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Imaging 1 Foundations Quiz
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Imaging 1 Foundations Quiz

Created by
@GratefulHyperbolic

Questions and Answers

What is a major advantage of chest radiographs compared to computed tomography (CT)?

  • CT provides higher spatial resolution.
  • CT is cheaper than chest radiographs.
  • Chest radiographs can be performed at the bedside. (correct)
  • Radiographs use less radiation than CT. (correct)

    • Which aspect of imaging is a disadvantage of using computed tomography (CT)?

  • It is less expensive than chest radiographs.
  • It requires patient transportation to the machine. (correct)
  • It offers less detail than X-ray.
  • It uses less radiation than standard X-rays.

    • In what way does computed tomography (CT) offer an advantage over traditional X-rays?

  • CT can be performed more quickly than X-rays.
  • It utilizes a lower radiation dose.
  • CT requires less patient cooperation.
  • It provides greater detail of anatomical structures. (correct)

    • How many chest radiographs are performed annually in the US?

    <p>Approximately 80 million.</p> Signup and view all the answers

    What primary purpose do X-rays serve in medical imaging?

    <p>They are the most common imaging test due to simplicity.</p> Signup and view all the answers

    Which of the following is a characteristic of computed tomography (CT) imaging?

    <p>It uses multiple X-ray projections for imaging.</p> Signup and view all the answers

    What is a common diagnostic limitation of chest radiographs?

    <p>They provide poor detail of overlapping structures.</p> Signup and view all the answers

    Which factor contributes to the popularity of chest radiographs in medical practice?

    <p>Lower cost and ease of access.</p> Signup and view all the answers

    Which anatomical structures are included in a chest X-ray?

    <p>Lungs and pleural spaces</p> Signup and view all the answers

    What is the primary function of a chest X-ray in an acute setting?

    <p>Identify rib fractures</p> Signup and view all the answers

    How does the opacity of structures differ in a chest X-ray?

    <p>Bone appears white, air appears black</p> Signup and view all the answers

    Which of the following is NOT a typical use for chest computed tomography (CT)?

    <p>Identifying pneumonia</p> Signup and view all the answers

    What advantage does intravenous iodinated contrast provide during a chest CT?

    <p>It helps identify intravascular pathologies</p> Signup and view all the answers

    During chest CT imaging, which of the following structures can be visualized in detail?

    <p>Heart chambers and vessels</p> Signup and view all the answers

    What appears darker on a chest X-ray compared to other structures?

    <p>Lungs filled with air</p> Signup and view all the answers

    Which of the following statements about the opacity in radiography is true?

    <p>Soft tissues appear more grey compared to bone</p> Signup and view all the answers

    What is one of the key advantages of using a Chest Radiograph (CXR) over a CT scan for patients with shortness of breath in the emergency room?

    <p>CXR is faster and involves less radiation exposure.</p> Signup and view all the answers

    Which anatomical markers are essential to identify when reading a Chest Radiograph?

    <p>Lung lobes, diaphragm, aorta, and heart border.</p> Signup and view all the answers

    In which scenario is a CT scan generally considered superior to a Chest Radiograph?

    <p>Detecting lung nodules.</p> Signup and view all the answers

    Which major abdominal organ is NOT typically identified on abdominal X-ray?

    <p>Pancreas</p> Signup and view all the answers

    When performing an abdominal CT scan, what are the two types of contrast that may be used?

    <p>Intravenous (IV) and oral contrast.</p> Signup and view all the answers

    Which statement best describes the advantages of Ultrasound compared to CT in the context of screening for abdominal trauma?

    <p>Ultrasound does not involve ionizing radiation.</p> Signup and view all the answers

    What is one of the limitations of using a Chest Radiograph compared to a CT scan?

    <p>CXR cannot show soft tissue details.</p> Signup and view all the answers

    What instructional method is employed for this imaging session?

    <p>Team-Based Learning (TBL).</p> Signup and view all the answers

    What is a key advantage of bedside chest radiographs in acutely ill patients?

    <p>They have lower radiation exposure.</p> Signup and view all the answers

    Which imaging technique is most accurate for diagnosing pulmonary embolism?

    <p>CT scan</p> Signup and view all the answers

    What is one disadvantage of bedside chest radiographs?

    <p>They do not provide enough information about the organs.</p> Signup and view all the answers

    What is the primary use of a focused Ultrasound exam (FAST) in trauma cases?

    <p>To assess the presence of hemoperitoneum.</p> Signup and view all the answers

    Which imaging technique provides the most detail regarding organ injury in abdominal trauma?

