Question 1: In robotic Cyberknife spine SBRT treatment setups, imaging guidance is provided via.... |
Reference: | AAPM TG135 Med Phys. 2011 Jun;38(6):2914-36. |
Choice A: | MV cone-beam CT. |
Choice B: | kV stereoscopic imaging. |
Choice C: | MV cone-beam CT. |
Choice D: | MV stereoscopic imaging. |
Question 2: Spinal cord tolerance for spine SBRT can be appropriately specified as: |
Reference: | “Response assessment after stereotactic body radiotherapy for spinal metastasis: a report from the SPIne response assessment in Neuro-Oncology (SPINO) group” Lancet Oncol. 2015 Dec;16(16):e595-603. doi: 10.1016/S1470-2045(15)00166-7. |
Choice A: | D(max) |
Choice B: | D(1.0 cc) |
Choice C: | D(3.0 cc) |
Choice D: | D(5.0 cc) |
Question 3: What is the single fraction maximum dose limit to the thecal sac for spine SRS?
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Reference: | (10 Gy. Radiation Myelopathy has been observed above 10 Gy in some cases. Lowers dose limits for myelopathy were observed with cyberknife versus linac) |
Choice A: | 8 Gy |
Choice B: | 10 Gy |
Choice C: | 12 Gy |
Choice D: | 14 Gy |
Choice E: | 16 Gy |
Question 4: What is the primary advantage of spine SRS over conventional spine fractionated treatments?
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Reference: | (Increase local control. While the other answers have been demonstrated in some patient cohorts, they are not generally expected. )
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Choice A: | Better pain control. |
Choice B: | Reduced bone fracture risk. |
Choice C: | Reduced myelopathy risk. |
Choice D: | Increased local control. |
Choice E: | Reduced late toxicities. |
Question 5: A physical model created for intracranial SRS treatments for multiple (1-60) brain metastases with the Gamma Knife Perfexion found that the increases in the 12 Gy peripheral dose volume were correlated with which?
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Reference: | A. Sahgal, et al., Prescription Dose guidelines based on physical criterion for multiple metastastic brain tumors treated with stereotactic radiosurgery, IJROBP 78 (2010), 605-608. |
Choice A: | The total volume of tumors treated. |
Choice B: | The total number of tumors treated. |
Choice C: | The number of tumors with volume > 1.0 cm3. |
Choice D: | A single tumor with volume > 4.0 cm3. |
Choice E: | All of the above. |
Question 6: Studies published to date that specifically investigate the radiosurgical tolerance of the optic apparatus represent level III evidence. |
Reference: | J. Sheehan, et al., Chapter 11: Optic Apparatus Tolerance up to 8 Gy, in Controversies in Stereotactic Radiosurgery, J. Sheehan, P. Gerszten ed., Thieme, 2014.
Source 2: J. Flickinger, et al., Chapter 12: Optic Apparatus Tolerance Greater than 8 Gy, in Controversies in Stereotactic Radiosurgery, J. Sheehan, P. Gerszten ed., Thieme, 2014.
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Choice A: | True. |
Choice B: | False. |