Digital Radiography Quiz
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Questions and Answers

What is one of the advantages of digital radiography mentioned in the text?

  • Higher spatial resolution (correct)
  • Lower cost compared to traditional radiography
  • Less complex and easier to operate
  • Improved mechanical features

    • What material is mentioned as being used in the detector fabrication for digital radiography?

  • Aluminum oxide
  • Silicon carbide
  • Copper
  • Amorphous selenium (correct)

    • What is the role of the protective coating mentioned in the text?

  • To attenuate the x-rays and protect the detector (correct)
  • To reduce the cost of the system
  • To amplify the electrical signals
  • To enhance spatial resolution

    • What is a disadvantage of digital radiography according to the text?

    <p>Complex and expensive</p> Signup and view all the answers

    What is the material used in the detector fabrication for digital radiography?

    <p>Amorphous selenium</p> Signup and view all the answers

    What is one of the disadvantages of digital radiography mentioned in the text?

    <p>Complex and expensive</p> Signup and view all the answers

    What is one of the advantages of digital radiography mentioned in the text?

    <p>Amorphous selenium detector</p> Signup and view all the answers

    What is the role of amorphous selenium in digital radiography?

    <p>Absorbs and attenuates x-rays</p> Signup and view all the answers

    What is a feature of the detector fabricated for digital radiography?

    <p>Thinfilm manufactured</p> Signup and view all the answers

    What is the disadvantage of the protective coating mentioned in the text?

    <p>Absorbs and attenuates x-rays</p> Signup and view all the answers

    What is the role of the optical filter mentioned in the text?

    <p>Attenuates x-rays</p> Signup and view all the answers

    What is a characteristic of the digital radiography system mentioned in the text?

    <p>E.FIsfEI259YnInorcxraytnatwin</p> Signup and view all the answers

    What is the material used in the detector fabrication for digital radiography?

    <p>Amorphous selenium</p> Signup and view all the answers

    What is a disadvantage of the protective coating mentioned in the text?

    <p>Inhibits image quality</p> Signup and view all the answers

    What is a feature of the detector fabricated for digital radiography?

    <p>Thinfilm deposition technology</p> Signup and view all the answers

    What is the role of amorphous selenium in digital radiography?

    <p>Absorbs and attenuates x-rays</p> Signup and view all the answers

    What is one of the advantages of digital radiography mentioned in the text?

    <p>Precise image capture</p> Signup and view all the answers

    What is one of the disadvantages of digital radiography mentioned in the text?

    <p>Complex and expensive</p> Signup and view all the answers

    What is the role of the optical filter mentioned in the text?

    <p>Attenuates x-rays</p> Signup and view all the answers

    What is a characteristic of the digital radiography system mentioned in the text?

    <p>Thinfilm deposition technology</p> Signup and view all the answers

    What is the patient prep for small bowel series?

    <p>NPO for 8 hours</p> Signup and view all the answers

    Which method is used to increase peristalsis and decrease transit time during small bowel series?

    <p>Glass of ice water</p> Signup and view all the answers

    What is the advantage of enteroclysis over small bowel follow-through?

    <p>Better visualization of small bowel</p> Signup and view all the answers

    What is the disadvantage of enteroclysis?

    <p>Increased patient discomfort</p> Signup and view all the answers

    What is the procedure for small bowel series after barium ingestion?

    <p>Wait 30 minutes for the image</p> Signup and view all the answers

    What is the role of gastrografin in small bowel series?

    <p>Decreases viscosity of barium</p> Signup and view all the answers

    What is the purpose of the patient laying on the right side during small bowel series?

    <p>To empty the stomach faster</p> Signup and view all the answers

    What is the condition also known as regional enteritis?

    <p>Crohn's disease</p> Signup and view all the answers

    What is the characteristic of small bowel obstruction mentioned in the text?

    <p>It has a step ladder pattern</p> Signup and view all the answers

    What is the purpose of combining UGI and small bowel series?

    <p>To examine the small intestine</p> Signup and view all the answers

    What type of contrast gives better images in body CT scans?

    <p>Inherent natural contrast</p> Signup and view all the answers

    What is a characteristic of open fractures?

    <p>Bone is exposed to the outside</p> Signup and view all the answers

    What is the role of anti-foaming agents in contrast imaging?

