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RADT 1085: CHAPTER 5 (X-RAY EQUIPMENT ) QUESTIONS AND ANSWERS Types of x-ray equipment - Answer- diagnostic and therapeutic Diagnostic range - Answer- 10-1200 mA 0.0001-10 seconds 25-150 kVp Tables must be - Answer- radioluscent easy to clean free of crevices (places to collect germs) difficult to scratch Power x-ray generation - Answer- incoming line current single phase power three phase power Incoming line current - Answer- 60 Hz alternating current ...

CH. 5, 8, 13 RADT 1065 EXAM QUESTIONS AND ANSWERS When x-rays are produced, they are emitted ____________________, that is, with equal intensity in all directions. - Answer- isotropically X-rays that escape through the protective housing are ____________________; they contribute nothing in the way of diagnostic information and result in unnecessary exposure of the patient and the radiologic technologist. - Answer- leakage radiation Properly designed protective housing reduces th...

RADT 1070 CHAPTER 3 EXAM QUESTIONS AND ANSWERS Right upper quadrant - Answer- In which of the four major quadrants of the abdomen would the gallbladder be found? Ala of ilium - Answer- Which radiographic landmark is most reliable to evaluate the posteroanterior (PA) projection of the abdomen for rotation True - Answer- The pancreas is located posterior to the stomach True - Answer- The lateral abdomen position will best demonstrate the prevertebral region Duodenum ...

RADT 334 - UNIT 3 EXAM QUESTIONS AND ANSWERS semiconductor - Answer- A material that can conduct an electric current or not, depending on the voltage applied across that material AEC - Answer- An electronic device designed to terminate x-ray exposure after properly exposing an image receptor line compensation - Answer- A method of adjusting the voltage to the x-ray imaging system to a constant value, in response to changes in voltage supplied by the power company capacito...

RADT 1075 FINAL EXAM QUESTIONS AND ANSWERS The acronym PACS stands for - Answer- Picture Archiving and Communication System EMR stands for - Answer- electromagnetic radiation and electronic medical record. Gray scale bit depth determines - Answer- the number of gray shades What is the anticipated file storage in gigabytes necessary for a computed tomography examination comprised of 2,200 images, each with a 512 x 512 matrix at 16-bit depth? - Answer- 1.15343 Gb The...

RADIATION THERAPY TECHNIQUES QUESTIONS WITH CORRECT ANSWERS Mark all concerning wedges: - reduce hot spots - can be hard or dynamic - used for tissue compensating of sloping surfaces - known as superflab - Answer- - reduce hot spots - can be hard or dynamic - used for tissue compensating of sloping surfaces Irradiated volume - Answer- Volume of tissue receiving a significant dose (50% or more of the prescribed dose) GTV - Answer- The gross, palpable, visible, or c...

RADT 102 – FINAL EXAM QUESTIONS AND ANSWERS What is the unit of mass? - Answer- kg The sum of protons and neutrons in a Nucleus are called the - Answer- Mass number The number of protons determine the ____ of an element - Answer- Atomic # In the excitation process, electrons in an atom are moved to a/an _____ energy state - Answer- Higher The maximum number of electrons found in any energy level (shell) at any point in time is calculated by the formula - Answer- ...

RADT Physics Concepts Chapter 2 Exam Questions and Answers An auto, starting from rest, undergoes constant acceleration and covers a distance of 1200 meters. The final speed of the auto is 60 meters/sec. How long does it take the car to cover 1200 meters? - Answer- 40 s. A car traveling at constant speed - Answer- can change direction. An auto moves 10 meters in the first second of travel, 10 more meters in the next second, and 10 meters during the third second. The acceleration...

RR 3.2 – RAD PROTECTION QUESTIONS AND ANSWERS If the entrance dose for a particular exam is 1200 mGy, the radiation exposure at 1 m from the patient will be approximately A. 120 mGy B. 12.0 mGy C. 1.20 mGy D. 0.12 mGy - Answer- C. 1.20 mGy Classify the following tissues in order of increasing radiosensitivity 1. Liver cells 2. Intestinal crypt cells 3. Muscle cells A. 1, 3, 2 B. 2, 3, 1 C. 2, 1, 3 D. 3, 3, 2 - Answer- D. 3, 3, 2 Differential absorption of the x-ray ...

Radiation Protection in Medical Radiography, Chapter 4 Exam Q’s and A’s Who discovered x-rays? - Answer- Wilhelm Conrad Roentgen What year were x-rays discovered? - Answer- 1895 How were x-rays discovered? - Answer- Roentgen was investigating the nature of cathode rays and fluorescent materials. Passed electricity through a Crookes tube that was covered with a shield of black cardboard. He observed light coming from the paper coated with barium platinocyanide. Found out ...

