How are x rays emitted - Study guides, Class notes & Summaries

Radiographer A radiologic technologist who administers ionizing radiation to perform radiographic procedures. They produce radiographic procedures at the request of a physician. Radiologic technology a health care profession that includes all diagnostic imaging technologists and radiation therapists. Radiographers must evaluate an image for _______ quality, _______, and _________ relative to the diagnosis or the reason for the procedure. technical, accuracy, appropriateness ALARA As Low A...

Kinetic energy - energy of motion Kinetic Energy equation - KE=1/2mv^2 The distance between the filament and the x ray tube is approximately........ - 1cm Most kinetic energy of electrons is converted to........ - heat Approximately what percentage of the kinetic energy of electrons is converted from the cathode to heat? - 99% What percentage of electric kinetic energy is used for the production of x rays? - 1% Doubling the x ray tube currents also doubles the...

How do you correct for attenuation? - ANS CT AC Map Cs137/Ge68 Transmisson Why is CT better for attenuation correction in PET? - ANS Decrease noise on attenuation map Decrease acquisition time Better anatomic info. How are x-rays produced? - ANS Bremsstrahlung radiation - (braking radiation) A charged particle interacts with an atom by entering the electron shell, slowing down, and changing direction before exiting the electron shell. The atom emits the Brems ...

Maryville NURS 611 patho exam 1 QUESTIONS ANS ANSWERS WITH COMPLETE SOLUTIONSApoptosis A programmed cell death that is regulated or programmed. Cellular self-destruction for elimination or unwanted cell populations Necrosis Rapid loss of the plasma membrane structure, organelle swelling, mitochondria dysfunction What is the #1 cause of cellular injury leading to necrosis (especially the kidney and heart) hypoxia What is the #1 cause of hypoxia? ischemia Ma...

Suppose you know the frequency of a photon and the speed of light. What else can you determine about the photon? correct answers its wavelength and energy Which forms of light are lower in energy and frequency than the light that our eyes can see? correct answers infrared and radio If we say that a material is opaque to ultraviolet light, we mean that it __________. correct answers absorbs ultraviolet light Red light has a __________ wavelength and a __________ frequency that does blue ...

DANB radiology Questions and Answers 2024 primary radiation the radiation that is emitted from the x-ray tube and strikes the patient directly is called decreased compared to radiographic exposure of a patient with complete dentition, when exposing periapical radiographs on an edentulous patient, the exposure time should be Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:06 / 0:15 Full screen Brainpower Read More shielding one of the most eff...

CWB Module 1 Exam Questions and Answers All Correct True or False? Creating a safe working environment is strictly the responsibility of the employer? - Answer-False, it the the joint responsibility of the employer and employee. WHMIS stands for: a) Workers Health Monitoring System b) Workplace Hazardous Materials Information System c) Workers for a Healthy Manufacturing Industry Society - Answer-b) Workplace Hazardous Materials Information System What are three ways that WHMIS infor...

CWB 2 Module 18 Questions True or False? X-rays are a type of electromagnetic wave but gamma rays are beams of tiny charged particles." - correct answer False List three disadvantages of radiography over other inspection methods. - correct answer Bulky equipment, Special safety precautions, some defects not reliably detected The effect of increasing the voltage (kV) in an X-ray machine is to: A) Increase the X-ray beam intensity without changing its wavelength B) Decrease the inte...

Fixed mAs/ variable kVp chart - Answer adjust kVp by multiplying by 2 (+/-) for every increment of ONE centimeter or inch of size difference Fixed KVP/ variable mAs chart - Answer adjust mAs by multiplying (+) by 2 for every 4-5 centimeter or inch size difference digital image quality factors - Answer brightness, contrast resolution, spatial resolution, distortion exposure indicator, noise brightness - Answer intensity of light coming through monitor contrast resolution - Answer how ...

NRRPT EXAM WITH CORRECT QUESTIONS AND ANSWERS LATEST UPDATED (100% VERIFIED GRADED A+) Average energy of a positron emitted during positron decay? - Answer 4/10 or 0.4 of the maximum energy. 1 WLM = ? - Answer 1 rem CEDE Radiation exposure to miners is regulated by? - Answer 30 CFR Maximum dose allowed to miners is? - Answer 4 WLM per year A geiger counter has enough voltage to cause? - Answer Secondary electrons with a long range avalanche What type of decay "competes" with positron d...