| Question 1: Apparent diffusion coefficient (ADC) computed from diffusion MRI signals is most likely related to: |
| Reference: | Chen L, Liu M, Bao J, et al. The Correlation between Apparent Diffusion Coefficient and Tumor Cellularity in Patients: A Meta-Analysis. PLoS One. 2013; 8(11):e79008. |
| Choice A: | Proton density. |
| Choice B: | Cerebral blood flow (CBF). |
| Choice C: | Cellularity. |
| Choice D: | Tissue oxygenation level. |
| Question 2: If the maximal diffusion-weighting gradient amplitude is used in a sequence, a higher b-value can lead to: |
| Reference: | Bernstein MA, King KF, and Zhou XJ. “Handbook of MRI Pulse Sequences”. Elsevier Academic Press, San Diego, 2004; Chapter 17.2. |
| Choice A: | Longer TR. |
| Choice B: | Wider receiver bandwidth. |
| Choice C: | Larger matrix size. |
| Choice D: | Longer TE. |
| Question 3: Which MRI technique is NOT used to map blood perfusion in our body? |
| Reference: | Essig M, Shiroishi MS, Nguyen TB, et al. Perfusion MRI: The Five Most Frequently Asked Technical Questions. AJR American journal of roentgenology. 2013;200(1):24-34.
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| Choice A: | Dynamic susceptibility contrast MRI. |
| Choice B: | Dynamic contrast enhanced MRI. |
| Choice C: | Arterial spin labeling MRI. |
| Choice D: | Magnetic resonance angiography. |
| Question 4: Which MRI technique is best for assessing tissue permeability? |
| Reference: | Khalifa F, Soliman A, El-Baz A, et al. Models and methods for analyzing DCE-MRI: a review. Med Phys. 2014 Dec;41(12):124301. |
| Choice A: | Dynamic susceptibility contrast MRI. |
| Choice B: | Dynamic contrast enhanced MRI. |
| Choice C: | Arterial spin labeling MRI. |
| Choice D: | Magnetic resonance angiography. |
| Question 5: Which of the following MRI pulse sequences is most commonly used for fMRI? |
| Reference: | Bandettini PA. Selection of the optimal pulse sequence for functional MRI. In: Jezzard P, Matthews PM, Smith SM, eds. Functional MRI an Introduction to Methods. 1st ed. New York, NY: Oxford University Press; 2001:123-143. |
| Choice A: | T1-weighted conventional spin echo. |
| Choice B: | T2-weighted fast spin echo. |
| Choice C: | T2*-weighted conventional gradient echo. |
| Choice D: | T2*-weighted gradient-echo echo-planar imaging. |
| Question 6: All of the following are MRS localization sequences EXCEPT: |
| Reference: | de Graaf RA. In Vivo NMR Spectroscopy: Principles and Techniques. 2nd ed. Chichester, UK: John Wiley & Sons, Ltd; 2007. doi:10.1002/9780470512968 |
| Choice A: | STEAM |
| Choice B: | VAPOR |
| Choice C: | LASER |
| Choice D: | PRESS |
