Noninvasive, Three-Dimensional Visualization of Coronary Artery Bypass Grafts by Electron Beam Tomography

Achenbach, Stephan; Moshage, Werner; Ropers, Dieter; Nossen, J.; Bachmann, K.

doi:10.1016/s0002-9149(97)00003-9

Cited by 118 publications

(51 citation statements)

References 13 publications

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“…The outcome of coronary artery bypass grafting is closely related to the type of graft either venous or arterial. Arterial grafts are commonly used because of a better patency rate than venous coronary artery bypass grafts [2].…”

Section: Types Of Coronary Bypass Graftsmentioning

confidence: 99%

“…After 5 years, atherothrombotic occlusion of venous grafts accounts for a reduced patency rate. It has traditionally been estimated to range between 40 and 60% at 10-12 years [2,4].…”

Section: Venous Graftsmentioning

confidence: 99%

“…Also, the nondynamic nature of CTA makes the assessment of competitive flow or vasospasm in the arterial graft difficult [2,4,6].…”

Section: Arterial Graftsmentioning

confidence: 99%

“…Initial investigation of bypass grafts was done with single-slice scanners, and electron beam CT in1997 by Achenbach et al, who evaluated hemodynamically relevant stenosis, was possible in 84% of the cases with some limitation in the scan due to breathing artifacts and misplacement of the imaging volume [2].…”

Section: Accuracy Of Different Generations Of Ct In Coronary Bypass Gmentioning

confidence: 99%

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Evaluation of Coronary Artery Bypass by CT Coronary Angiography

Donkol¹,

Mahmoud²,

Elrawy³

2017

Coronary Artery Bypass Graft Surgery

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Coronary computed tomography angiography (CCTA) is an accurate method for graft imaging and assessment than invasive coronary angiography (ICA). CTA has excellent sensitivity and specificity. The chapter describes the role of CTA in evaluation of coronary bypass graft. It covers the appropriate indications for performing CTA after bypass operation, patient preparation, as well as protocol and technique of CTA. The chapter describes the post-examination processing of the images and how to interpret CTA images for detection of graft patency or dysfunction as occlusion, partial thrombosis, poor blood flow, and stealing flow from native artery. According to the American College of Cardiology, the American College of Radiology, and the North American Society for Cardiovascular Imaging, graft patency assessment with CTA is an appropriate approach in symptomatic patients at risk for graft stenosis/occlusion. Cardiac CT can be used to assess the patency of coronary artery bypass graft (CABG) with high diagnostic accuracy compared with ICA and even with a better performance compared to the assessment of native coronaries.

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Section: Types Of Coronary Bypass Graftsmentioning

confidence: 99%

“…After 5 years, atherothrombotic occlusion of venous grafts accounts for a reduced patency rate. It has traditionally been estimated to range between 40 and 60% at 10-12 years [2,4].…”

Section: Venous Graftsmentioning

confidence: 99%

“…Also, the nondynamic nature of CTA makes the assessment of competitive flow or vasospasm in the arterial graft difficult [2,4,6].…”

Section: Arterial Graftsmentioning

confidence: 99%

Section: Accuracy Of Different Generations Of Ct In Coronary Bypass Gmentioning

confidence: 99%

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Evaluation of Coronary Artery Bypass by CT Coronary Angiography

Donkol¹,

Mahmoud²,

Elrawy³

2017

Coronary Artery Bypass Graft Surgery

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“…A multicenter study using planar tomographic imaging with EBCT attained fairly good diagnostic accuracy (the sensitivity, specificity, and accuracy of detecting graft patency were 93.4%, 88.9%, and 92.1%, respectively). 15) For the purpose of obtaining more detailed information to understand the anatomy and status of graft patency, [16][17][18] recent advances in EBA technology have offered the challenge of constructing a three-dimensional image of the cardiac surface with coronary vessels. In this technology, a series of image data should be sampled at a specified trigger-time point of the cardiac cycle for several heart beats.…”

Section: Arteriesmentioning

confidence: 99%

Noninvasive Detection of Coronary Artery Bypass Graft Patency by Intravenous Electron Beam Computed Tomographic Angiography.

et al. 2003

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SUMMARYThis study evaluates the usefulness of intravenous electron beam computed tomographic angiography (EBA) for the detection of coronary artery bypass graft patency in 43 patients (33 men and 10 women, mean age, 65 years) who had coronary artery bypass graft surgery. EBA was performed a few days before selective bypass graft angiography (SGA). Forty axial cross-sections of angiographic images of the heart were acquired consecutively by an electrocardiographic trigger signal at 40% of the RR interval, which corresponds to the end-systolic phase. EBA data were reconstructed as a three-dimensional shaded surface display of the heart and bypass grafts. Detectability of the patency of bypass grafts was evaluated, taking selective angiographic images of the bypass grafts as a gold standard. One hundred and nine grafts (96%) out of 114 grafts were subjected to evaluation: 37 grafts were left internal mammary artery grafts (LIMA), 7 were right internal mammary artery grafts (RIMA), 6 were gastroepiploic artery grafts (GEA), 7 were free gastroepiploic artery grafts with venous drainage (free-GEA), 7 were radial artery grafts (RAG), and 45 were saphenous vein grafts (SVG). The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of EBA were 98%, 100%, 100%, 91%, and 98%, respectively. EBA sampled at the end-systolic period was determined to be useful for the detection of coronary artery bypass graft patency and occlusion. (Jpn Heart J 2003; 44: 811-822) Key words: Electron beam computed tomography, Coronary artery bypass grafting, Angiography POSTOPERATIVE angina occurs with a frequency of 30% in the first year after coronary artery bypass graft (CABG) surgery.1) It may result from either graft occlusion, or progression of the atherosclerotic lesion of the native coronary From the

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