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Author Question: Which of the following would be a positive contrast agent with a high atomic number administered to ... (Read 22 times)

altibaby

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on: Jul 17, 2018
Which of the following would be a positive contrast agent with a high atomic number administered to a patient?
 
 air
  radiopaque contrast
  radiolucent contrast
  transparent contrast

Question 2

Increased oxygenation of a cell will cause:
 
 increased reproduction
  decreased sensitivity
  increased sensitivity
  no effect


Sassygurl126

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Reply #1 on: Jul 17, 2018
Answer to Question 1

radiopaque contrast

Rationale: A radiopaque contrast is a positive agent that has a high atomic number. Radiopaque contrast agents could be barium or iodinated contrast. The contrast will appear white on the radiograph.

Answer to Question 2

increased sensitivity

Rationale: A greater amount of oxygen in tissues increases their radiosensitivity. The Oxygen Enhancement Ratio is determined by comparing the dose required to cause effect with and without oxygen.


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