Resistive magnet - Study guides, Class notes & Summaries
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ASRT test questions on all 12 modules (All correctly answered)
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The most common type of magnet used in today's MR systems is the _______________. 
 
A. resistive magnet 
B. permanent magnet 
C. superconducting magnet 
D. open MR scanner correct answers C. superconducting magnet 
 
The positively charged part of an atom is the _____________. 
 
A. electron 
B. neutron 
C. proton 
D. nucleus correct answers C. proton 
 
When a hydrogen nucleus is positively charged and spins, it generates a small magnetic field called a _____________. 
 
A. larmor equation ...
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AC Circuit Final Exam Review questions with 100- correct answers.
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T/F: Current exists in an ideal capacitor only when its voltage is changing 
True 
 
 
 
T/F: In a series capacitor circuit, the largest value of capacitance will have the smallest amount of voltage dropped across it. 
True 
 
 
 
T/F: In a series capacitor circuit, the largest value of capacitance will have the largest share of total charge on its plates 
False 
 
 
 
T/F: Magnetic lines of force never cross one another 
True 
 
 
 
T/F: Current flowing through a conductor creates a magnetic fi...
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MRSO Safety Exam with Complete Solutions
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MRSO Safety Exam with Complete Solutions 
 
Slew rate - Answer-Speed at which gradient coil turns on and off 
 
Time-varying Gradient - Answer-Induced current in a patient 
 
Magnetic Flux Lines - Answer-Travel from North to South pole 
 
permanent magnet - Answer-Can not be turned off 
Very inexpensive; extremely heavy 
Approximately 0.4T 
Vertical vector 
 
Resistive magnet - Answer-Can be turned on and off 
Costly due to cooling 
Approximately 0.6T 
Vertical or horizontal vector 
 
Supercond...
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MRI PRACTICE QUESTIONS- SOLVED
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What are two categories that diagnostic imaging contrast depends on? - ANSWER-Intrinsic and Extrinsic parameters 
 
Intrinsic parameters - ANSWER--T1 recovery 
-T2 decay 
-PD 
-Flow 
These cannot be manipulated 
 
Extrinsic parameters - ANSWER--TR 
-TE 
-FA 
-TI 
-b-value 
-echo train 
These can be manipulated by the MRT 
 
Factors that determine T1 and T2 relaxation times of tissue? - ANSWER--the inherent energy of the tissue 
-how closely packed the molecules are 
-how well the molecules tumbl...
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HVAC Electrical Basics Practice Test Questions with Correct Solutions, A+
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Magnetic lines of force flow between _______ of a magnet - North Pole and South Pole 
Resistance is measured in which of the following: - Ohms 
In a three phase supply system, each phase is _______ with each other: - 120 degrees 
Power factor in a normal electrical circuit be ______: - Lagging 
In a series current which of the following quantity remains same: - Current 
Capacitors used in motors will be rated in _______: - Microfarads 
A 4 pole motor runs at ______ rpm: - 36...
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MRI System Component Questions and Answers 100% correct
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MRI System Component Questions and Answers 100% correct 
MRI machines 
vary in both size and shape The older designs 
had a more compact and small space and were very closed 
 
 
 
The scanner hardware required consists of: 
1. A magnet 
2. A radio frequency source 
3.A magnetic field gradient system 
4.A computer system 
5.An image processor 
 
 
 
in the scanner hardware the magnet is for __________________ 
nuclear alignment 
 
 
 
in the scanner hardware the radio frequency source for RF is ...
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ARMRIT review Questions and answers
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T2 is the measurement of time from the transverse component of the NMV to decrease what percentage 
of its max value after the application of a 90 degree RF pulse - 37% 
combining a metal ion with a ligand reduces their tendency to bind proteins, enzymes, or membranes, 
the degree to which they disassociate is a measure of: - toxicity 
in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been 
described as wobbling like a spinning top, this motion is ...
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ASRT test questions on all 12 modules questions with correct answers
- Exam (elaborations) • 34 pages • 2023
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The most common type of magnet used in today's MR systems is the _______________. 
 
A. resistive magnet 
B. permanent magnet 
C. superconducting magnet 
D. open MR scanner CORRECT ANSWER C. superconducting magnet 
 
The positively charged part of an atom is the _____________. 
 
A. electron 
B. neutron 
C. proton 
D. nucleus CORRECT ANSWER C. proton 
 
When a hydrogen nucleus is positively charged and spins, it generates a small magnetic field called a _____________. 
 
A. larmor equation 
B...
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MRSO Safety Exam Guide |UPDATED!!| 100% Correct Answers
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MRSO Safety Exam Guide |UPDATED!!| 
100% Correct Answers 
Slew rate *Ans* Speed at which gradient coil turns on and off 
Time-varying Gradient *Ans* Induced current in a patient 
Magnetic Flux Lines *Ans* Travel from North to South pole 
permanent magnet *Ans* Can not be turned off 
Very inexpensive; extremely heavy 
Approximately 0.4T 
Vertical vector 
Resistive magnet *Ans* Can be turned on and off 
Costly due to cooling 
Approximately 0.6T 
Vertical or horizontal vector 
Superconductive magne...
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ASRT test questions on all 12 modules with veried questions & 100 % correct answers already graded A+
- Exam (elaborations) • 41 pages • 2024
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ASRT test questions on all 12 modules with 
veried questions & 100 % correct answers 
already graded A+ 
The most common type of magnet used in today's MR systems is the _______________. 
A. resistive magnet 
B. permanent magnet 
C. superconducting magnet 
D. open MR scanner - ANSWER>>>>C. superconducting magnet 
The positively charged part of an atom is the _____________. 
A. electron 
B. neutron 
C. proton 
D. nucleus - ANSWER>>>>C. proton 
When a hydrogen nucleus is p...
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