Welcome to your MRI - A Name [Coils that are used to transmit and receive radio frequencies are known as _______.] RF coils Shim coils Gradient coils Surface coils None . [Which of the following people developed the most effective way to generate and transmit alternating current and has a magnetic unit of measurement named after him?] Michael Faraday Nikola Tesla Niels Bohr Jean Baptiste Joseph Fourier None . [At a field strength of 1.0 tesla, the approximate TI relaxation time for renal cortex tissue is] 180 ms 270ms 360ms 390ms None . [The first oral MRI contrast agent used in a human subject was known as] Niobium-Titanium Ferric Chloride Ferric Nitrate Gadopentetate dimeglumine None . [The clarity with which different areas of an image are distinguished is known as _______.] Image contrast Signal to noise Spacial resolution None of the above None . [After being placed in an external magnetic field, low energy hydrogen nuclei point in which direction?] Parallel Anti-paired Anti-parallel Perpendicular None . [Which of the following logical gradients is known as the slice selection gradient?] X gradient Y gradient Z gradient None . [The first whole body MRl scanner used by Dr. Raymond Damadian was known as the _______.] Signa Gyroscan Indomitable Abominable None . [Which of the following patients should be monitored with a pulse oximeter during an MRI procedure?] Sedated patients Unconscious patients Patients with weak voices or hearing problems All of the above None . [In a TI weighted image, a short TE is used to ______.] Maximize T2 effects Minimize T2 effects Maximize T I effects Minimize TI effects None . [The Z gradient alters the magnetic field strength along which axis?] Horizontal axis Vertical axis Long axis Short axis None . [Which of the following is an advantage of using a resistive magnet for clinical MRI?] High power consumption Low capital cost Low field strength None of the above None . [In an MRI system, the magnetic field that extends outside the bore of the magnet is known as the _____.] Extended field Outer field Fringe field In field None . [Blood flow that slows to a point of immobility is known as what type of flow?] Turbulent flow Laminar flow Vortex flow Stagnant flow None . [The artifact that is caused by the phase differences between fat and water is known as ______.] Chemical shift Phase wrap Chemical misregistration Ringing None . [The vascular imaging method that maximizes vascular contrast while also suppressing stationary tissue is known as ______.] Magnetic resonance mammography Magnetic resonance angiography Black Blood imaging Zeugmatography None . [When echo time is increased, signal to noise ratio _______.] Increases Decreases Stays the same None . [Blood flow that travels in the opposite direction in which the slices are acquired is known as what type of flow?] Counter current flow Vortex flow Stagnant flow Co-current flow None . [Chemical shift artifact can be minimized by which of the following methods?] Minimizing the FOV Increasing the receive bandwidth Utilizing chemical saturation All of the above None . [Alignment of the net magnetic vector in the direction of the external magnetic field is known as _______.] Transverse magnetization Longitudinal magnetization Equilibrium Both B and C None . Time's up
