Question 1: What are the beneficial features of shear wave elastography compared to strain elastography? |
Reference: | EFSUMB guidelines and recommendations on the clinical use of ultrasound elastography. Part 2: Clinical applications, Ultraschall Med. 2013 Jun; 34(3):238-53. Tissue elasticity imaging using ultrasound, Applied Radiology, 40(4): 24-30, 2011.
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Choice A: | Quantitative. |
Choice B: | Less operator dependent. |
Choice C: | Can be used on diffuse diseases. |
Choice D: | All of the above. |
Choice E: | None of the above. |
Question 2: The technical challenge of shear wave elastography includes: |
Reference: | Two-dimensional shear-wave elastography on conventional ultrasound scanners with time-aligned sequential tracking (TAST) and comb-push ultrasound shear elastography (CUSE). IEEE Tran Ultrason Ferroelectr Freq Control. 2015 Feb; 62(2): 290-302.
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Choice A: | Fast attenuation of shear wave. |
Choice B: | Low detection frame rate of line-by-line scanner. |
Choice C: | Both A and B. |
Choice D: | Neither A nor B. |
Question 3: What can cause variability in shear wave elastography measurements? |
Reference: | WFUMB guidelines and recommendations for clinical use of ultrasound elastography: Part 1: basic principles and terminology, Ultrasound Med Biol. 2015 May; 41(5):1126-47.
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Choice A: | Tissue viscosity. |
Choice B: | Probe compression. |
Choice C: | Shear wave reflection at boundaries. |
Choice D: | All of the above. |
Choice E: | None of the above. |
Question 4: The purpose of QIBA is to find ways of assigning numerical values to subjective radiologist interpretations. |
Reference: | QIBA WIKI (definition of quantitative biomarker)
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Choice A: | True. |
Choice B: | False. |
Question 5: A QIBA Profile Contains all of the following except: |
Reference: | QIBA WIKI – profile description and template |
Choice A: | A claim of performance. |
Choice B: | “Actors” – humans assigned to perform various roles outlined in the profile. |
Choice C: | Specific protocols to be followed for patient handling and data acquisition. |
Choice D: | A compliance section. |
Choice E: | Manufacturer specific materials including instructions and specific protocols. |
Question 6: The Ultrasound Shear Wave Speed Biomarker Committee Used Visco-elastic phantoms to test: |
Reference: | QIBA WIKI – profile description and template |
Choice A: | Variation in shear wave speed caused by varying amounts of pressure applied by operators. |
Choice B: | Drift in shear wave speed estimates caused by “aging” of the phantoms. |
Choice C: | Differences in shear wave speed caused by the frequency of the shear waves. |
Choice D: | Accuracy of shear wave speed for estimation of Young’s modulus. |