Mr Quiz Questions - Magnets And Scanners

Even if you know your vehicle can maneuver a sharp curve at the legal speed limit, you should still slow down because:CorrectIncorrect. The noise produced during a scan is primarily due to electromechanical vibrations generated by gradients as they are rapidly turned on and off during a pulse sequence. Which of the following is the minimum safe following distance? Where highway construction is taking place. The questions are based on California's DMV Practice Test. When are you not allowed to pass? You must "Slow for the Cone Zone. California Permit Practice Test: DONE - Which of these statements is true about road construction zones. " Zone 4 is includes the scanner, the operator's console, and equipment room (where gradient amplifiers are located). Permanent magnet systems may weigh over 35, 000 pounds (16, 000 kg), over 3 times more than a superconductive scanner. It's illegal to exceed the speed limit when passing. At bore level about 1 meter directly in front of the magnet.

Which Of These Statements Is True About Road Construction Zones Blanches

Driving carefully through work zones improves safety for drivers, pedestrians, bicyclists, and road workers. Reconstruct the raw NMR data into images. In the y-direction (transverse and vertical to the axis bore). The B0 field of an MR scanner is most homogeneous at. A penalty in the maximum number of slices may also occur at constant bandwidth due to the increased time spent in ramping gradients. WHICH OF THESE STATEMENTS IS TRUE ABOUT ROAD CONSTRUCTION ZONES? A. You are responsible for the - Brainly.com. The general public should not be admitted to Zone 1; it is only for MR patients and their families. A common location for RF-leakage into the scanner room is.

Which Of These Statements Is True About Road Construction Zones Map

Gradient coils are an integral part of the MR scanner itself and are not located in a separate equipment room. Where should you start your turn from if you are turning left on a multilane one-way street onto another one-way street? Although potentially uncomfortable for the patient, there is no real risk to hearing. Ferromagnetic objects in Zone 3 are discouraged but not forbidden; they certainly should not be brought near the door of the scanner room. It is responsible for performing Fast Fourier Transformation (FFT) of the raw data and constructing the data into images. The function of the array processor is to. This looks like a pipe mounted within the wall and has a design that it blocks/traps radiofrequencies in the Larmor frequency range from passing through. It is performed by placing heavy copper plates along the walls of the scanner room. Which scanner is the heaviest (and would thus require the most floor support)? You must:CorrectIncorrect. What should you do when you just exited an expressway? Which of these statements is true about road construction zones and routes. Because of the increasing rise and fall times there is a shorter sampling window and SNR is reduced. In most clinical MR sites, the principal source RF-interference that needs to be excluded comes from cell phones, TV, and radio transmissions.

Which Of These Statements Is True About Road Construction Zones And Routes

At the opening (gantry) of the magnet. Other vibration sources include nearby air conditioning equipment, motors, and building elevators. The fringe fields in Zone 3 are sufficiently small that there is no risk for flying ferromagnetic objects to be propelled into the scanner. T2-weighted Turbo spin-echo (TSE) imaging of the spine. Care must be taken when passing because it's extremely difficult to judge the speed of approaching vehicles. In the nearby MR equipment room. Which of these statements is true about road construction zones blanches. If you are unable to see the road ahead while driving because of heavy fog and your wipers do not help, you should:CorrectIncorrect. Because of scanner shielding there is not need for it to be in a remote location (answer d is false). Use of "soft" gradient pulses with longer rise times.

Which Of These Statements Is True About Road Construction Zones Urbaines

Obey all work zone signs until you see a work zone sign stating that the work zone has ended. It is more needed for higher field strength installations, so c) is true. Zone 4 is the scanner room itself, so b) is true and c) is false. When approaching a railroad crossing with no signal lights or crossing gates, you should:CorrectIncorrect. A fringe field line in the scanner room safe for patients but which MR technologists should avoid crossing. You've passed your test! Which of these statements is true about roadwork zones. The array processor is a special board within the main computer that operates the MR scanner. Gradient amplifiers. Check again that the road is clear before passing. You need 84% to pass this test. Passing on the right is permitted only: - when overtaking a vehicle making a left turn. Newer quiet sequences can reduce noise levels to less than 10 dB of background, so answer a) is true.

If one moves from 1 meter to 2 meters away from a magnet, the fringe field will be reduced by a factor of approximately. RF-interference from CB radios should not be a special problem, as these frequencies would normally be filtered out by standard RF-shielding. Where a vehicle is slowing or has stopped to yield the right-of-way to a pedestrian or other vehicle. You should check traffic by:CorrectIncorrect. Ferromagnetic materials should not be brought into Zone 4 as the risk of them being propelled into the scanner is high. Which of these statements is true about road construction zones urbaines. Why should you not tailgate other drivers?

Sun, 28 Jul 2024 21:37:18 +0000