Collimator Samenvattingen, Aantekeningen en Examens
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Instrumentation NMTCB Practice with Certified Solutions
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Instrumentation NMTCB Practice with Certified Solutions 
What is a gamma camera crystal made of? Sodium iodide activated with thallium 
What is the purpose of the crystal in a gamma camera? To absorb gamma (γ) rays and convert them into visible-light photons 
What is the mechanism by which gamma (γ) rays interact with a gamma camera crystal? Photoelectric effect or Compton scattering. 
What is the relationship between the energy of an absorbed gamma (γ) ray and the amount of light produced by...
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Dental Nursing Radiography - Unit 314 Questions With Correct Solutions, Already Passed!!
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Radiation cannot be - Answer-seen, heard or felt 
Quality assurance in radiography is a - Answer-Legal requirement 
Recall patients who have a high caries risk should be radiographed at what intervals using horizontal 
bitewings? - Answer-6 months 
What is the purpose of black paper in intraoral film packets? - Answer-Prevents exposure of the film to 
light 
What is classed as a safe level of X-ray exposure? - Answer-There isn't a safe level 
What are extraoral cassettes marked with? - Answer-T...
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Nuclear Medicine Final Exam correct 100%
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Nuclear Medicine Final Exam corBasic Gamma Camera Components -ANSWER Collimator, NaI scintillation crystal, light guide, PMT array 
 
How does the collimator work? -ANSWER Controls which gamma rays are accepted by absorptive collimation, forming a projected image of the distribution on the surface of the crystal. 
 
What information do event signals contain? -ANSWER Position and energy information (could also contain time information). 
 
Reflective Material Around Crystal -ANSWER Maximizes ligh...
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GXMO State Board exam| Questions and 100% Correct Verified Answers
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The boxlike device attached under the tube housing that allows the limited operator to 
vary the size of the radiation field is called a: 
A. collimator 
B. transformer 
C. detent 
D. tube port - Answer A. collimator
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CT Registry Review (MIC) questions with correct answers
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In order for an x-ray photon to be measured it must: 
1. enter the detector chamber 
2. be absorbed by the detector material 
3. be converted to a measurable event CORRECT ANSWER 1,2,3 
 
Which system component converts the projection attenuation data into the proper digital form for the array processor? CORRECT ANSWER analog-to-digital converter 
 
Which of the following is NOT a function of a PACS system? 
a. reconstruction of the image from the raw data 
b. long term data storage 
c. digital ...
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DANB RHS Practice Test Questions with Correct Answers
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DANB RHS Practice Test Questions with Correct Answers 
 
The size and shape of the primary beam is controlled primarily on the? 
a)length of PID 
b)collimator 
c)thickness of filter 
d)size of focal spot - Answer-b) collimator 
 
The dentist suspects that the patient has significant bone loss. The best film for reading his or her bone level is? 
a) parallel technique periapical 
b)horizontal bitewing 
c)panoramic film 
d)vertical bitewing - Answer-D) Vertical bitewing 
 
Which of the following i...
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Nuclear Medicine Exam Questions with 100% Correct Answers
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Nuclear Medicine Exam Questions with 
100% Correct Answers 
In imaging with 67Ga-citrate, target-to-background ratio increases over time because of gallium 
concentration in tissue: 
remaining the same while blood clearance progresses 
decreasing while blood clearance progresses 
remaining the same while blood clearance decreases 
decreasing while blood clearance decreases - answerremaining the same while blood 
clearance progresses 
Following the injection of 67Ga-citrate, imaging can begin: 
i...
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Exam 1: Intro to CT
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Gantry 
Contains the x-ray tube and detectors 
 
Includes 80-90-cm aperture for patient 
 
 
Section 
The same as "slice" or "cut" 
 
 
xray tube 
source of xrays 
 
 
reference detector 
used to monitor the incident beam power 
 
 
Collimator 
Restricts the size and shape of the x-ray beam
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Nuclear Medicine Final Exam 2024 with 100% correct answers
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Basic Gamma Camera Components - correct answer Collimator, NaI scintillation crystal, light guide, PMT array 
 
How does the collimator work? - correct answer Controls which gamma rays are accepted by absorptive collimation, forming a projected image of the distribution on the surface of the crystal. 
 
What information do event signals contain? - correct answer Position and energy information (could also contain time information). 
 
Reflective Material Around Crystal - correct answer M...
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CT Registry Review (MIC) QUESTIONS AND ANSWERS RATED 100% CORRECT!!
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In order for an x-ray photon to be measured it must: 
1. enter the detector chamber 
2. be absorbed by the detector material 
3. be converted to a measurable event correct answers 1,2,3 
 
Which system component converts the projection attenuation data into the proper digital form for the array processor? correct answers analog-to-digital converter 
 
Which of the following is NOT a function of a PACS system? 
a. reconstruction of the image from the raw data 
b. long term data storage 
c. digita...
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