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Related Experiment Videos

Contrast-enhanced peripheral MR angiography using SENSE in multiple stations: feasibility study.

Marianne de Vries1, Robbert J Nijenhuis, Romhild M Hoogeveen

  • 1Department of Radiology, Cardiovascular Research Institute Maastricht, Maastricht University Hospital, Maastricht, The Netherlands.

Journal of Magnetic Resonance Imaging : JMRI
|December 22, 2004
PubMed
Summary

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Parallel imaging, known as SENSE, is feasible and beneficial for peripheral contrast-enhanced magnetic resonance angiography (CE-MRA). This technique improves image quality and allows for high-quality depiction of the entire peripheral vascular tree.

Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Peripheral arterial disease diagnosis often relies on contrast-enhanced magnetic resonance angiography (CE-MRA).
  • Optimizing imaging techniques is crucial for accurate assessment of the peripheral vascular tree.

Purpose of the Study:

  • To evaluate the feasibility and benefits of using parallel imaging (SENSE) in peripheral CE-MRA.
  • To compare SENSE-accelerated CE-MRA with conventional methods for lower extremity vasculature assessment.

Main Methods:

  • Peripheral CE-MRA was performed on 19 patients using SENSE acceleration in the upper and lower leg stations.
  • Conventional non-accelerated imaging (CLEAR) was used for the aortoiliac station.
  • Image quality metrics (SNR, CNR, venous contamination) and diagnostic accuracy were compared to a non-SENSE group, with IA-DSA as the reference standard.

Related Experiment Videos

Main Results:

  • Significant improvements in signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were observed in the aortoiliac and upper leg segments (P ≤ 0.001).
  • No significant differences were found in subjective image quality or diagnostic accuracy between SENSE and non-SENSE groups.
  • Sensitivity and specificity for SENSE were 81% and 95%, respectively, compared to 79% and 96% for the non-SENSE group.

Conclusions:

  • Three-station peripheral CE-MRA using SENSE in specific stations is feasible and enhances peripheral MRA optimization.
  • SENSE facilitates routine, high-quality imaging of the complete peripheral vascular tree, including the pedal arch.
  • Further optimization may require higher SENSE factors for improved results.