Use of iodine-based agents MCQs

What is the primary purpose of iodine-based contrast agents in medical imaging?
- A) To reduce patient anxiety
- B) To enhance the visibility of internal structures
- C) To provide sedation
- D) To replace X-rays
Which imaging modality commonly uses iodine-based contrast agents?
- A) MRI
- B) CT scans
- C) Ultrasound
- D) X-ray
What is the main risk associated with the use of iodine-based contrast agents?
- A) Radiation exposure
- B) Allergic reactions
- C) Infection
- D) Inflammation
Which of the following is a common side effect of iodine-based contrast agents?
- A) Nausea
- B) Hair loss
- C) Headache
- D) Fever
In what scenario is the use of iodine-based contrast agents contraindicated?
- A) Known allergy to iodine
- B) Pregnancy
- C) Diabetes
- D) High blood pressure
What type of iodine-based contrast agent is typically used for CT scans?
- A) Iodine solutions
- B) Ionic and non-ionic agents
- C) Radioactive isotopes
- D) MRI contrast agents
How are iodine-based contrast agents typically administered?
- A) Oral ingestion
- B) Intravenous injection
- C) Inhalation
- D) Topical application
What is the significance of osmolality in iodine-based contrast agents?
- A) It affects patient tolerance and side effects
- B) It determines the color of the agent
- C) It influences the imaging quality
- D) It impacts the cost of the agent
Which of the following factors can increase the risk of adverse reactions to iodine-based contrast agents?
- A) Age
- B) History of asthma
- C) Weight
- D) Gender
What should patients be advised to do after receiving iodine-based contrast agents?
- A) Fast for 24 hours
- B) Drink plenty of fluids
- C) Avoid physical activity
- D) Take pain relievers
Which of the following is an indication for the use of iodine-based contrast in imaging?
- A) Evaluating vascular structures
- B) Assessing bone density
- C) Visualizing soft tissues
- D) Diagnosing infections
What is the difference between ionic and non-ionic iodine-based contrast agents?
- A) Ionic agents have higher osmolality
- B) Non-ionic agents are less expensive
- C) Ionic agents provide better imaging
- D) Non-ionic agents are used only in emergencies
What is a potential consequence of administering iodine-based contrast agents in patients with kidney impairment?
- A) Enhanced imaging quality
- B) Contrast-induced nephropathy
- C) Reduced allergic reactions
- D) Increased blood pressure
What type of imaging would most likely require the use of iodine-based contrast?
- A) Plain X-ray
- B) CT Angiography
- C) Ultrasound
- D) MRI
Which patient condition requires special consideration before using iodine-based contrast?
- A) Hyperthyroidism
- B) Anemia
- C) Hypertension
- D) Osteoporosis
What is the main component of iodine-based contrast agents?
- A) Barium
- B) Iodine
- C) Calcium
- D) Phosphorus
What is a common alternative to iodine-based contrast agents for patients with allergies?
- A) Barium sulfate
- B) Gadolinium-based agents
- C) MRI contrast
- D) Water-soluble agents
Which of the following procedures would likely involve the use of iodine-based contrast agents?
- A) Coronary angiography
- B) Bone densitometry
- C) Electrocardiogram
- D) Spirometry
What is the role of iodine in the body after administration of iodine-based contrast agents?
- A) It is stored in fat cells
- B) It is primarily excreted through urine
- C) It enhances metabolism
- D) It accumulates in the liver
Which imaging study is least likely to use iodine-based contrast agents?
- A) CT of the abdomen
- B) Ultrasound of the abdomen
- C) CT of the chest
- D) Angiography
How can the risk of allergic reactions to iodine-based contrast agents be minimized?
- A) Increase the dosage
- B) Pre-medication with steroids and antihistamines
- C) Use of higher osmolality agents
- D) Administer the agent faster
What is the appropriate action if a patient experiences an allergic reaction to iodine-based contrast?
- A) Ignore symptoms
- B) Provide immediate medical attention
- C) Wait for symptoms to subside
- D) Administer more contrast
What is a potential effect of iodine-based contrast agents on thyroid function?
- A) Suppression of thyroid hormone production
- B) Stimulation of thyroid function
- C) No effect
- D) Increased hormone secretion
Which of the following is a characteristic of low-osmolar contrast agents?
- A) Higher rate of side effects
- B) Lower incidence of adverse reactions
- C) More expensive
- D) Poor image quality
What should be assessed before administering iodine-based contrast agents?
- A) Patient’s height
- B) Patient’s allergy history
- C) Previous surgeries
- D) Family medical history
What is the function of iodine in the imaging process?
- A) To enhance sound waves
- B) To absorb X-rays
- C) To provide contrast
- D) To induce sedation
In which patient population is iodine-based contrast used cautiously?
- A) Healthy adults
- B) Diabetic patients
- C) Children
- D) Pregnant women
What is the first-line treatment for a patient with anaphylactic shock due to iodine-based contrast?
- A) Epinephrine
- B) Antihistamines
- C) Steroids
- D) Saline infusion
What imaging technique can help visualize vascular structures using iodine-based contrast?
- A) MRI
- B) CT Angiography
- C) X-ray fluoroscopy
- D) Ultrasound
What should be done if a patient has a history of contrast allergy?
- A) Consider alternative imaging methods
- B) Administer the contrast with no precautions
- C) Increase the dose
- D) Perform the procedure without consulting a physician

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