing radiation produce different degrees of damage in different kinds of human cells. The more mature and specialized the less sensitive it is to radiation. High reproductive rate equals highly sensitive to radiation What is the LD 50/30 for adult humans? - ANSWER - Is the dose where which 50% of the popu lation dies after 30 days of exposure to high amounts of ionizing radiation. 3 Sv What is oxygen enhancement ratio? - ANSWER - It describes the effect where in oxygen -rich environments, radiation does more damage. High linear energy transfer particles have an OER of one low linear energy transfer particles have an OER of three (radiation dose has to be three times higher to do the same damage without oxygen) Early somatic effects - ANSWER - Erythema 2 Sv epilation 5 Sv Late somatic effects - ANSWER - Carcin ogenesis cataractoGenesis Acute effects of radiation - ANSWER - Erythema epilation desquamation Chronic effects of radiation - ANSWER - Effects that appear within minutes hours days weeks after high -dose exposure. Basically nonstochastic somatic effects. What are somatic effects? - ANSWER - They are the effects that you can see What are the four ARS response stages? - ANSWER - Prodromal latent manifest recovery or death Carcinogenesis - ANSWER - Occurs randomly when the body is introduced to radiation. Stochastic Hematopoietic syndrome - ANSWER - 0. 25 to 1 grays erythrocyte lymphocyte leukocyte thrombocytes

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