2020 Joint AAPM | COMP Virtual Meeting
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Session Title: Physics Requirements for Implementing a Radiopharmaceutical Therapy (RPT) Program
Question 1: 1. Which of the following are alternate terms for radiopharmaceutical therapy?
Reference:Jadvar H, et al. Radiotheranostics in Cancer Diagnosis and Management. Radiology 2018; 286(2): 388-400.
Choice A:Molecular Targeted Radiotherapy
Choice B:Radiotheranostics
Choice C:Radionuclide Therapy
Choice D:All of the Above
Question 2: Duties of an Authorized User include which of the following?
Reference:Mettler FA Jr. and Guiberteau MJ. Essentials of Nuclear Medicine and Molecular Imaging, 7th Edition, 2019, Elsevier, Philadelphia, Chapter 13, pp. 382-401.
Choice A:Written directive
Choice B:Administration of the radiopharmaceutical
Choice C:Record keeping
Choice D:All of the above
Question 3: If a patient therapy is cancelled, which of the following cannot typically be decayed-in-storage? (Hint: One of these carries a radionuclidic impurity)
Reference:U.S. NRC 10 CFR 35.92, https://www.nrc.gov/reading-rm/doc-collections/cfr/part035/part035-0092.html
Choice A:90Y-microspheres
Choice B:131I-MIBG
Choice C:177Lu-DOTATATE
Choice D:223Ra dichloride
Question 4: Which of the following RPTs requires the most shielding during storage and administration?
Reference:Smith DS, Stabin MG. Exposure rate constants and lead shielding values for over 1,100 radionuclides. Health physics. 2012 Mar 1;102(3):271-91.
Choice A:90Y-microspheres
Choice B:131I-MIBG
Choice C:177Lu-DOTATATE
Choice D:223Ra dichloride
Question 5: Radiopharmaceutical therapy dosimetry consists of:
Reference:Loevinger R, Budinger TF, Watson EE. MIRD Primer for Absorbed Dose Calculation. New York Society of Nuclear Medicine, 1988.
Choice A:Calculation of whole organ absorbed dose for prospective treatment planning and constraints on normal organ toxicity
Choice B:Calculation of tumor absorbed dose for retrospective dose-response studies
Choice C:Use of radiobiological, pharmacokinetic and small scale anatomical modeling
Choice D:All of the above
Question 6: Added concerns and complications for targeted alpha-particle dosimetry over traditional beta-particle RPT dosimetry include:
Reference:Sgouros G, Roeske, JC, McDevitt MR, Palm S, Allen BJ, Fisher, DR, H Song, RW Howell, G Akabani. MIRD Pamphlet No. 22 (Abridged): Radiobiology and Dosimetry of Alpha-Particle Emitters for Targeted Radionuclide Therapy. J Nucl Med. 2010 Feb;51(2):311-28.
Choice A:A different biological response to dose (the RBE)
Choice B:Low count rates in nuclear medicine imaging due to low amounts of administered activity
Choice C:The short range of energy deposition can lead to localized dose distributions below the imaging resolution of SPECT or PET
Choice D:Daughter isotopes are often radioactive, resulting in additional pharmacokinetics, distributions of activity, and dose
Choice E:All of the above
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