Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent Vessel
Introduction: High resolution vessel wall imaging (HR‐VWI) is a promising tool in studying intracerebral atherosclerotic disease. The analysis of the interplay between the patterns of enhancement between the plaque and its parent vessel can generate further insights on the biology of these lesions....
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| Format: | Article |
| Language: | English |
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Wiley
2021-11-01
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| Series: | Stroke: Vascular and Interventional Neurology |
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| Online Access: | https://www.ahajournals.org/doi/10.1161/SVIN.01.suppl_1.000188 |
| _version_ | 1797948384606158848 |
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| author | Sebastian Sanchez Ashrita Raghuram Alberto Varon Miller Rami Fakih Edgar A Samaniego |
| author_facet | Sebastian Sanchez Ashrita Raghuram Alberto Varon Miller Rami Fakih Edgar A Samaniego |
| author_sort | Sebastian Sanchez |
| collection | DOAJ |
| description | Introduction: High resolution vessel wall imaging (HR‐VWI) is a promising tool in studying intracerebral atherosclerotic disease. The analysis of the interplay between the patterns of enhancement between the plaque and its parent vessel can generate further insights on the biology of these lesions. We have developed a 3D method of plaque and parent vessel analysis. Methods: Images from fifty‐five plaques were obtained using 7T HR‐VWI. T1 and T1+Gd sequences were performed. 3D reconstructions of the plaque and its parent vessel were generated with 3D Slicer. Using an in‐house code, probes were orthogonally extended from the lumen of the vessel into the vessel wall and the plaque. Signal intensity values were then normalized to the corpus callosum. 3D heat maps and histograms were generated from hundreds of data points. A detailed analysis of the morphology of the histograms was performed to determine the uptake of gadolinium (Gd) by the parent vessel and the plaque. Variations in the width of the histogram were measured with the standard deviation. Results: Forty‐one patients with 55 plaques (41 culprit and 15 non culprit) were included. There was no difference in enhancement in T1‐pre between culprit and non‐culprit plaques when compared to the parent vessel (width = 0.14 ± 0.05 and 0.14 ± 0.03, respectively; p = 0.91). On the T1+Gd culprit plaques were significantly more enhancing compared to the parent vessel (0.26 ± 0.10) than non‐culprit plaques (0.20 ± 0.06) (p = 0.02). The presence of an enhancing plaque creates a bimodal distribution that increases the width of the histogram curve (figure). Conclusions: Culprit plaques exhibit different patterns of enhancement relative to the parent vessel compared to non‐culprit plaques. Histogram analysis of the parent vessel and its plaques provides a new set of metrics that may be used as a biomarker of disease progression. |
| first_indexed | 2024-04-10T21:42:28Z |
| format | Article |
| id | doaj.art-5b1edfb0b595469d9c8e2d65c2aaaadb |
| institution | Directory Open Access Journal |
| issn | 2694-5746 |
| language | English |
| last_indexed | 2024-04-10T21:42:28Z |
| publishDate | 2021-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Stroke: Vascular and Interventional Neurology |
| spelling | doaj.art-5b1edfb0b595469d9c8e2d65c2aaaadb2023-01-18T21:39:24ZengWileyStroke: Vascular and Interventional Neurology2694-57462021-11-011S110.1161/SVIN.01.suppl_1.000188Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent VesselSebastian Sanchez0Ashrita Raghuram1Alberto Varon Miller2Rami Fakih3Edgar A Samaniego4The University of Iowa Hospitals and Clinics Department of Neurology, Iowa City Iowa United States of AmericaThe University of Iowa Hospitals and Clinics Department of Neurology, Iowa City Iowa United States of AmericaThe University of Iowa Hospitals and Clinics Department of Neurology, Iowa City Iowa United States of AmericaThe University of Iowa Hospitals and Clinics Department of Neurology, Iowa City Iowa United States of AmericaThe University of Iowa Hospitals and Clinics Department of Neurology, Iowa City Iowa United States of AmericaIntroduction: High resolution vessel wall imaging (HR‐VWI) is a promising tool in studying intracerebral atherosclerotic disease. The analysis of the interplay between the patterns of enhancement between the plaque and its parent vessel can generate further insights on the biology of these lesions. We have developed a 3D method of plaque and parent vessel analysis. Methods: Images from fifty‐five plaques were obtained using 7T HR‐VWI. T1 and T1+Gd sequences were performed. 3D reconstructions of the plaque and its parent vessel were generated with 3D Slicer. Using an in‐house code, probes were orthogonally extended from the lumen of the vessel into the vessel wall and the plaque. Signal intensity values were then normalized to the corpus callosum. 3D heat maps and histograms were generated from hundreds of data points. A detailed analysis of the morphology of the histograms was performed to determine the uptake of gadolinium (Gd) by the parent vessel and the plaque. Variations in the width of the histogram were measured with the standard deviation. Results: Forty‐one patients with 55 plaques (41 culprit and 15 non culprit) were included. There was no difference in enhancement in T1‐pre between culprit and non‐culprit plaques when compared to the parent vessel (width = 0.14 ± 0.05 and 0.14 ± 0.03, respectively; p = 0.91). On the T1+Gd culprit plaques were significantly more enhancing compared to the parent vessel (0.26 ± 0.10) than non‐culprit plaques (0.20 ± 0.06) (p = 0.02). The presence of an enhancing plaque creates a bimodal distribution that increases the width of the histogram curve (figure). Conclusions: Culprit plaques exhibit different patterns of enhancement relative to the parent vessel compared to non‐culprit plaques. Histogram analysis of the parent vessel and its plaques provides a new set of metrics that may be used as a biomarker of disease progression.https://www.ahajournals.org/doi/10.1161/SVIN.01.suppl_1.000188Vascular ImagingCerebrovascular DiseaseIntra Caranial StenosisStrokeNew Innovation |
| spellingShingle | Sebastian Sanchez Ashrita Raghuram Alberto Varon Miller Rami Fakih Edgar A Samaniego Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent Vessel Stroke: Vascular and Interventional Neurology Vascular Imaging Cerebrovascular Disease Intra Caranial Stenosis Stroke New Innovation |
| title | Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent Vessel |
| title_full | Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent Vessel |
| title_fullStr | Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent Vessel |
| title_full_unstemmed | Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent Vessel |
| title_short | Abstract 1122‐000188: 3D Analysis of Atherosclerotic Plaque Enhancement and the Parent Vessel |
| title_sort | abstract 1122 000188 3d analysis of atherosclerotic plaque enhancement and the parent vessel |
| topic | Vascular Imaging Cerebrovascular Disease Intra Caranial Stenosis Stroke New Innovation |
| url | https://www.ahajournals.org/doi/10.1161/SVIN.01.suppl_1.000188 |
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