اختبار: الحماية من الأشعة A multiple-choice quiz consists of: 10 QuestionsQuestions are selected randomly from a collection of 40 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 subsequent biologic effect resulting from acute whole body exposure to 0.25 Sievert? Erythema (redness) Decreased lymphocytes 50% chance of death Nausea and diarrheas None 2. Which of the following are the 3 basic principles to reduce external exposure to radiation? Minimize time, minimize distance, and use shielding Maximize time, maximize distance, and use shielding Minimize time, maximize distance, and use collimator Minimize time, maximize distance, and use shielding None 3. All of the following are recommended means of reducing radiation exposure EXCEPT Applying shielding Limitation of time Wearing film badge Use of remote handling devices None 4. The survey meter, also known as the Geiger-Mueller detector or Geiger counter, is a radiation detector filled with: Lead Gas Scintillation crystals Water None 5. Which of the following diagnostic examinations will deliver the smallest estimated dose to the fetus? Abdomen CT Pelvis X-ray Lung perfusion scan Interventional fluoroscopically guided procedures None 6. The major types of radiation listed by decreasing mass are: α, ɣ, ß α, ß, ɣ ɣ, α, ß ɣ, ß, α None 7. The relationship that states that electromagnetic radiation intensity is inversely proportional to the square of the distance from a point source is called: Inverse square protection Inverse square rule Inverse square law Inverse square principle None 8. A radioactive source produces exposure of 30 millirem per hour (mR/h) at 2-m distance. If the distance is increased to 5-m what is the new exposure rate? 5.1 mR/h 4.8 mR/h 6.1 mR/h 5.6 mR/h None 9. Which of the following is the maximum dose limit for a pregnant radiographer per month? 0.5 mSv. 10 Roentgen. 5 Roentgen. 10 Rem. None 10. According to the criteria defining unrestricted areas and listed in Nuclear Regulatory Commission-10 Code of Federal Regulations (NRC-10CFR) Part 20 Section 1301, all licensees must perform procedures so that a dose in any unrestricted area does not exceed: 0.001 rem in any 1 hour 0.004 rem in any 1 hour 0.002 rem in any 1 hour 0.005 rem in any 1 hour None 1 out of 10 Time's upTime is Up! بواسطة ناصر المطيري|2021-09-20T14:26:56+03:00أبريل 15th, 2021|السلامة من الإشعاع|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. منشورات متعلقة اختبار: وحدات و كميات الأشعة الأساسية اختبار: وحدات و كميات الأشعة الأساسية أبريل 15th, 2021 | لا توجد تعليقات اضف تعليقا إلغاء الردتعليق أعلمني بمتابعة التعليقات بواسطة البريد الإلكتروني. أعلمني بالمواضيع الجديدة بواسطة البريد الإلكتروني. Δ
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