RT 191A Week 02 Ch: 14 Instrumentation
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| DICOM stands for Digital Imaging and Communications in Medicine. True or False? | show 🗑
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| The benefits of using DICOM does not include privacy protection of patient information. True or False? | show 🗑
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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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| show | A. Superconductive magnet
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| A magnetic field strength of 1.5 Tesla equals roughly to __________ Gauss. A. 1,500 B. 0.65 C.150 D.15,000 | show 🗑
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| show | A. Permanent magnet
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| show | C. Permanent magnet
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| show | A. Electromagnet
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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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| Which of the following scanner types is the loudest? A. electromagnet scanners B. permanent magnet C. superconductive magnet | show 🗑
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| Which of the following scanner types requires helium to cool the magnet? A. permanent magnet B. superconductive magnet C. electromagnet scanners | show 🗑
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| rue or False: Magnetic field homogeneity is required to increase the speed of the scan. | show 🗑
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| The amount of inhomogeneity acceptable for a magnetic field in MRI is: A. 4 PPM B. 3.5 PPM C. 2.5 PPM D. 5 PPM | show 🗑
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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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| show | A. Active
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| Gradient coils manipulate B0: A. linearly B. negatively C. exponentially D. positively | show 🗑
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| How many gradient coils does an MRI scanner contain? A. 2 B. 3 C. 1 D. 4 | show 🗑
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| show | B. Gradient field
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| show | D. time taken to change the main magnetic field linearly
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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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| True, or False: An RT transmitter coil transmits an RF pulse into the patient. | show 🗑
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| True or False: A receiver coil can be built into the scanner bore wall. | show 🗑
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