Compton Samenvattingen, Aantekeningen en Examens

ARRT Registry Practice Test 1 All of the following EXCEPT ___ will result in an increase in AEC response time. a. decreasing the kVp b. Increasing the focal spot size c. increasing the part thickness d. increasing the SID - ANSWER b. increasing the focal spot size Increasing the focal spot size does not change the AEC response time It affects the spatial resolution. Decreasing the kVp increases the exposure time because more photons are absorbed, resulting in...

Radiation Protection in Radiography Comprehensive Final Exam (2024) || Questions & Answers (Rated A+) Radiation Protection in Radiography Comprehensive Final Exam (2024) || Questions & Answers (Rated A+) Which of the following is considered by the EPA to be the second leading cause of lung cancer in the United States? a. Annual PA and lateral radiographic images b. Cosmic ray exposure c. Radon exposure d. A fluoroscopic examination of the upper gastrointestinal tract - ANSWER - c. Rado...

Natural background radiation represents what amount of human radiation exposure? - 50% The greatest source of natural background radiation exposure is? Cosmic rays radioactive materials the body itself radon gas - Radon gas Cosmic natural background radiation is a part of _______________ _____________ exposure. - Natural background Radon gas: a. Presents a danger when undetected b. Is present in doses proportional to other sources c. Is entirely human-made d. Is the s...

Which of the following contributes significantly to the exposure of the radiographer? A. positrons B. electrons C. compton scatter D. photoelectric effect correct answersC. Small angle scatter will: A. degrade the image by blurring the sharp outline of the structures B. enhance the appearance by clearly delineating the outlines of structures C. enhance the appearance of the image only when a positive contrast medium is used D. occurs only as a result of pair production correct answers...

radiation that exits the xray tube from the anode is called CORRECT ANSWER primary radiation photon tissue interaction in diagnostic radiography that results in the total absorption of xray photon and production of contrast in image CORRECT ANSWER photoelectric photon tissue interaction that produces a recoil electron and a scatter photon in diagnostic radiation CORRECT ANSWER compton traditional unit of in air exposure is the CORRECT ANSWER roentgen SI unit of absorbed dose CORRECT ...

Which of the following will decrease the amount of scatter radiation produced? a. increasing the x-ray field size b. decreasing the x-ray field size c. increasing the grid ratio d. decreasing the grid ratio correct answer: b. decreasing the x-ray field size Which of the following is not a type of beam restrictor? a. aperture diaphragm b. positive beam-limiting device c. cylinder d. lead shield correct answer: d. lead shield As collimation decreases, the quantity of scatter ra...

Attenuation: A. Is radiation that emerges from the patient B. Describes changes in the x-ray beam as it travels through the patient C. Produces only scatter radiation D. Occurs only at doses used in radiation therapy B. Describes changes in the x-ray beam as it travels through the patient Which photon-tissue interaction makes radiography possible because of its creation of contrast? A. Compton B. Coherent C. Photoelectric D. Pair production C. Photoelectric Which photon-t...

LRA 211 Latest Update with Verified Solutions The three fundamental particles of the atom are the proton, neutron, electron The atomic nucleus contains protons and neutrons The component of the nucleus that has a positive charge and mass is the protons The component of the nucleus that has mass but no electrical charge is the Neutron If an atom has more electrons than protons, it will Negative When an atom becomes negatively or positively charged it is usually due to a change in the number ...

An image that demonstrates low contrast can be caused from: 1. High mAs 2. Low kVp 3. Insufficient beam restriction CORRECT ANSWER 3 only Which of the following interactions with matter reduce contrast in an x-ray image? CORRECT ANSWER Compton scattering From anatomical position, pronating the hand will result in the palm facing ____. CORRECT ANSWER Posteriorly The maximum variation between consecutive exposures when using the same technical factor is: CORRECT ANSWER within 5% ...

Attenuation: a. is radiation that emerges from the patient b. describes changes in the x-ray beam as it travels through the patient c. produces only scatter radiation d. occurs only at doses used in radiation therapy - Answer Describes changes in the x-ray beam as it travels through the patient Which photon-tissue interaction makes radiography possible because of its creation of image contrast? a. Compton b. Coherent c. Photoelectric d. Pair production - Answer Photoelectric...