CTA Quiz

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Questions and Answers

What is the main purpose of CTA?

  • To obtain axial MDCT images during contrast infusion for visualization of bones
  • To obtain axial MDCT images during contrast infusion for visualization of arteries (correct)
  • To obtain axial MDCT images during contrast infusion for visualization of soft tissues
  • To obtain axial MDCT images during contrast infusion for visualization of veins

What is the recommended contrast injection rate for lower-limb CTA?

  • 4 mL s–1 via a peripheral vein (correct)
  • 6 mL s–1 via a peripheral vein
  • 8 mL s–1 via a peripheral vein
  • 2 mL s–1 via a peripheral vein

What is the preferred technique for delay in lower-limb CTA?

  • Manual adjustment of delay
  • Bolus tracking technique (correct)
  • Real-time delay adjustment
  • Preset empirical delay

What is the recommended slice thickness for lower-limb CTA?

<p>3 mm or less (A)</p> Signup and view all the answers

What are the indications for lower-limb CTA?

<p>Lower-limb ischemia, Arterio-venous malformation, Trauma (C)</p> Signup and view all the answers

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Study Notes

CTA Overview

  • The main purpose of CTA (Computed Tomography Angiography) is to evaluate the vascular system and diagnose vascular diseases.

CTA Technique

  • The recommended contrast injection rate for lower-limb CTA is 4-5 mL/sec.
  • The preferred technique for delay in lower-limb CTA is the bolus tracking technique, which involves tracking the contrast bolus to ensure optimal contrast enhancement.

CTA Image Acquisition

  • The recommended slice thickness for lower-limb CTA is 0.5-1.5 mm, which provides high-resolution images of the vascular system.

CTA Indications

  • Indications for lower-limb CTA include suspected peripheral artery disease, acute limb ischemia, and trauma or injury to the lower limb.

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