Photon tissue interaction - Study guides, Class notes & Summaries

Radiosensitivity is determined by four factors: - ️️1) The metabolic state of the tissue-the faster cells are dividing in a tissue, the more radiosensitive that tissue is (Law of Bergonie and Tribondeau); radiosensitive-bone marrow stem cells, sperm, ova; Radioresistant-nerve and muscle. 2) The rate at which the radiation is delivered (protraction) -the more radiation delivered at one time, the more cellular damage occurs 3) The amount of time between exposures (fractionation)-the more...

Exposure - correct answer capacity of x rays to ionize the air RAD - correct answer absorbed dose: energy of ionizing radiation per mass REM - correct answer Roentgen equivalent to man, Equivalent Dose: biological affects on a tissue or organ Sievert - correct answer Effective Dose: estimated risk to h...

1 Radiation Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Test 1.1A. Radiation Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Test 1.1A. Explanatory Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Test 1.2A. Radiation Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4 Test 1.2A. Explanatory Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.5 Te...

Units of radiation absorbed in the air? - correct answer Gya The change in the x-ray beam as it travels through a patient? - correct answer attenuation photon tissue interaction that makes radiology possible because of it's creation of contrast? - correct answer photoelectric interaction (fully absorbed = contrast) Unit of radioactivity? - correct answer becquerel unit of effective dose? - correct answer Sievert Linear energy transfer ... - correct answer varies for d...

What are possible results of ionization? 1. Unstable atoms 2. Production of low-energy x-rays 3. Formation of new molecules harmful to the cell - 1,2,3 OSL dosimeters may be worn as long as: - 1 quarter The annual effective absorbed dose equivalent limit for the general public, assuming infrequent exposure, is: - 5msv The photon-tissue interaction that does not cause ionization is: - coherent Before moving a patient, the radiographer should assess which of the follow...

LASERS CERTIFICATION EXAM QUESTIONS AND CORRECT ANSWERS, WITH COMPLETE SOLUTION 2024. Theorized the concept of stimulated emission Einstein Theorized that an excited electron will spontaneously return to its ground state Bohr First ruby laser was created in _____ by ______. 1960, Ted Maiman _________ reported in 1965 that a ruby laser could vaporize enamel. Stern and Sognnaes First pulsed Nd:YAG laser released in ______ and cuts ______ tissue. 1990, soft tissue In _____ the first de...

TMB Mosby Exam Questions & Answers 2023/2024 Primary radiation - ANSWER-Radiation exiting the xray tube Hydrogen peroxide - ANSWER-Free radicals may combine to form? Droplet transmission - ANSWER-Infection transmission occurs via coughing or sneezing Histoplasmosis - ANSWER-Pathologic disease that is caused by inhaling fungal spores is? Input phosphor - ANSWER-Converts xray energy to light energy in what part of the image-intensifier tube? LPO - ANSWER-Demonstrates hepatic fl...

Mosby Comprehensive Review Test | Questions And Answers |100% Correct Answers Mosby Comprehensive Review Test | Questions And Answers |100% Correct Answers

With increasing levels of beam filtration where will the greatest dose savings be realized? A. in the initial layers of tissue struck by the beam B. in tissues at the midline C. in tissues at the exit surface of the patient D. at the level of the patient's gonads correct answer: A. in the initial layers of tissue struck by the beam Which of the following barium/air filled anatomic structures is best demonstrated in the LAO position? A. ileocecal valve B. sigmoid colon C. splenic flex...

LMRT Core Review Latest 2023 Graded A Where is the stator of the anode induction motor located? O/S the glass envelope& inside the rotor The exposure switch is found between the Autotransformer & the timer circuit The electrical device used to adjust the mA selection is a/an Variable resistor The timer control is found b/w the Incoming line & the step-down transformer The kVp control is found b/w the Incoming line & the exposure switch All of the following are radiographer-operated controls...