Electrocardiogram-Gated Intravascular Ultrasound Image Acquisition After Coronary Stent Deployment Facilitates On-Line Three-Dimensional Reconstruction and Automated Lumen Quantification

Birgelen, Clemens von; Mintz, Gary S.; Nicosia, Antonino; Foley, David P.; Giessen, Wim J. van der; Bruining, Nico; Airiian, Sergei G.; Roelandt, Jos R.T.C.; Feyter, Pim J. de; Serruys, Patrick W.

doi:10.1016/s0735-1097(97)00154-x

Cited by 70 publications

(42 citation statements)

References 33 publications

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“…The IVUS transducer was withdrawn through the stationary imaging sheath by an ECG-triggered pullback device with a stepping motor. 12 IVUS images coinciding with the peak of the R wave, which eliminates the artifacts caused by the movement of the heart during the cardiac cycle, were acquired. After each image acquisition, the transducer was withdrawn 0.2 mm to acquire the next image coincident with the R wave.…”

Section: Ivus Image Acquisition Analysismentioning

confidence: 99%

“…After each image acquisition, the transducer was withdrawn 0.2 mm to acquire the next image coincident with the R wave. The ECG-gated image acquisition and digitization was performed by a workstation designed for the 3D reconstruction of echocardiographic images 12 (EchoScan, Tomtec). A Microsoft Windows-based contour detection program, developed at the Thoraxcenter, Rotterdam, was used for the automated 3D analysis of up to 200 IVUS images.…”

Section: Ivus Image Acquisition Analysismentioning

confidence: 99%

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Positive Geometric Vascular Remodeling Is Seen After Catheter-Based Radiation Followed by Conventional Stent Implantation but Not After Radioactive Stent Implantation

et al. 2000

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Background-Recent reports demonstrate that intracoronary radiation affects not only neointimal formation but also vascular remodeling. Radioactive stents and catheter-based techniques deliver radiation in different ways, suggesting that different patterns of remodeling after each technique may be expected. Methods and Results-We analyzed remodeling in 18 patients after conventional stent implantation, 16 patients after low-activity radioactive stent implantation, 16 patients after higher activity radioactive stent implantation, and, finally, 17 patients who underwent catheter-based radiation followed by conventional stent implantation. Intravascular ultrasound with 3D reconstruction was used after stent implantation and at the 6-month follow-up to assess remodeling within the stent margins and at its edges. Preprocedural characteristics were similar between groups. In-stent neointimal hyperplasia (NIH) was inhibited by high-activity radioactive stent implantation (NIH 9.0 mm 3 ) and by catheter-based radiation followed by conventional stent implantation (NIH 6.9 mm 3 ) compared with low-activity radioactive stent implantation (NIH 21.2 mm 3 ) and conventional stent implantation (NIH 20.8 mm 3 ) (Pϭ0.008). No difference in plaque or total vessel volume was seen behind the stent in the conventional, low-activity, or high-activity stent implantation groups. However, significant increases in plaque behind the stent (15%) and in total vessel volume (8%) were seen in the group that underwent catheter-based radiation followed by conventional stent implantation. All 4 groups demonstrated significant late lumen loss at the stent edges; however, edge restenosis was seen only in the group subjected to high-activity stent implantation and appeared to be due to an increase in plaque and, to a lesser degree, to negative remodeling. Conclusions-Distinct differences in the patterns of remodeling exist between conventional, radioactive, and catheterbased radiotherapy with stenting.

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Section: Ivus Image Acquisition Analysismentioning

confidence: 99%

Section: Ivus Image Acquisition Analysismentioning

confidence: 99%

Positive Geometric Vascular Remodeling Is Seen After Catheter-Based Radiation Followed by Conventional Stent Implantation but Not After Radioactive Stent Implantation

et al. 2000

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“…Despite the simplicity of some of the presented works [47]- [49], [53] encouraging results were produced, especially on images acquired with low-frequency transducers (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30). However, in reality, the border detection problem is more complex, especially when high-frequency transducers (above 40 MHz) are used due to intrinsic and extrinsic image artifacts (see Section I-G) as well as local and global variations among luminal and intimal grayscale distributions, demanding for more sophisticated methods.…”

Section: Statistical-and Probabilistic-based Techniquesmentioning

confidence: 97%

“…They later evaluated the performance of the segmentation by comparing to histological images [20]. The algorithm performance was further refined and correlation between manual and automated traced contours was improved from (r = 0.91) to (r = 0.98) by employing electrocardiogram (ECG)-gated images [21]. The main limitations were related to non-uniform transducer rotation and high curvature of the arterial vessel shape that created distortions in planar images.…”

Section: A Edge-tracking and Gradient-based Techniquesmentioning

confidence: 99%

A State-of-the-Art Review on Segmentation Algorithms in Intravascular Ultrasound (IVUS) Images

Katouzian

Angelini

Carlier

et al. 2012

IEEE Trans. Inform. Technol. Biomed.

