Medical Imaging Modalities (X-Ray) - Lecture 6
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Questions and Answers

How does the size of the X-ray focal spot affect focal blur?

  • A smaller focal spot produces more blur
  • A smaller focal spot produces less blur (correct)
  • A larger focal spot produces less blur
  • A larger focal spot has no effect on blur

    • What effect does a longer Object-to-Image Distance (OID) have on focal blur?

  • Has no effect on blur
  • Decreases blur
  • Increases blur (correct)
  • Reduces image sharpness

    • How does Source-to-Object Distance (SOD) impact focal blur?

  • SOD has no impact on focal blur
  • Closer proximity increases blur
  • Increasing distance decreases blur
  • Decreasing distance increases blur (correct)

    • What is the key factor influencing subject contrast in radiography?

    <p>$kVp$</p> Signup and view all the answers

    How can technicians minimize focal blur in radiography?

    <p>Optimizing equipment settings</p> Signup and view all the answers

    Which of the following decreases focal blur in X-ray imaging?

    <p>$OID$ increase</p> Signup and view all the answers

    What happens to focal blur when the distance between the object and the image receptor increases?

    <p>$OID$ increases</p> Signup and view all the answers

    Which factor has the most significant impact on reducing focal blur in radiography?

    <p>$kVp$</p> Signup and view all the answers

    What effect does a smaller X-ray focal spot size have on image sharpness?

    <p>$Focal$ $Spot$ $Size$ decreases</p> Signup and view all the answers

    Why is reducing focal blur important in radiography?

    <p>To improve diagnostic image quality</p> Signup and view all the answers

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