Contrast-enhanced magnetic resonance angiography of mammary artery grafts after minimally invasive coronary bypass surgery

Vetter, H; Driever, R.; Mertens, Heinrich; Kempkes, Udo; Cramer, Bernhard M.

doi:10.1016/s0003-4975(01)02435-3

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…In fact, MR coronary angiography has been reported to be clinically relevant in determining the origin and course of anomalous coronary arteries [19][20][21] for the follow-up of coronary artery bypass graft patencies [7,22] and in donor-recipient anastomoses for heart transplantation [23,24]. Nevertheless, the precise role of MR coronary angiography in depicting coronary artery atheromatosis and coronary artery stenosis must be still identified, although recent results have shown that MR coronary angiography is promising in detecting stenotic coronary artery lesions at the proximal and middle part of the vessels.…”

Section: Discussionmentioning

confidence: 99%

Improved Visualization of Coronary Arteries Using a New Three-Dimensional Submillimeter MR Coronary Angiography Sequence with Balanced Gradients

Giorgi

Dymarkowski

Maes

et al. 2002

American Journal of Roentgenology

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OBJECTIVE. The goal of our study was to evaluate a new three-dimensional real-time navigator MR coronary angiography sequence to noninvasively visualize the coronary arteries.SUBJECTS AND METHODS. Fifteen healthy volunteers underwent MR coronary angiography with a new balanced turbo field-echo sequence in comparison with the standard turbo field-echo sequence. Signal-to-noise, blood-to-myocardium, blood-to-fat, and blood-topericardial fluid contrast ratios of the left and right coronary artery systems were measured. Image quality was graded, the length and diameter of the coronary arteries were measured, and the number of visible side branches was assessed.RESULTS. The balanced turbo field-echo images yielded a higher blood-to-myocardium and blood-to-pericardial fluid contrast ratio, a similar blood-to-fat contrast ratio, and a lower signal-to-noise ratio than the turbo field-echo images. On a 5-point grading scale (1, nondiagnostic or unreadable; 2, poor; 3, moderate; 4, good; 5, excellent), image quality was rated significantly better for the balanced turbo field-echo sequence than for the turbo field-echo sequence (left coronary artery, 4.0 ± 0.6 vs 3.6 ± 0.5 [ p = 0.015]; right coronary artery, 4.4 ± 0.4 vs 3.6 ± 0.4 [ p < 0.0001], respectively), resulting in a significantly longer segment of the three major coronary arteries visualized (left anterior descending coronary artery, 92 ± 21 mm vs 79 ± 24 mm; left circumflex coronary artery, 70 ± 7 mm vs 60 ± 18 mm; right coronary artery, 112 ± 28 mm vs 95 ± 27 mm) and a significantly higher number of side branches visualized (left anterior descending coronary artery, 2.9 ± 1.3 vs 1.5 ± 1.3; left circumflex coronary artery, 2.1 ± 1.7 vs 1.0 ± 1.2; right coronary artery, 3.7 ± 1.7 vs 2.6 ± 1.5). Mean imaging time per coronary artery was significantly shorter for the balanced turbo field-echo sequence (5.7 ± 1.0 min) than for the turbo field-echo sequence (8.4 ± 1.4 min) ( p < 0.0001).CONCLUSION. Compared with standard turbo field-echo MR coronary angiography, optimized balanced turbo field-echo MR coronary angiography improves the visualization of the coronary arteries and their side branches within a significantly shorter imaging time.oronary artery disease remains one of the leading causes of morbidity and mortality in the industrialized countries. Catheter angiography, currently the gold standard in detecting atheromatous coronary artery disease, is invasive and potentially harmful and necessitates the use of iodinated contrast material and radiation. Therefore, several techniques are under research to depict atheromatous changes in the coronary arteries in a noninvasive or less invasive fashion [1,2]. This technique could be used to screen or select patients for coronary catherization, which would significantly reduce the number of unnecessary diagnostic catherizations and would thus be potentially cost-effective. Three-dimensional (3D) MR coronary angiography techniques, performed either in breath-hold [3][4][5] or during free-breathing using a navigator [6,7...

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Section: Discussionmentioning

confidence: 99%

Improved Visualization of Coronary Arteries Using a New Three-Dimensional Submillimeter MR Coronary Angiography Sequence with Balanced Gradients

Giorgi

Dymarkowski

Maes

et al. 2002

American Journal of Roentgenology

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“…Die Kernspintomographie (NMR, MRT, MR) stellt grundsätzlich eine mögliche Alternative zum Cardio-CT dar [4,10,16,19,57]. In einer früheren vergleichenden Untersuchung war das Cardio-CT dem MRT in der Beurteilung der Durchgängigkeit von Bypassgefäßen überlegen [50], insbesondere bei arteriellen Bypassgefäßen [29].…”

Section: Gibt Es Alternativen?unclassified

Nichtinvasive Angiographie koronarer Bypassgefäße mit dem Cardio-CT in einer kardiologischen Praxis

Silber¹,

Finsterer²,

Krischke³

et al. 2003

Herz

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Our results show that noninvasive bypass angiography with the ultrafast multi-slice CT (MSCT) provides relevant information for the practicing cardiologist. Noninvasive bypass angiography with a cardio-CT predominantly aims at asymptomatic patients without proof of myocardial ischemia ("bypass check") for the detection of asymptomatic occluded bypass grafts as early as possible. In patients with asymptomatic bypass occlusion, considering a coronary or bypass intervention for prognostic reasons is an option. It is important to note that in our study in a mean of 5 years after bypass surgery almost every third patient had an unexpected bypass graft occlusion.

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“…At present, postoperative angiography is still the golden standard to assess IMA graft patency but the invasive nature limits its routine use. Other methods were reported over the last years, including intravascular, transthoracic, and supraclavicular duplex ultrasonography, magnetic resonance imaging and multislice computed tomography 4–10 . Nowadays, 64‐multislice computed tomography (MSCT) angiography has potential diagnostic performance in the diagnosis of coronary artery disease and in (symptomatic) patients after bypass surgery.…”

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confidence: 99%

Can Late Supraclavicular Echo Doppler Reliably Predict Angiographical String Sign of Lima to Lad Area Grafts?

et al. 2007

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Contrast-enhanced magnetic resonance angiography of mammary artery grafts after minimally invasive coronary bypass surgery

Cited by 7 publications

References 13 publications

Improved Visualization of Coronary Arteries Using a New Three-Dimensional Submillimeter MR Coronary Angiography Sequence with Balanced Gradients

Improved Visualization of Coronary Arteries Using a New Three-Dimensional Submillimeter MR Coronary Angiography Sequence with Balanced Gradients

Nichtinvasive Angiographie koronarer Bypassgefäße mit dem Cardio-CT in einer kardiologischen Praxis

Can Late Supraclavicular Echo Doppler Reliably Predict Angiographical String Sign of Lima to Lad Area Grafts?

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