Comparison of CT and MR angiography in evaluation of peripheral arterial disease before endovascular intervention

Alessandro Cina1, Carmine Di Stasi1, Vittorio Semeraro2

  • 1Department of Radiological Sciences, "Agostino Gemelli" Hospital, Catholic University, Rome, Italy.

Insights

Multidetector computed tomography angiography (MDCTA) is more accurate than magnetic resonance angiography (MRA) for assessing peripheral arterial disease, especially in infrapopliteal segments. MDCTA offers higher confidence and shorter examination times for endovascular intervention planning.

Area of Science:

  • Vascular Surgery
  • Diagnostic Imaging
  • Interventional Radiology

Background:

  • Peripheral arterial disease (PAD) diagnosis relies on imaging techniques like MDCTA and MRA for treatment selection.
  • No direct comparative studies exist for MDCTA versus MRA in PAD patients eligible for both modalities before endovascular treatment.

Purpose of the Study:

  • To compare the diagnostic performance of MDCTA and MRA in patients with PAD undergoing endovascular intervention.

Main Methods:

  • A prospective study compared 64-slice MDCTA and 1.5T MRA in 35 PAD patients.
  • Both techniques were used to determine TASC II and runoff severity scores.
  • Selective angiography served as the reference standard for accuracy assessment.

Main Results:

  • MDCTA and MRA showed high accuracy in aorto-iliac (0.92) and femoro-popliteal (MDCTA 0.94, MRA 0.90) segments.
  • MDCTA demonstrated superior accuracy in infrapopliteal segments (0.96 vs. 0.9) and runoff assessment (0.92 vs. 0.85).
  • MDCTA provided greater confidence and reduced examination time.

Conclusions:

  • MDCTA is a reliable first-line investigation for PAD patients considered for endovascular procedures.
  • It is particularly recommended when severe infrapopliteal disease is suspected based on clinical or duplex ultrasound findings.
Abstract

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