    <p>Adding to avoid the creation of small air bubbles that may mimic pathology</p> Signup and view all the answers

    What type of areas appear dark on the image when filled by contrast agents?

    <p>Anatomic areas filled by negative contrast</p> Signup and view all the answers

    What is the main reason for adding suspending agents to contrast media?

    <p>To prevent flocculation</p> Signup and view all the answers

    What is the purpose of an ideal intravascular contrast agent?

    <p>To be readily excreted by the kidneys</p> Signup and view all the answers

    What happens to ionic contrast when dissolved in a solution?

    <p>Ionics dissolve into two charged particles</p> Signup and view all the answers

    What is the main reason for adding an anti-foaming agent to contrast media?

    <p>To avoid the creation of small air bubbles that may mimic pathology</p> Signup and view all the answers

    What is the impact of high viscosity on contrast flow?

    <p>Flows more slowly</p> Signup and view all the answers

    What is the main characteristic of an ideal intravascular contrast agent?

    <p>Low toxicity</p> Signup and view all the answers

    What is a characteristic of non-ionic contrast agents?

    <p>They result in fewer particles with no charge</p> Signup and view all the answers

    What factors can affect the position of the gas pattern in small bowel obstruction?

    <p>Position and respiration</p> Signup and view all the answers

    How can peristalsis be increased?

    <p>Using Buscopan, Glucagon, or Maxolon</p> Signup and view all the answers

    What can be involved in patient preparation for abdominal x-ray procedures?

    <p>Clear fluid diets, laxatives, or enemas</p> Signup and view all the answers

    What is required for a barium swallow for the gastrointestinal tract?

    <p>Patient preparation, an examination in an erect position, and various techniques</p> Signup and view all the answers

    What can cause abnormal structures in the esophagus?

    <p>Extrinsic or intrinsic pressure</p> Signup and view all the answers

    What can cause esophagitis?

    <p>Reflux of gastric content, prolonged vomiting, incompetent LES, or irritant foods</p> Signup and view all the answers

    Who is esophageal cancer common in?

    <p>Males aged 50-70</p> Signup and view all the answers

    What are Zenker's diverticulum and achalasia characterized by?

    <p>Specific symptoms and treatments</p> Signup and view all the answers

    What are the dimensions of the small bowel and large intestine mentioned in the text?

    <p>Approximately 7m in length with a diameter of 3.8cm proximally and 2.5 cm distally</p> Signup and view all the answers

    Study Notes

    Diagnostic Imaging and Patient Preparation Summary

    • Non-ionic contrast agents do not dissociate in solution and result in fewer particles with no charge, leading to fewer adverse reactions, lower toxicity, and the same opacity as ionic contrast.
    • Factors affecting the position of the gas pattern in small bowel obstruction include body habitus, position, respiration, fullness, muscle tone, fat deposit, and pregnancy.
    • Peristalsis can be increased by using Buscopan, Glucagon, or Maxolon, with each having different side effects and advantages.
    • Patient preparation for abdominal x-ray procedures can involve clear fluid diets, laxatives, or enemas, each serving different purposes in cleansing the bowel and preparing for the examination.
    • A barium swallow for the gastrointestinal tract requires patient preparation, an examination in an erect position, and various techniques for demonstrating esophageal reflux and varices.
    • Abnormal structures in the esophagus can be caused by extrinsic or intrinsic pressure, leading to symptoms such as dysphagia, heartburn, and potential complications like esophagitis or esophageal cancer.
    • Esophagitis can be caused by reflux of gastric content, prolonged vomiting, incompetent LES, or irritant foods, and may result in Schatzki's rings forming due to long exposure.
    • Esophageal cancer is common in males aged 50-70, with a low survival rate, and may require photodynamic therapy or other treatments depending on the progression and stage.
    • Zenker's diverticulum and achalasia are characterized by specific symptoms and treatments, such as laser-activated chemicals for Zenker's diverticulum or balloon dilation and surgery for achalasia.
    • Small bowel is approximately 7m in length with a diameter of 3.8cm proximally and 2.5 cm distally, and the large intestine begins in the right lower quadrant at the ileocecal valve.

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    Description

    Test your knowledge of digital radiography with this quiz. Explore topics such as general advantages and disadvantages, spatial resolution, and the use of protective coatings in the system. See how much you know about this important technology in the medical field.

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