Welcome to your MRI - A Name [In a TI weighted image, fat has a ______ TI relaxation time and therefore appears ______.] Long, Bright Long, Dark Short, Dark Short, Bright None . [Ancillary equipment that should be included in an MRI department includes which of the following?] Non-ferrous wheelchair or stretcher Proper monitoring equipment for sedated patients A crash cart for emergency situations All of the above None . [Figure is a diagram showing what type of pulse sequence?] Partial saturation Spin echo Inversion recovery Gradient Echo None Comment . [In MRI, thick slices are achieved by applying a ______ gradient slope or a _______ bandwidth.] Shallow, Broad Steep, Narrow Shallow, Narrow None of the above None . [On a TI weighted image of the brain, fat appears ______ to white matter.] Hyperintense Hypointense Isointense None . [The process during the prescan that determines the amount of signal that is received is known as _____.] Center frequency adjustment Transmit gain adjustment Receive attenuation adjustment Impedance matching None . [When the velocity of flow decreases, the effects of entry slice phenomenon] Increase Decrease Stay the same None . [Two types of cardiac gating that are most commonly used are known as______.] Respiratory gating, Respiratory compensation ECG gating, Peripheral gating Pseudo gating, Respiratory gating None of the above None . [In a T2 weighted image, a long TE is used to ______.] Maximize T2 effects Minimize T2 effects Maximize TI effects Minimize TI effects None . [The pulse sequence that performs a series of 180 degree rephasing pulses and echos is known as ______.] Echo planar Inversion recovery Fast spin echo Conventional spin echo None . [Which of the following people developed the complex mathematical formulas used in MRI to reconstruct signals into images?] Michael Faraday Nikola Tesla Niels Bohr Jean Baptiste Joseph Fourier None . [The artifact that is produced by overlapping radio frequency pulses in adjacent slices is known as ______.] Cross excitation artifact Aliasing artifact Truncation artifact Phase mismapping artifact None . [In a gradient coil, the amplitude of the gradient slope is determined by what factor?] The amount of current passing through the coil Transmit bandwidth The strength of the external magnetic field None of the above None . [Which of the following PC MRA techniques provides the highest signal to noise ratio and spacial resolution?] 2D PC MRA 3D PC MRA None . [What type of molecule makes up 50% to 90% of a person's total body weight?] Fat Oxygen Water Nitrogen None . [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 is an example of an intra axial neoplasm?] Acoustic neuroma Meningioma Astrocytoma Both A and B None . [The number of picture elements used to make up an image is known as _______.] Contrast Matrix Signal to noise None of the above None . [Which of the following conventional MR1 techniques can be used to produce contrast differences between vascular structures and stationary structures?] Gradient moment nulling Respiratory compensation Pre-saturation pulse Both A and C None . [How many miliseconds are there in a minute?] 60 600 6,000 60,000 None . Time's up
