Immune system A multiple-choice quiz consists of: 10 QuestionsQuestions are selected randomly from a collection of 14 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. Images obtained shortly after injection of leukocytes labeled with In-111 or Tc-99m are characterized by intense pulmonary activity that clears and approaches background level by: 0.5 hour after injection. 2 hours after injection. 4 hours after injection. 1 hour after injection. 2. All of the following scintigraphic methods are often used in the diagnosis of fever of unknown origin (FUO) EXCEPT Labeled erythrocytes scintigraphy Ga-67 citrate scintigraphy Fluorodeoxyglucose-positron emission tomography (FDG-PET) Labeled leukocytes scintigraphy 3. Tc-99m-labeled leukocytes and Tc-99m sulfur colloid accumulate in the reticuloendothelial cells of the bone marrow. The distribution of marrow activity is similar for both radiopharmaceuticals with the exception of an acute or chronic bone infection. Osteomyelitis: Stimulates uptake of leukocytes but does not affect uptake of sulfur colloid. Stimulates uptake of sulfur colloid but does not affect uptake of leukocytes. Stimulates uptake of leukocytes but suppresses uptake of sulfur colloid. Stimulates uptake of sulfur colloid but suppresses uptake of leukocytes. 4. Images obtained shortly after injection of white blood cells labeled with In-111 or Tc-99m are characterized by intense activity-up to 4 hours, but disappearing prior to 24 hours imaging-pulmonary activity. This phenomenon is caused by the fact that: The pulmonary capillaries have an average diameter bigger than that of neutrophils. Activated neutrophils adhere to the pulmonary capillaries for a longer period than do nonactivated neutrophils. The mean driving pressure across the pulmonary circulation is higher than that in the systemic circulation. During the labeling procedure, neutrophils are deformed and became bigger. 5. Tc-99m and In-111-labeled leukocyte imaging (WBC) are established procedures for diagnosing inflammation and infection. All of the following wounds appear as areas of intense activity on WBC images EXCEPT: Skin grafts wounds. Tracheostomies wounds. Surgical incision wounds. Ileostomies wounds. 6. Human antimurine antibody (HAMA) is being produced when: A human immunoglobulin is injected into a human. A humane immunoglobulin is injected into a mouse. A murine immunoglobulin is injected into a human. A murine immunoglobulin is injected into a mouse. 7. An organ that removes old red blood cells, holds a reserve of blood in case of hemorrhagic shock, and synthesizes antibodies in its white pulp is called: The liver. The spleen. The thymus. Bone marrow. 8. In which of the following causes of fever of unknown origin (FUO) diagnostic leukocyte scintigraphy may be especially valuable? Systemic rheumatic disease Infection Granulomatous disorder Neoplasm 9. Fever of unknown origin (FUO) can be caused by all of the following disorders/factors EXCEPT: Drugs. Stress. Neoplasm. Infection. 10. Flow imaging is an essential part of all of the following nuclear medicine procedures EXCEPT: Tagged white blood cells for osteomyelitis diagnosis 3-Phase bone scan for osteomyelitis diagnosis Tagged red blood cells (RBCs) for liver hemangioma imaging Tc-99m pertechnetate for brain death scintigraphy 1 out of 10 Time is Up! Time's up By Nasser AlMutairi|2021-03-31T14:32:35+03:00March 31st, 2021| Share This Post With Others! FacebookTwitterLinkedInWhatsAppPinterestEmail 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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