    <p>CT scan</p> Signup and view all the answers

    What is a potential drawback of using CT scans?

    <p>They can involve higher radiation exposure.</p> Signup and view all the answers

    In the context of organ injury from a Motor Vehicle Collision (MVC), when is a CT scan preferred?

    <p>When high accuracy in organ identification is necessary.</p> Signup and view all the answers

    What limitation does Ultrasound have in evaluating abdominal trauma?

    <p>It often cannot determine the source of bleeding.</p> Signup and view all the answers

    What is a primary use of chest CT scans in an acute setting?

    <p>Pneumothorax diagnosis</p> Signup and view all the answers

    What advantage does CT have over Chest X-ray in lung cancer detection?

    <p>Higher sensitivity</p> Signup and view all the answers

    Which anatomical structure is well visualized on abdominal radiographs?

    <p>Liver opacity</p> Signup and view all the answers

    What condition can abdominal radiographs help diagnose in an acute situation?

    <p>Pneumoperitoneum</p> Signup and view all the answers

    In which situation is CT preferred over abdominal radiographs for evaluation?

    <p>Liver abnormality evaluation</p> Signup and view all the answers

    Which imaging modality is most effective in demonstrating detailed anatomy of all abdominal viscera?

    <p>Abdominal CT</p> Signup and view all the answers

    What can be identified on an abdominal radiograph during small bowel obstruction?

    <p>Lucent air-filled bowel loops</p> Signup and view all the answers

    What condition is NOT typically evaluated using a CT scan?

    <p>Liver opacity</p> Signup and view all the answers

    Study Notes

    Instructional Overview

    • Block titled "Foundations" directed by James Proffitt, PhD.
    • Offered on July 31, 2024, from 1:00 pm to 3:00 pm.
    • Instructors: William Rappaport, MD (Surgery) and Stephane Chartier, DO (Medical Imaging).
    • Uses team-based learning (TBL) and flipped classroom instructional methods.

    Learning Objectives

    • Explain CXR advantages over CT for patients with shortness of breath.
    • Basic skills for reading CXR and identifying anatomical markers.
    • Situations where CT is more effective than CXR.
    • Identify major abdominal organs on XR.
    • Recognize liver, spleen, pancreas, kidney, stomach, and colon on CT with contrast.
    • Compare advantages and disadvantages of Ultrasound (US) and CT for abdominal trauma screening.

    Radiography vs. Computed Tomography (CT)

    • Each year, about 80 million chest radiographs are performed in the US.
    • Chest X-rays are cost-effective, low in radiation, and quick to perform, including portable options.
    • X-ray technique involves penetrating radiation creating images based on density differences of tissues.
    • CT provides cross-sectional images, offering higher spatial resolution and details of anatomy with more radiation exposure.

    Chest Radiography

    • Key anatomical structures visualized: trachea, lungs, heart, aorta, and ribs.
    • Opacity dynamics: air appears black, bones appear white; lung conditions can alter this balance.
    • Common acute uses include identifying rib fractures, pneumothorax, pneumonia, and pleural effusions.

    Chest Computed Tomography (CT)

    • Can utilize iodinated contrast to reveal vascular issues (e.g., pulmonary embolism).
    • Detailed views of the tracheobronchial tree, heart chambers, and lungs are available.
    • Acute uses: diagnosing pulmonary embolism, aortic dissection, trauma injuries, etc.
    • Better for lung cancer screening due to higher sensitivity in detecting smaller tumors.

    Abdominal Radiographs

    • Identifiable structures include the liver, bowel loops, and kidneys.
    • Noted limitations in visualizing viscera; other imaging (US, CT, MRI) preferred for detailed intrabdominal assessment.
    • Useful for diagnosing pneumoperitoneum, renal stones, and bowel obstructions.

    Abdominal CT

    • Provides comprehensive views of all abdominal organs and better details in trauma cases.
    • Focused Ultrasound (FAST) can evaluate hemoperitoneum in acute trauma but may not specify the bleeding source.
    • US offers rapid bedside evaluation with no radiation, but CT is superior for identifying organ injuries and active bleeding.

    Summary of CT vs. Chest X-ray in Trauma Settings

    • Bedside chest radiographs prioritize patient stability and lower radiation but lack three-dimensional context.
    • CT, though more costly and requires transportation, offers critical diagnoses for conditions undetectable by X-ray.
    • In trauma cases, CT also effectively guides treatment decisions based on detailed injury localization.

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    Description

    Test your knowledge on the foundational concepts of Imaging 1. This quiz will cover topics discussed by the instructors, focusing on team-based learning methods. Engage with the material to assess your understanding of medical imaging principles.

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