Physics A multiple-choice quiz consists of: 10 QuestionsQuestions are selected randomly from a collection of 20 questions. More Questions You will get deferent questions every time you take the quiz. Correct AnswersThere could be more than one correct answer, select all that apply.Skip QuestionsYou are allowed to scroll backward and forward before submitting your answers.10 MinutesThe quiz has a time limit. Time's up You can still submit your answers after the allowed period of time has ended . When ready, click Next to start the quiz. Name (Required) Email (Optional) Twitter (Optional) 1. When only image quality is considered, the best possible distance between the collimator and the patient’s body for a gamma-camera equipped with HRES collimator is: 10 cm Half the collimator diameter 1 in Contact 2. Dual time-point imaging (DTPI) can improve accuracy of positron emission tomography (PET) imaging. DTPI technique is a specialized protocol in which: Delay imaging is performed Dual-isotope technique is applied Two days delay imaging is performed Flow study is performed followed by static imaging 3. An alpha particle is identical to the nucleus of a helium atom. Alpha particles: Travel unlimited distances Are used for radionuclide therapy Are not charged Are smaller than beta particles 4. Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting ionizing radiation. The emission is described as spontaneous meaning: The nucleus decays without collision with shielding material The nucleus decays after collision with shielding material The nucleus decays after collision with another particle or atom The nucleus decays without collision with another particle or atom 5. Which of the following sentences correctly describes a positron? A particle having a mass equal to the proton and no charge A particle having a mass equal to the electron and no charge A particle having a mass equal to the proton but opposite charge A particle having a mass equal to the electron but opposite charge 6. Which of the following is the half-life? Time taken for the number of radioactive nuclei to decrease by a factor of two. Reciprocal of the decay constant. Time taken for the number of radioactive nuclei to increase by a factor of two. Decay constant multiplied by the natural logarithm of two. 7. The nucleus is composed of two types of particles called: Protons and electrons Quarks and protons Electrons and quarks Neutrons and protons 8. Elements with same atomic number and different atomic mass number are called? Isotopes Isomers Isotones Isobars 9. Technetium-99m and Technetium-99 are: Isotones Isobars Isotopes Isomers 10. Which of the following best defines isotopes of an element? Atoms with same number of neutrons and electrons but different number of protons. Atoms with same number of protons and neutrons but different number of electrons. Atoms with same number of protons, electrons and neutrons. Atoms with same number of protons and electrons but different number of neutrons. 1 out of 10 Time's upTime is Up! By Nasser AlMutairi|2021-03-31T11:37:09+03:00March 31st, 2021| Share This Post With Others! FacebookXLinkedInWhatsAppPinterestEmail About the Author: Nasser AlMutairi Senior Nuclear Medicine Specialist at Hafar Al-Batin Central Hospital, Founder of NuclearMed Website. Leave a ReplyCancel reply
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