RAD PROTECTION WEEK 2 EXAMS QUESTIONS AND ANSWERS Electromagnetic radiation travels or propagates through space in the form of a wave but can interact with matter as a particle of energy called a photon. This dual nature is referred to as - Answer- wave-particle duality Terrestrial radiation includes which of the following sources? - Answer- Long-lived radioactive elements such as uranium-238, radium-226, and thorium-232 that are present in variable quantities in the crust of the ...

Exposure Worksheet 1-2 and 1-3 Exam Questions and Answers What was the device with which Roentgen discovered X- rays? - Answer- Crooks tube The phosphor that Roentgen used in early experiments with -rays was which of the following? - Answer- Barium Platinocyanide How are x-ray tube voltages measured? - Answer- Kilovolt Which of the following early pioneers developed the fluoroscope ? - Answer- Thomas Edison Who first applied x-ray beam collimation and filtration in...

RADIATION MONITORING (CH5) EXAM QUESTIONS AND ANSWERS Personnel Dosimeter - Answer- Provides an indication of the working habits and working conditions of diagnostic imaging personnel. Determines occupational exposure by detecting and measuring the quantity of ionizing radiation to which the dosimeter has been exposed over a period of time. Does not protect the wearer from exposure because the instrument is just meant to detect and measure the amount of ionizing radiation to which it has ...

Radiation Protection and Safety Exam Questions with Answers According to the current recommendations, which of the following will have the highest annual dose limit? a. the lens of the eye b. the hands of a member of the general public c. the embryo/fetus d. the hands of a pregnant therapist - Answer- d. the hands of a pregnant therapist According to the current recommendations, the guidance levels for cumulative exposures for a 30 y/o occupational worker with 3 years of experienc...

CH. 11,12,14 RADITION PROTECTION TEST EXAM QUESTIONS AND ANSWERS When the time spent in a higher radiation area is reduced or limited, occupational exposure: a) is also reduced. b) is increased slightly. c) remains the same. d) is increased considerably. - Answer- a) is also reduced. Protective eyeglasses with optically clear lenses should contain a minimal lead equivalent protection of: a) 0.15 mm. b) 0.25 mm. c) 0.35 mm. d) 0.50 mm - Answer- c) 0.35 mm. Who should dete...

Week 7 - Technique Charts Guidance Exam Questions and Answers What is a technique chart and how is it used in radiography? - Answer- A technique chart provides suggested exposure factors to use based on the anatomic part being radiographed, thickness of tissue, and position of patient. Provides the technician with predetermined exposure settings for various radiographs to be taken in order to receive an image of good diagnostic quality. What is Santes' rule? How does it apply t...

CHAPTER 5 RADIOGRAPHIC IMAGING AND EXPOSURE EXAM QUESTIONS AND ANSWERS Which of the following is defined as a graphic representation of the pixel value? a) Automatic rescaling b) Value of interest c) Histogram d) Exposure indicator - Answer- Histogram What process is employed to maintain consistent digital image brightness for over or underexposure? a) automatic rescaling b) Histogram c)exposure indicator d) LUTs - Answer- automatic rescaling Which of the following i...

Radiation Safety Exam Questions and Answers What is the mechanical support of the tube head means? - Answer- The mechanical support of the tube head can be adjusted to remain stable during exposure and shall not be hand held unless manufacturer designed system to be hand held while operating What is the safety distance between operator and patient while taking x-ray? - Answer- 6ft Define scatter radiation - Answer- radiation that changes direction when it hits the patient or...

RADIATION PROTECTION CHAPTER 4 EXAM QUESTIONS AND ANSWERS Which of the following factors must be multiplied to determine the EfD from an x-radiation exposure of an organ or body part? A. EqD x Wr x D B. Wt x Wr x ColEfD C. D x Wr x Wt D. D x C/kg - Answer- C. D x Wr x Wt Which of the following is the SI unit of radiation exposure that is used for x-ray equipment calibration? A. C/kg B. DAP C. R D. Sv - Answer- A. C/kg The expression 10(-6) may be symbolically expressed a...

RADT 1200 – CHAPTER 6 EXAM QUESTIONS AND ANSWERS Chemical building material for all living things - Answer- protoplasm Made up of a molecule of glycerin & 3 molecules of fatty acid - Answer- lipids Moderate or control the cell's various physiologic activities - Answer- enzymatic proteins Mineral salts - Answer- electrolytes Chemical secretions manufactured by various endocrine glands and carried by the bloodstream to influence the activities of other parts of ...