Intravascular Ultrasound

Marrocco, Christopher J.; Jaber, Raffat; White, Rodney A.; Walot, Irwin; deVirgilio, Christian; Donayre, Carlos E.; Kopchok, George E.

doi:10.1053/j.semvascsurg.2012.07.006

Cited by 13 publications

(8 citation statements)

References 15 publications

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“…The ability of IVUS to identify abnormalities has previously been documented including its ability to demonstrate vessel interfaces with stent use [6,26] and to clearly identify false lumens [11]. These strengths are similar to those we have characterized above when evaluating TEVGs.…”

Section: Discussionsupporting

confidence: 65%

“…It is most frequently described in the adult population with placement of stents for the treatment of aneurysms or atherosclerosis [6–10]. The advantages of this technique are a limitation of contrast use, a 2-dimensional view of the vessel lumen, an ability to determine true from false lumens, and accurate assessment of stent apposition to the luminal wall [11–13]. Intravascular pathology, such as thrombus, can also be more closely evaluated than with angiography, which may only show luminal occlusion or a partial filling defect [14].…”

Section: Introductionmentioning

confidence: 99%

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Intravascular Ultrasound Characterization of a Tissue-Engineered Vascular Graft in an Ovine Model

Pepper

Clark

Best

et al. 2017

J. of Cardiovasc. Trans. Res.

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Patients who undergo implantation of a tissue-engineered vascular graft (TEVG) for congenital cardiac anomalies are monitored with echocardiography, followed by magnetic resonance imaging or angiography when indicated. While these methods provide data regarding the lumen, minimal information regarding neotissue formation is obtained. Intravascular ultrasound (IVUS) has previously been used in a variety of conditions to evaluate the vessel wall. The purpose of this study was to evaluate the utility of IVUS for evaluation of TEVGs in our ovine model. Eight sheep underwent implantation of TEVGs either unseeded or seeded with bone marrow-derived mononuclear cells. Angiography, IVUS, and histology were directly compared. Endothelium, media, and graft were identifiable on IVUS and histology at multiple time points. There was strong agreement between IVUS and angiography for evaluation of luminal diameter. IVUS offers a valuable tool to evaluate the changes within TEVGs, and clinical translation of this application is warranted.

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Section: Discussionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Intravascular Ultrasound Characterization of a Tissue-Engineered Vascular Graft in an Ovine Model

Pepper

Clark

Best

et al. 2017

J. of Cardiovasc. Trans. Res.

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“…Yet, X-ray angiography has some limitations: it provides 2D projections of a 3D structure, it gives no information about the vessel wall geometry and composition, and it has a limited resolution [1]. These limitations can be overcome with intravascular imaging: intravascular ultrasound (IVUS) [2] and optical coherence tomography [3][4][5][6][7] (OCT) are commercially available modalities.…”

Section: Introductionmentioning

confidence: 99%

In-vitro and in-vivo imaging of coronary artery stents with Heartbeat OCT

Cecchetti

Wang

Hoogendoorn

et al. 2020

Int J Cardiovasc Imaging

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To quantify the impact of cardiac motion on stent length measurements with Optical Coherence Tomography (OCT) and to demonstrate in vivo OCT imaging of implanted stents, without motion artefacts. The study consists of: clinical data evaluation, simulations and in vivo tests. A comparison between OCT-measured and nominal stent lengths in 101 clinically acquired pullbacks was carried out, followed by a simulation of the effect of cardiac motion on stent length measurements, experimentally and computationally. Both a commercial system and a custom OCT, capable of completing a pullback between two consecutive ventricular contractions, were employed. A 13 mm long stent was implanted in the left anterior descending branch of two atherosclerotic swine and imaged with both OCT systems. The analysis of the clinical OCT images yielded an average difference of 1.1 ± 1.6 mm, with a maximum difference of 7.8 mm and the simulations replicated the statistics observed in clinical data. Imaging with the custom OCT, yielded an RMS error of 0.14 mm at 60 BPM with the start of the acquisition synchronized to the cardiac cycle. In vivo imaging with conventional OCT yielded a deviation of 1.2 mm, relative to the length measured on ex-vivo micro-CT, while the length measured in the pullback acquired by the custom OCT differed by 0.20 mm. We demonstrated motion artefact-free OCT-imaging of implanted stents, using ECG triggering and a rapid pullback.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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“…Intravascular ultrasound (IVUS) imaging offers a new approach different from CT and MRI , and provides real‐time 2D precise morphology of intravascular diseases, including the blood clot, plaque and aneurysms, from inside vessels . It has also shown great potential to be extended to 3D volumetric imaging .…”

Section: Introductionmentioning

confidence: 99%