Questions and Answers
What is one of the advantages of digital radiography mentioned in the text?
Higher spatial resolution
What material is mentioned as being used in the detector fabrication for digital radiography?
Amorphous selenium
What is the role of the protective coating mentioned in the text?
To attenuate the x-rays and protect the detector
What is a disadvantage of digital radiography according to the text?
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What is the material used in the detector fabrication for digital radiography?
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What is one of the disadvantages of digital radiography mentioned in the text?
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What is one of the advantages of digital radiography mentioned in the text?
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What is the role of amorphous selenium in digital radiography?
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What is a feature of the detector fabricated for digital radiography?
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What is the disadvantage of the protective coating mentioned in the text?
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What is the role of the optical filter mentioned in the text?
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What is a characteristic of the digital radiography system mentioned in the text?
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What is the material used in the detector fabrication for digital radiography?
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What is a disadvantage of the protective coating mentioned in the text?
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What is a feature of the detector fabricated for digital radiography?
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What is the role of amorphous selenium in digital radiography?
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What is one of the advantages of digital radiography mentioned in the text?
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What is one of the disadvantages of digital radiography mentioned in the text?
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What is the role of the optical filter mentioned in the text?
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What is a characteristic of the digital radiography system mentioned in the text?
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What is the patient prep for small bowel series?
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Which method is used to increase peristalsis and decrease transit time during small bowel series?
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What is the advantage of enteroclysis over small bowel follow-through?
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What is the disadvantage of enteroclysis?
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What is the procedure for small bowel series after barium ingestion?
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What is the role of gastrografin in small bowel series?
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What is the purpose of the patient laying on the right side during small bowel series?
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What is the condition also known as regional enteritis?
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What is the characteristic of small bowel obstruction mentioned in the text?
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What is the purpose of combining UGI and small bowel series?
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What type of contrast gives better images in body CT scans?
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What is a characteristic of open fractures?
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What is the role of anti-foaming agents in contrast imaging?
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What type of areas appear dark on the image when filled by contrast agents?
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What is the main reason for adding suspending agents to contrast media?
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What is the purpose of an ideal intravascular contrast agent?
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What happens to ionic contrast when dissolved in a solution?
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What is the main reason for adding an anti-foaming agent to contrast media?
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What is the impact of high viscosity on contrast flow?
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What is the main characteristic of an ideal intravascular contrast agent?
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What is a characteristic of non-ionic contrast agents?
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What factors can affect the position of the gas pattern in small bowel obstruction?
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How can peristalsis be increased?
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What can be involved in patient preparation for abdominal x-ray procedures?
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What is required for a barium swallow for the gastrointestinal tract?
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What can cause abnormal structures in the esophagus?
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What can cause esophagitis?
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Who is esophageal cancer common in?
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What are Zenker's diverticulum and achalasia characterized by?
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What are the dimensions of the small bowel and large intestine mentioned in the text?
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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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