The x ray circuit - Study guides, Class notes & Summaries

Coulter principle. - Answer-The ability to count and measure the size of particles using an electric circuit. Particles are moved through a small aperture, their presence causes a narrowing of the aperture, which leads to an increase in resistance.By using constant I, According to Ohms law (U= I * R), when R increases, U increases and pulse is generated. Parts and functions of the Coulter-counter - Answer-- Two spaces with a small aperture in between, capillary (contains the electrolyte sol...

Wilhelm Conrad Roentgen - Lived Discovered xrays on November 8, 1895 Discovered xrays at University of Würzburg (Germany) First xray was taken of Rowntgen's wife Anna Bertha's hand American Society of Radiologic Technologists (ASRT) - Founded in Chicago in 1920 Oldest and largest professional radiologic science organization American Registry of Radiologic Technologists (ARRT) - Founded in 1922 Establishes standards and exams necessary to certify radiologic technologists Joint R...

hat is the unit of measurement for calibrating the "resolution" of an imaging system? A. grid ratio B. line pairs/millimeter C. pinhole camera D. modulation quotient - Answer B. line pairs/millimeter Where in the X-ray circuit does the filament circuit draws its electrical energy? A. from the low voltage primary circuit B. from the high voltage secondary circuit C. midway between the autotransformer and primary of the step up transformer D. after the exposure switch - Answer A. from t...

The X-Ray Circuit (Chapter 4) Questions And Answers An x-ray tube is an example of current flow in a/an (a. gas, b. vacuum, c. metallic conductor, d. ionic solution) - ANS-b. vacuum Which of the following increases or decreases voltage by a fixed amount? (capacitor, rheostat, diode, transformer) - ANS-transformer Electrostatic force between charges is directly proportional to product of quantities and inversely proportional to square of distance between them is _________ law - ANS-Coulo...

RAD 122 Final Exam Questions & Answers 2024/2025 When did Roentgen discover x-rays? - ANSWERSNovember 8, 1895 A device used to control the size and shape of an x-ray beam/radiation field is the: - ANSWERSCollimator An x-ray machine that permits viewing of the x-ray image in motion in real-time is called: - ANSWERSFluoroscope The anode or positive end of the x-ray tube is the end that contains the: - ANSWERSTarget The cathode or negative end of the x-ray tube contains the: - ANSW...

TEST BANK for Essentials of Radiographic Physics and Imaging, 3rd Edition by James Johnston & Terri Fauber ISBN 9780323566681 _TABLE OF CONTENTS_ 1.Introduction to the Imaging Sciences Section I: Principles of Radiation Physics 2.Structure of the Atom 3.Electromagnetic and Particulate Radiation 4.The X-Ray Circuit 5.The X-Ray Tube 6.X-Ray Production 7.X-Ray Interactions with Matter Section II: Image Production and Evaluation 8.Image Production 9.Image Quality and Characteristics 10.Digital Image...

RRT Final Exam Questions And Answers 100% Verified When checking a patient's intermittent positive-pressure breathing(IPPB) breathing circuit before use, you notice that the device will not cycle off, even when you occlude the mouthpiece. What would be the most appropriate action in this case? check the circuit for leaks We have an expert-written solution to this problem! Atelectasis Maybe the result of which of the following. A. Lung Compression B. Thoracic or abdominal surgery C. L...

What is the correct term used to describe an intravenous injection of a concentrated volume of contrast media? a. bolus b. infusion c. extravasation d. luminal - a. bolus Which of the following methods utilizes a detector that captures x-ray energy and converts it into an electronic signal? a. indirect capture b. CCD c. cassette based radiography d. direct capture - d. direct capture The energy of a characteristic x-ray photon created when an L shell electron fills a K shell vacan...

RADT 1085 Final Exam Questions & Answers 2024/2025 The changing of alternating current to direct current is known as what? - ANSWERSRectification What is the name of the closed path over which electric current flows? - ANSWERSCircuit What is a device called that allows current to flow in only one direction? - ANSWERSConductor Which type of rectification will supply the x-ray tube with the greatest power? - ANSWERSFull-wave What is the voltage supplied to the autotransformer call...

Fluoroscopy Exam Test Bank Questions with 100% Correct Answers What activates the production of x-rays during fluoro? - Answer- Dead man switch (foot switch); NOT THE "FOOT PEDAL"! How many light photons are emitted for each absorbed x-ray photon? - Answer- 5000 light photons. What percentage of light from an image intesifier's output screen is transmitted to the cine camera when in use? - Answer- 85 - 95%. Which type of timer accuracy test is performed for three phase x-ray unit...