Question 1: Which of the following statements will degrade the SBRT treatment accuracy/precision?
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Reference: | Salama J, Kirkpatrick J, Yin F-F. “Stereotactic body radiotherapy treatment of extracranial metastases.” Nature Reviews Clinical Oncology Nov 9(11):654-665 (2012). |
Choice A: | SBRT requires highly conformal dose distribution. |
Choice B: | SBRT requires assessment and management of organ motion. |
Choice C: | SBRT does not need immobilization. |
Choice D: | SBRT typically has less than 5 treatment fractions with high dose per fraction. |
Choice E: | SBRT requires image-guidance for target localization |
Question 2: Which of following statements is not true for SBRT?
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Reference: | Ge H, Cai J, Kelsey C, Yin, F-F. “Quantification and Minimization of Uncertainties of Internal Target Volume (ITV) for Stereotactic-body Radiation Therapy (SBRT) of Lung Cancer.” Int J Radiat Oncol Biology Phys 2013 Feb 1;85(2):438-43 (2012 June Epub ahead of print). |
Choice A: | SBRT treatment can be delivered using multiple 3D conformal beams. |
Choice B: | SBRT treatment can be delivered using either IMRT or VMAT. |
Choice C: | SBRT treatment can be delivered using multiple dynamic conformal arcs. |
Choice D: | 4D CTs always give the true target motion. |
Choice E: | 4D CTs are always used to estimate the true target motion. |
Question 3: According to RTOG protocols, in a lung SBRT planning V20 for lung (percent of lung receiving a dose of 20Gy or above) should be less than:
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Reference: | RTOG protocols 0236, 0618,0813 and 0915
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Choice A: | 5%. |
Choice B: | 10%. |
Choice C: | 15%. |
Choice D: | 20%. |
Choice E: | 30%. |
Question 4: Which of the following answer is the best representation of a 3D intra-fraction target variation in lung SBRT treatment? |
Reference: | C. Shah, L. L. Kestin, A. J. Hope, J. P. Bissonnette, M. Guckenberger, Y. Xiao, J. J. Sonke, J. Belderbos, D. Yan, I. S. Grills, “Required target margins for image-guided lung SBRT: Assessment of target position intrafraction and correction residuals”, Practical Radiation Oncology, 3(1) 67-73, 2013
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Choice A: | <1mm. |
Choice B: | ~2mm. |
Choice C: | ~3mm. |
Choice D: | ~4mm. |
Choice E: | >5mm |
Question 5: ASTRO and ACR SBRT guidelines recommend that the accuracy of image guidance and treatment delivery systems be evaluated |
Reference: | Potters L, et al. “American Society for Therapeutic Radiology and Oncology (ASTRO) and American College of Radiology (ACR) practice guideline for the performance of stereotactic body radiation therapy.” Int J Radiat Oncol Biol Phys. 2010; 76:326–332.
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Choice A: | When Convenient. |
Choice B: | Separately. |
Choice C: | Together. |
Choice D: | By a Radiation Oncologist. |
Question 6: AAPM Task Group Report101 recommends that a qualified physicist.... |
Reference: | Benedict S, et al. “Stereotactic body radiation therapy: The report of AAPM Task Group 101.” Med Phys. 2010; 37:4078–4101.
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Choice A: | Be present from beginning to end of the first SBRT fraction. |
Choice B: | Be available for subsequent fractions. |
Choice C: | Approve the image registration. |
Choice D: | A and B. |
Choice E: | All of the above. |