| Question 1: Increasing the angular range has which following effect(s): |
| Reference: | Reference: Bushberg, J. T., Seibert, J. A., Leidholdt, E. M., & Boone, J. M. (2021). Breast Imaging: Mammography. In The Essential Physics of Medical Imaging (pp. 284–288). essay, Wolters Kluwer. |
| Choice A: | Longer acquisition time |
| Choice B: | Z-resolution is improved |
| Choice C: | Both (a) and (b) |
| Choice D: | None of the above |
| Question 2: Larger projection density (number of projections per angle) reduces ripple artifacts |
| Reference: | Reference: Machida H, Yuhara T, Mori T, Ueno E, Moribe Y, Sabol JM. Optimizing parameters for flat-panel detector digital tomosynthesis. Radiographics. 2010;30(2):549-562. doi:10.1148/rg.30209509 |
| Choice A: | True |
| Choice B: | False |
| Question 3: According to the ACR QC manual, average glandular dose from an imaging mode that combines a 3D view with a 3D view must meet the following requirement(s) when imaging the ACR DM Phantom: |
| Reference: | https://www.acr.org/-/media/ACR/Files/Clinical-Resources/QC-Manuals/Mammo_QCManual.pdf |
| Choice A: | Total dose from both views <3.0 mGy |
| Choice B: | Both view’s dose (2D and 3D) must have <3.0 mGy each |
| Choice C: | Total dose from both views <6.0 mGy |
| Choice D: | None of the above |
| Question 4: Increasing the number of projections while maintaining a constant total dose does what with respect to quantum noise: |
| Reference: | Sechopoulos, I. (2013), A review of breast tomosynthesis. Part I. The image acquisition process. Med. Phys., 40: 014301. https://doi.org/10.1118/1.4770279 |
| Choice A: | Increases Noise |
| Choice B: | Decreases Noise |
| Choice C: | Stays the same |
| Question 5: Which artifact is of most concern for long acquisition times |
| Reference: | Digital Breast Tomosynthesis: Physics, Artifacts, and Quality Control Considerations
Nikki Tirada, Guang Li, David Dreizin, Luke Robinson, Gauri Khorjekar, Sergio Dromi, and Thomas Ernst
RadioGraphics 2019 39:2, 413-426 |
| Choice A: | Truncation |
| Choice B: | Zipper |
| Choice C: | Ripple |
| Choice D: | Motion |
| Question 6: Which of the following are true regarding synthetic mammograms in comparison to Combo view exposures |
| Reference: | Which of the following are true regarding synthetic mammograms in comparison to Combo view exposures
(I) Dose Reduction
(II) Prone to pseudocalcification, artifacts
(III) Longer acquisition times |
| Choice A: | (I) Only |
| Choice B: | (II) Only |
| Choice C: | (III) Only |
| Choice D: | (I) and (II) |
| Choice E: | (I) and (III) |
