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. Which of the following is the half-life? Reciprocal of the decay constant. Time taken for the number of radioactive nuclei to decrease by a factor of two. Time taken for the number of radioactive nuclei to increase by a factor of two. Decay constant multiplied by the natural logarithm of two. None 2. Which of the following is the principal decay mode of Tc-99m? Beta minus Pair production Isomeric transition Electron capture None 3. Technetium-99m and Technetium-99 are: Isomers Isobars Isotones Isotopes None 4. If the sample volume of a given activity is increased, the counting efficiency of the well counter will: Decrease Approach 0 Not change Increase None 5. 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 None 6. One of two or more different nuclides having the same mass number is called: Isotone Isomer Isotope Isobar None 7. Which of the following radionuclides has the highest kinetic energy of the positron? Rb-82. C-11. F-18. N-13. None 8. Basic algorithms for reconstruction of tomographic images from projection figures include two analytic techniques known as: Filtering and volume rendering techniques Inverse Fourier transform and filtering techniques Filtered backprojection and iterative techniques Filtered backprojection and volume rendering techniques None 9. 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 after collision with another particle or atom The nucleus decays after collision with shielding material The nucleus decays without collision with shielding material The nucleus decays without collision with another particle or atom None 10. Image representation of raw data obtained from projections of the object for image reconstruction is called: Sinogram Blank scan Star artifact Uniformity projections None 1 out of 10 Time's upTime is Up! بواسطة ناصر المطيري|2021-03-31T11:37:09+03:00مارس 31st, 2021|لا توجد تعليقات شارك هذه الصفحة, واترك رأيك حول الموضوع باستخدام وسيلة التواصل التي تناسبك FacebookXLinkedInWhatsAppPinterestEmail عن: ناصر المطيري كبير أخصائيي الطب النووي في مستشفى حفر الباطن المركزي و مؤسس موقع نيوكليرمد. اضف تعليقا إلغاء الردتعليق Δ
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