下载PDF
{"title":"多种族动脉粥样硬化研究单点队列中基于三维的左心房容积参数和血流参数之间的关联。","authors":"Maurice Pradella, Justin J Baraboo, Anthony Maroun, Sophia Z Liu, Amanda L DiCarlo, Stanley H Chu, Julia M Hwang, Mitchell A Collins, Rod Passman, Susan R Heckbert, Philip Greenland, Michael Markl","doi":"10.1148/ryct.230148","DOIUrl":null,"url":null,"abstract":"<p><p>Purpose To investigate associations between left atrial volume (LAV) and function with impaired three-dimensional hemodynamics from four-dimensional flow MRI. Materials and Methods A subcohort of participants from the Multi-Ethnic Study of Atherosclerosis from Northwestern University underwent prospective 1.5-T cardiac MRI including whole-heart four-dimensional flow and short-axis cine imaging between 2019 and 2020. Four-dimensional flow MRI analysis included manual three-dimensional segmentations of the LA and LA appendage (LAA), which were used to quantify LA and LAA peak velocity and blood stasis (% voxels < 0.1 m/sec). Short-axis cine data were used to delineate LA contours on all cardiac time points, and the resulting three-dimensional-based LAVs were extracted for calculation of LA emptying fractions (LAEF<sub>total</sub>, LAEF<sub>active</sub>, LAEF<sub>passive</sub>). Stepwise multivariable linear models were calculated for each flow parameter (LA stasis, LA peak velocity, LAA stasis, LAA peak velocity) to determine associations with LAV and LAEF. Results This study included 158 participants (mean age, 73 years ± 7 [SD]; 83 [52.5%] female and 75 [47.4%] male participants). In multivariable models, a 1-unit increase of LAEF<sub>total</sub> was associated with decreased LA stasis (β coefficient, -0.47%; <i>P</i> < .001), while increased LAEF<sub>active</sub> was associated with increased LA peak velocity (β coefficient, 0.21 cm/sec; <i>P</i> < .001). Furthermore, increased minimum LAV indexed was most associated with impaired LAA flow (higher LAA stasis [β coefficient, 0.65%; <i>P</i> < .001] and lower LAA peak velocity [β coefficient, -0.35 cm/sec; <i>P</i> < .001]). Conclusion Higher minimum LAV and reduced LA function were associated with impaired flow characteristics in the LA and LAA. LAV assessment might therefore be a surrogate measure for LA and LAA flow abnormalities. <b>Keywords:</b> Atherosclerosis, Left Atrial Volume, Left Atrial Blood Flow, 4D Flow MRI <i>Supplemental material is available for this article</i>. © RSNA, 2024.</p>","PeriodicalId":21168,"journal":{"name":"Radiology. Cardiothoracic imaging","volume":"6 2","pages":"e230148"},"PeriodicalIF":3.8000,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11056754/pdf/","citationCount":"0","resultStr":"{\"title\":\"Associations between 3D-based Left Atrial Volumetric and Blood Flow Parameters in a Single-Site Cohort of the Multi-Ethnic Study of Atherosclerosis.\",\"authors\":\"Maurice Pradella, Justin J Baraboo, Anthony Maroun, Sophia Z Liu, Amanda L DiCarlo, Stanley H Chu, Julia M Hwang, Mitchell A Collins, Rod Passman, Susan R Heckbert, Philip Greenland, Michael Markl\",\"doi\":\"10.1148/ryct.230148\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Purpose To investigate associations between left atrial volume (LAV) and function with impaired three-dimensional hemodynamics from four-dimensional flow MRI. Materials and Methods A subcohort of participants from the Multi-Ethnic Study of Atherosclerosis from Northwestern University underwent prospective 1.5-T cardiac MRI including whole-heart four-dimensional flow and short-axis cine imaging between 2019 and 2020. Four-dimensional flow MRI analysis included manual three-dimensional segmentations of the LA and LA appendage (LAA), which were used to quantify LA and LAA peak velocity and blood stasis (% voxels < 0.1 m/sec). Short-axis cine data were used to delineate LA contours on all cardiac time points, and the resulting three-dimensional-based LAVs were extracted for calculation of LA emptying fractions (LAEF<sub>total</sub>, LAEF<sub>active</sub>, LAEF<sub>passive</sub>). Stepwise multivariable linear models were calculated for each flow parameter (LA stasis, LA peak velocity, LAA stasis, LAA peak velocity) to determine associations with LAV and LAEF. Results This study included 158 participants (mean age, 73 years ± 7 [SD]; 83 [52.5%] female and 75 [47.4%] male participants). In multivariable models, a 1-unit increase of LAEF<sub>total</sub> was associated with decreased LA stasis (β coefficient, -0.47%; <i>P</i> < .001), while increased LAEF<sub>active</sub> was associated with increased LA peak velocity (β coefficient, 0.21 cm/sec; <i>P</i> < .001). Furthermore, increased minimum LAV indexed was most associated with impaired LAA flow (higher LAA stasis [β coefficient, 0.65%; <i>P</i> < .001] and lower LAA peak velocity [β coefficient, -0.35 cm/sec; <i>P</i> < .001]). Conclusion Higher minimum LAV and reduced LA function were associated with impaired flow characteristics in the LA and LAA. LAV assessment might therefore be a surrogate measure for LA and LAA flow abnormalities. <b>Keywords:</b> Atherosclerosis, Left Atrial Volume, Left Atrial Blood Flow, 4D Flow MRI <i>Supplemental material is available for this article</i>. © RSNA, 2024.</p>\",\"PeriodicalId\":21168,\"journal\":{\"name\":\"Radiology. Cardiothoracic imaging\",\"volume\":\"6 2\",\"pages\":\"e230148\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11056754/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiology. Cardiothoracic imaging\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1148/ryct.230148\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiology. Cardiothoracic imaging","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1148/ryct.230148","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING","Score":null,"Total":0}
引用次数: 0
引用
批量引用