132

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Abstract-Over the past two decades, intravascular ultrasound (IVUS) image segmentation has remained a challenge for researchers while the use of this imaging modality is rapidly growing in catheterization procedures and in research studies. IVUS provides cross-sectional grayscale images of the arterial wall and the extent of atherosclerotic plaques with high spatial resolution in real time. In this paper, we review recently developed image processing methods for the detection of media-adventitia and luminal borders in IVUS images acquired with different transducers operating at frequencies ranging from 20 to 45 MHz. We discuss methodological challenges, lack of diversity in reported datasets, and weaknesses of quantification metrics that make IVUS segmentation still an open problem despite all efforts. In conclusion, we call for a common reference database, validation metrics, and ground-truth definition with which new and existing algorithms could be benchmarked.Index Terms-Intravascular ultrasound (IVUS), lumen, mediaadventitia (MA), segmentation.

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“…[12][13][14][15] Of note, a low frame rate does not allow accurate detection of near end-diastolic frames and cannot be processed by the Intelligate algorithm. Therefore, IVUS data acquired with a 30-MHz catheter and attached to a Clearview console were retrospectively corrected before further analyses.…”

Section: Ivus Echogenicity Analysismentioning

confidence: 99%

Long-Term (>10 Years) Clinical Outcomes of First-in-Human Biodegradable Poly- l -Lactic Acid Coronary Stents

et al. 2012

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Background-The purpose of this study was to evaluate the long-term safety of the Igaki-Tamai stent, the first-in-human fully biodegradable coronary stent made of poly-l-lactic acid. Methods and Results-Between September 1998 and April 2000, 50 patients with 63 lesions were treated electively with 84 Igaki-Tamai stents. Overall clinical follow-up (Ͼ10 years) of major adverse cardiac events and rates of scaffold thrombosis was analyzed together with the results of angiography and intravascular ultrasound. Major adverse cardiac events included all-cause death, nonfatal myocardial infarction, and target lesion revascularization/target vessel revascularization. During the overall clinical follow-up period (121Ϯ17 months), 2 patients were lost to follow-up. There were 1 cardiac death, 6 noncardiac deaths, and 4 myocardial infarctions. Survival rates free of all-cause death, cardiac death, and major adverse cardiac events at 10 years were 87%, 98%, and 50%, respectively. The cumulative rates of target lesion revascularization (target vessel revascularization) were 16% (16%) at 1 year, 18% (22%) at 5 years, and 28% (38%) at 10 years. Two definite scaffold thromboses (1 subacute, 1 very late) were recorded. The latter case was related to a sirolimus-eluting stent, which was implanted for a lesion proximal to an Igaki-Tamai stent. From the analysis of intravascular ultrasound data, the stent struts mostly disappeared within 3 years. The external elastic membrane area and stent area did not change. Conclusion-Acceptable major adverse cardiac events and scaffold thrombosis rates without stent recoil and vessel remodeling suggested the long-term safety of the Igaki-Tamai stent. (Circulation. 2012;125:2343-2352.)

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Electrocardiogram-Gated Intravascular Ultrasound Image Acquisition After Coronary Stent Deployment Facilitates On-Line Three-Dimensional Reconstruction and Automated Lumen Quantification

Abstract: ECG-gated image acquisition after coronary stent deployment is feasible, permits on-line automated 3D reconstruction and analysis and provides reliable and reproducible measurements; these factors facilitate detection of the minimal lumen site.

Cited by 70 publications

References 33 publications

Positive Geometric Vascular Remodeling Is Seen After Catheter-Based Radiation Followed by Conventional Stent Implantation but Not After Radioactive Stent Implantation

Positive Geometric Vascular Remodeling Is Seen After Catheter-Based Radiation Followed by Conventional Stent Implantation but Not After Radioactive Stent Implantation

A State-of-the-Art Review on Segmentation Algorithms in Intravascular Ultrasound (IVUS) Images

Long-Term (>10 Years) Clinical Outcomes of First-in-Human Biodegradable Poly- l -Lactic Acid Coronary Stents

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