2022 AAPM 64th Annual Meeting
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Session Title: Recent Task Groups on the Use of MR in External Beam Radiotherapy: TG 284 and 294
Question 1: Based on TG-284, what is the recommended testing frequency for the magnetic field homogeneity test?
Reference:Glide-Hurst CK, Paulson ES, McGee K, Tyagi N, Hu Y, Balter J, Bayouth J. Task group 284 report: magnetic resonance imaging simulation in radiotherapy: considerations for clinical implementation, optimization, and quality assurance. Med Phys. 2021 Jul;48(7):e636-e670. doi: 10.1002/mp.14695. PMID: 33386620; PMCID: PMC8761371
Choice A:Only at commissioning of the MR simulator
Choice B:Commissioning, annual and equipment change
Choice C:Monthly
Choice D:Daily
Question 2: Based on TG-284, what is the recommended tolerance for the table movement accuracy?
Reference:Glide-Hurst CK, Paulson ES, McGee K, Tyagi N, Hu Y, Balter J, Bayouth J. Task group 284 report: magnetic resonance imaging simulation in radiotherapy: considerations for clinical implementation, optimization, and quality assurance. Med Phys. 2021 Jul;48(7):e636-e670. doi: 10.1002/mp.14695. PMID: 33386620; PMCID: PMC8761371.
Choice A:± 1.0mm
Choice B:± 2.0mm
Choice C:± 3.0mm
Choice D:No tolerance is recommended
Question 3: What is a key advantage of operating an MR-SIM using the Traditional Operational Model, where personnel work in their professional training capacities?
Reference:Glide-Hurst CK, Paulson ES, McGee K, Tyagi N, Hu Y, Balter J, Bayouth J. Task group 284 report: magnetic resonance imaging simulation in radiotherapy: considerations for clinical implementation, optimization, and quality assurance. Med Phys. 2021 Jul;48(7):e636-e670. doi: 10.1002/mp.14695. PMID: 33386620; PMCID: PMC8761371.
Choice A:MRI technologists understand the process of radiation therapy simulation
Choice B:MRI safety recommendations for American College of Radiology (ACR) are fulfilled using MRI technologists
Choice C:Radiation therapists are familiar with MRI scanning
Choice D:Diagnostic physicists are trained in radiation therapy related quality assurance tasks
Question 4: MRI safety is a critical component of an MR-SIM program. Which of the following is/are recommended for key personnel?
Reference:Glide-Hurst CK, Paulson ES, McGee K, Tyagi N, Hu Y, Balter J, Bayouth J. Task group 284 report: magnetic resonance imaging simulation in radiotherapy: considerations for clinical implementation, optimization, and quality assurance. Med Phys. 2021 Jul;48(7):e636-e670. doi: 10.1002/mp.14695. PMID: 33386620; PMCID: PMC8761371.
Choice A:Formal didactic MRI safety training
Choice B:Proficiency in MRI safety screening
Choice C:Demonstrated and documented clinical competencies
Choice D:All of the above
Question 5: What is the mechanism by which the quantitative imaging biomarker alliance (QIBA) propagates standards for developing quantitative MR biomarkers?
Reference:1. Obuchowski NA, Buckler A, Kinahan P, Chen-Mayer H, Petrick N, Barboriak DP, Bullen J, Barnhart H, Sullivan DC. Statistical Issues in Testing Conformance with the Quantitative Imaging Biomarker Alliance (QIBA) Profile Claims. Acad Radiol. 2016 Apr;23(4):496-506. doi: 10.1016/j.acra.2015.12.020. Epub 2016 Feb 18. PMID: 26898527; PMCID: PMC4831211. 2. Sullivan DC, Obuchowski NA, Kessler LG, Raunig DL, Gatsonis C, Huang EP, Kondratovich M, McShane LM, Reeves AP, Barboriak DP, Guimaraes AR, Wahl RL; RSNA-QIBA Metrology Working Group. Metrology Standards for Quantitative Imaging Biomarkers. Radiology. 2015 Dec;277(3):813-25. doi: 10.1148/radiol.2015142202. Epub 2015 Aug 12. PMID: 26267831; PMCID: PMC4666097.
Choice A:Biomarker profile
Choice B:Peer reviewed literature
Choice C:Standardized imaging protocol
Choice D:Establishing clinical validation
Choice E:RSNA annual meeting
Question 6: What type is defined as a surrogate endpoint when classifying a biomarker?
Reference:R. Frank and R. Hargreaves, Nat Rev Drug Discov 2 (7), 566-580 (2003).
Choice A:0
Choice B:1
Choice C:2
Choice D:3
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