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Technical considerations for lower limb multidetector computed tomographic angiography.

Aoife N Keeling1, Cormac Farrelly, James C Carr

  • 1Department of Radiology, Division of Cardiovascular Imaging, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. aoifekeeling@hotmail.com

Vascular Medicine (London, England)
|December 9, 2010
PubMed
Summary
This summary is machine-generated.

Multidetector computed tomography angiography (MDCTA) offers a non-invasive method for imaging the arterial tree. This review details technical aspects, radiation dose reduction, and contrast delivery for peripheral MDCTA, potentially challenging digital subtraction angiography.

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Area of Science:

  • Radiology
  • Vascular Imaging
  • Medical Imaging Technology

Background:

  • Multidetector computed tomography (MDCT) provides non-invasive imaging of the entire arterial tree.
  • Accurate diagnosis and stratification of atherosclerotic disease require optimal technical considerations for MDCT angiography (MDCTA).
  • Peripheral computed tomographic angiography (CTA) is a key application of MDCT in vascular imaging.

Purpose of the Study:

  • To review the technical aspects of peripheral computed tomographic angiography (CTA) acquisition.
  • To discuss clinical indications, scan protocols, radiation dose reduction, and contrast delivery for peripheral MDCTA.
  • To evaluate the role of MDCTA in quantifying atherosclerotic disease load compared to traditional methods.

Main Methods:

  • Review of technical considerations for peripheral MDCTA acquisition.
  • Discussion of radiation dose reduction strategies.
  • Presentation of contrast bolus detection and delivery methods.
  • Overview of post-processing techniques for MDCTA.

Main Results:

  • MDCTA enables comprehensive, non-invasive imaging of the peripheral arterial tree.
  • Optimal technical parameters are crucial for accurate atherosclerotic disease assessment.
  • Radiation dose reduction methods and effective contrast delivery are key considerations.
  • MDCTA shows potential to rival digital subtraction angiography and magnetic resonance angiography for disease quantification.

Conclusions:

  • MDCTA is a valuable non-invasive tool for peripheral arterial imaging and atherosclerotic disease assessment.
  • Careful attention to technical factors, including radiation dose and contrast administration, optimizes diagnostic accuracy.
  • MDCTA is emerging as a powerful alternative to conventional angiography for evaluating peripheral vascular disease.