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FREE RADIOLOGY AND STUDY GAMES ABOUT RAD
PHYSICS TEST 2
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -40 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation
Question 1: The standard size cassette for spot filming is
Answer:
9x9
Question 2: Electrostatic lenses are used to accelerate and focus
Answer:
electrons Question 3: Insulation of the high voltage components of the tube and absorption of the heat produced by x ray production is achieved through the use of
Answer:
dielectric oil Question 4: Which of the following would affect the production of a thermionic cloud?
Answer:
filament diameter, length, and temperature
Question 5: The area of the focal spot that is projected out of the tube toward the object being radiographed is the
Answer:
effected focal spot
Question 6: The output screen absorbs __ and emits __
Answer:
electrons, light photons
Question 7: During fluoroscopy, the SOD cannot be less than __ inches
Answer:
20 Question 8: Each of the following is a material of choice for the filament except
Answer:
Copper Question 9: The greater the voltage supplied to the electrostatic lenses, the __ the acceleration and the __ the focal point to the input screen
Answer:
greater, closer
Question 10: The input screen is __ in shape
Answer:
concave
Question 11: The function of the cathode is to produce
Answer:
a thermionic cloud
Question 12: Photoemissive materials absorb __ and emit __
Answer:
light photons, electrons
Question 13: The shape of the input screen helps to control
Answer:
distortion
Question 14: The focusing cup has a/an ____ charge
Answer:
negative
Question 15: Which condition is needed to produce an x ray?
Answer:
- a source of electrons
- a vacuum
- a large potential difference
Question 16: The function of the stator and rotor assembly is to
Answer:
rotate the anode Question 17: The physical area of the focal tract affected by the electron beam is the
Answer:
actual focal spot
Question 18: Digitization of the fluoroscopic image permits
Answer:
storage on a CD, transfer via internet, hard copy printing via laser disc
Question 19: The rotor is located ___ the stator and ____ the envelope
Answer:
inside, inside
Question 20: The most common solution for quantum mottle is to
Answer:
increase the fluoro tube mA
Question 21: Fluoroscopic mA range is commonly ___ mA
Answer:
0.5 - 5.0
Question 22: Fluoroscopy is commonly used for observation of
Answer:
the heart, GI tract, and surgical procedure
Question 23: Filament materials are chosen for their
Answer:
high melting points Question 24: During fluoroscopic image intensification, the primary x ray beam exits the patient and strikes the ___ of the image intensifier
Answer:
input screen
Question 25: The photocathode absords __ and emits __
Answer:
light photons, electrons Question 26: The only portion of the anode assembly placed outside the vacuum of the envelope is the
Answer:
stator
Question 27: The fluoroscopic xray tube and image receptor are mounted on a
Answer:
C Arm
Question 28: The input screen absorbs __ and emits __
Answer:
x ray photons, light photons
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