RT 191A Week 02 Ch: 14 Instrumentation
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| DICOM stands for Digital Imaging and Communications in Medicine. True or False? | show 🗑
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| show | FALSE
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| show | C & D. Low field magnets are advantageous becausae they have low operating costs, and are better for claustrophobic patients.
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| Which of the following requires a cryostat? A. superconductive magnet B. low field magnet C. permanent magnet D. electromagnet scanners | show 🗑
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| show | D. 15,00 Gauss = 1.5T
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| show | A. Permanent magnet
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| show | C. Permanent magnet
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| Which of the following scanner types can be unplugged? A. electromagnet scanners B. permanent magnet C. super conductive magnet | show 🗑
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| Which of the following scanner types has a limited field strength because the field strength is limited to how much electricity can flow through a wire? A. electromagnet scanners B. permanent magnet C. superconductive magnet | show 🗑
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| show | C. Superconductive magnet
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| show | B. Superconductive magnet
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| rue or False: Magnetic field homogeneity is required to increase the speed of the scan. | show 🗑
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| show | B. 3.5 ppm
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| The process of installing metal plates within the walls of the MRI scanner to homogenize the magnetic field is called: A. passive shielding B. active shimming C.passive shimming D. active shielding | show 🗑
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| An MRI Technologist can perform which type of shimming? A. active B. passive | show 🗑
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| Gradient coils manipulate B0: A. linearly B. negatively C. exponentially D. positively | show 🗑
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| show | B.3
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| Gradient coils generate a magnetic field called a(n): A. RF field B. gradient field C. static field D. linear field | show 🗑
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| Gradient rise time indicates: A. time taken to physically raise the gradients B. time taken to reach 100% strength C. reach max gradient strength D. time taken to change the main magnetic field linearly | show 🗑
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| Select all that apply... An RF pulse does which of the following tasks: A. prevents claustrophobia B. puts hydrogens into the same phase C. puts hydrogens into the same frequency D. excites hydrogen atoms | show 🗑
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| show | TRUE
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| show | FALSE
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