2017 AAPM Annual Meeting
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Session Title: Roles of In-vivo Dose Verification in Radiation Therapy
Question 1: Detectors that are capable to provide real-time in vivo dosimetry data include:
Reference:Mijnheer B, Beddar S, Izewska J, Reft C. Vision 20/20 Article: In vivo dosimetry in external beam radiotherapy. Med Phys 40(7):070903 (19 pages), 7/2013.
Choice A:MOSFETS, PSDs, OSLDs, TLDs and diodes.
Choice B:MOSFETS, PSDs, EPIDs and radiochromic films.
Choice C:MOSFETS, PSDs, EPIDS and diodes.
Choice D:OSLDs, PSDs, EPIDS and RPLDs.
Choice E:C and D.
Question 2: The detectors that are advantageous with regards to energy dependence are:
Reference:Tanderup K, Beddar S, Andersen CE, Kertzscher G, Cygler JE. Vision 20/20 Article: In Vivo Dosimetry in Brachytherapy. Med Phys 40(7):070902 (15 pages), 7/2013.
Choice A:PSDs, MOSFETS, TLDs and diodes.
Choice B:TLDS, MOSFETs and Alanine.
Choice C:PSDs, OSLDs, diodes.
Choice D:PSDs, TLDs and Alanine.
Question 3: Uncertainties in the exact location of the distal range of the proton beam arise from:
Reference:Paganetti, H, Range uncertainties in proton therapy and the role of Monte Carlo simulations, Phys. Med. Biol. 57 (2012) R99-R117.
Choice A:Patient setup.
Choice B:Prescribed fraction dose.
Choice C:Spread Out Bragg Peaks width.
Choice D:Temperature and pressure.
Question 4: Which is not a method of in vivo range verification for proton therapy:
Reference:Knopf and Lomax. In vivo proton range verification: a review, Phys, Med. Biol. 58 (2013) R131-R160.
Choice A:Proton Radiography.
Choice B:Prompt gamma imaging.
Choice C:Post treatment MRI.
Choice D:Optical tomography.
Choice E:Online PET imaging.
Question 5: Brachytherapy in vivo dosimetry uncertainties are normally most influenced by:
Reference:Tanderup K, Beddar S, Andersen CE, Kertzscher G, Cygler JE. Vision 20/20 Article: In Vivo Dosimetry in Brachytherapy. Med Phys 40(7):070902 (15 pages), 7/2013.
Choice A:Energy dependence of the detector.
Choice B:Temperature dependence of the detector.
Choice C:Calibration uncertainties.
Choice D:Uncertainty of detector position.
Question 6: Which of the following is the most frequent source of errors in brachytherapy:
Reference:Reports by the United States Nuclear Regulatory Commission (http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr0090/).
Choice A:Human errors during treatment planning and patient set-up.
Choice B:Afterloader malfunction.
Choice C:Failures in treatment planning commissioning.
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