RAD3004 Quiz - Practice questions from the semester PDF

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Practice questions from the semester...

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What is the name of the brain structure located at the standard coordinates of x=0, y=0, z=0? Select one: Corpus callosum Fornix Anterior commissure Posterior commissure Feedback Your answer is correct. The correct answer is: Anterior commissure Question 2 Correct Mark 1.00 out of 1.00

Question text Which of the following images is orientated in the coronial plane?

Select one: Image A Image B Image C Image D Feedback Your answer is correct. The correct answer is: Image B Question 3 Correct Mark 1.00 out of 1.00

Question text Which of the following statements about standard stereotactic coordinates is true? Select one: The right and left hemispheres have positive and negative "z" values respectively

The "z" values of brain regions ventral to the anterior commissure are positive Negative "x" values are located in the right hemisphere of the brain Brain regions caudal to the posterior commissure have negative "y" values Feedback Your answer is correct. The correct answer is: Brain regions caudal to the posterior commissure have negative "y" values Question 4 Incorrect Mark 0.00 out of 1.00

Question text What would be an appropriate orientation label to place in the nominated location of this image? Select one: Caudal Dorsal Rostral Ventral Feedback Your answer is incorrect. The correct answer is: Ventral According to Faraday’s law of induction, the amount of current produced in a loop of wire moving through a magnetic field is proportional to the: Select one: a. Strength of the magnetic field b. Resonance frequency of protons in the wire c. Length of the wire d. Spin density of the wire Feedback Your answer is correct. The correct answer is: Strength of the magnetic field Question 2 Correct Mark 1.00 out of 1.00

Question text In the Larmor Equation, B0 stands for: Select one: a.

Frequency b. Voltage c. Static magnetic field d. Gyromagnetic ratio Feedback Your answer is correct. The correct answer is: Static magnetic field Question 3 Correct Mark 1.00 out of 1.00

Question text A condition whereby there are MORE spins “in line” with the magnetic field than “opposed” is known as: Select one: a. Thermal equilibrium b. High energy c. Low energy d. Excitation Feedback Your answer is correct. The correct answer is: Thermal equilibrium Question 4 Correct Mark 1.00 out of 1.00

Question text During thermal equilibrium, the vector that represents the “spin excess” is known as the: Select one: a. Signal echo (SE) b. Net magnetization vector (NMV) c. Free induction decay (FID) d. Larmor Frequency (LF) Feedback Your answer is correct.

The correct answer is: Net magnetization vector (NMV) Question 5 Correct Mark 1.00 out of 1.00

Question text The RF pulse is applied to achieve a condition known as: Select one: a. Relaxation b. Thermal equilibrium c. Excitation d. Echo time Feedback Your answer is correct. The correct answer is: Excitation Question 6 Correct Mark 1.00 out of 1.00

Question text T1 relaxation time is defined as when: Select one: a. 76% of the longitudinal magnetization has regrown b. 63% of the transverse magnetization has regrown c. 63% of the longitudinal magnetization has regrown d. 37% of the tissue's longitudinal magnetization has regrown Feedback Your answer is correct. The correct answer is: 63% of the longitudinal magnetization has regrown Question 7 Correct Mark 1.00 out of 1.00

Question text T2 relaxation time is defined as when: Select one: a. 63% of the longitudinal magnetization has decayed b. 37% of the tissues longitudinal magnetization has decayed c.

63% of the transverse magnetization has decayed d. 76% of the longitudinal magnetization has decayed Feedback Your answer is correct. The correct answer is: 63% of the transverse magnetization has decayed

Images acquired with SHORT TR and TE values yield images known as: Select one: a. T2 weighted images b. T1 weighted images c. Proton density images d. Diffusion images Feedback Your answer is correct. The correct answer is: T1 weighted images Question 2 Correct Mark 1.00 out of 1.00

Question text Images acquired with LONG TR and TE values yield images known as: Select one: a. T2 weighted images b. T1 weighted images c. Diffusion images d. Proton density images Feedback Your answer is correct. The correct answer is: T2 weighted images Question 3 Correct Mark 1.00 out of 1.00

Question text Images acquired with LONG TR and SHORT TE values yield images known as: Select one: a.

Diffusion images b. T1 weighted images c. T2 weighted images d. Proton density images Feedback Your answer is correct. The correct answer is: Proton density images Question 4 Correct Mark 1.00 out of 1.00

Question text Which of the following is an extrinsic parameter? Select one: a. T2 decay b. Proton density c. Spin-Spin relaxation d. Echo time Feedback Your answer is correct. The correct answer is: Echo time Question 5 Correct Mark 1.00 out of 1.00

Question text Which of the following is an intrinsic parameter Select one: a. T2 decay b. External magnetic field c. TR d. Echo time Feedback Your answer is correct. The correct answer is: T2 decay...