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Contrast-enhanced breath-hold MR angiography for evaluating patency of coronary artery bypass grafts

T G Vrachliotis1, K G Bis, D Aliabadi

  • 1Department of Diagnostic Radiology, William Beaumont Hospital, Royal Oak, MI 48073, USA.

AJR. American Journal of Roentgenology
|April 1, 1997
PubMed

Insights

Contrast-enhanced breath-hold MR angiography accurately assesses coronary artery bypass graft (CABG) patency. This rapid technique is a promising diagnostic tool for post-CABG patients.

Area of Science:

  • Cardiovascular imaging
  • Medical diagnostics
  • Radiology

Background:

  • Coronary artery bypass grafting (CABG) is a common surgical procedure.
  • Assessing the patency of CABG grafts is crucial for patient outcomes.
  • Non-invasive imaging modalities are sought to evaluate graft status.

Purpose of the Study:

  • To evaluate the efficacy of contrast-enhanced breath-hold MR angiography.
  • To determine the ability of MR angiography to identify patent coronary artery bypass grafts (CABGs).

Main Methods:

  • Fifteen patients who underwent CABG surgery were included.
  • Three-dimensional breath-hold ECG-triggered contrast-enhanced MR angiography at 1.5-T was performed.
  • MR angiography results were compared with conventional coronary angiography.

Main Results:

  • MR angiography demonstrated high agreement with coronary angiography for graft patency (kappa = 0.90).
  • Sensitivity and specificity for detecting graft patency were 93% and 97%, respectively.
  • The technique proved rapid and effective in assessing 44 grafts.

Conclusions:

  • Contrast-enhanced breath-hold MR angiography is a valuable tool for assessing CABG graft patency.
  • The method shows promise as a rapid and useful diagnostic technique.
  • This imaging modality can aid in the management of patients post-CABG surgery.
Abstract

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