{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T14:35:01Z","timestamp":1768919701262,"version":"3.49.0"},"reference-count":24,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2023,9,21]],"date-time":"2023-09-21T00:00:00Z","timestamp":1695254400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"},{"start":{"date-parts":[[2023,9,21]],"date-time":"2023-09-21T00:00:00Z","timestamp":1695254400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Echocardiogr"],"published-print":{"date-parts":[[2024,3]]},"DOI":"10.1007\/s12574-023-00626-8","type":"journal-article","created":{"date-parts":[[2023,9,21]],"date-time":"2023-09-21T16:02:26Z","timestamp":1695312146000},"page":"41-47","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Optimal left ventricular diameter measurement in subjects with sigmoid septum: comparison with three-dimensional left ventricular volume"],"prefix":"10.1007","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6180-661X","authenticated-orcid":false,"given":"Kazunori","family":"Okada","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masahiro","family":"Nakabachi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuhiro","family":"Hayashi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masaaki","family":"Shinagawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ayaka","family":"Yoshikawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kosuke","family":"Tsujita","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoichi","family":"Sakamoto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2023,9,21]]},"reference":[{"key":"626_CR1","doi-asserted-by":"publisher","first-page":"457","DOI":"10.1016\/S0046-8177(85)80082-4","volume":"16","author":"FG Dalldorf","year":"1985","unstructured":"Dalldorf FG, Willis PW. Angled aorta (\u201csigmoid septum\u201d) as a cause of hypertrophic subaortic stenosis. Hum Pathol. 1985;16:457\u201362.","journal-title":"Hum Pathol"},{"key":"626_CR2","doi-asserted-by":"publisher","first-page":"545","DOI":"10.1016\/S0894-7317(97)70009-9","volume":"10","author":"N Krasnow","year":"1997","unstructured":"Krasnow N. Subaortic septal bulge simulates hypertrophic cardiomyopathy by angulation of the septum with age, independent of focal hypertrophy. An echocardiographic study. J Am Soc Echocardiogr. 1997;10:545\u201355.","journal-title":"J Am Soc Echocardiogr"},{"issue":"3","key":"626_CR3","doi-asserted-by":"publisher","first-page":"247","DOI":"10.1111\/j.1540-8175.2008.00806.x","volume":"26","author":"T Diaz","year":"2009","unstructured":"Diaz T, Pencina MJ, Benjamin EJ, et al. Prevalence, clinical correlates, and prognosis of discrete upper septal thickening on echocardiography: the Framingham Heart Study. Echocardiography. 2009;26(3):247\u201353.","journal-title":"Echocardiography"},{"issue":"5","key":"626_CR4","doi-asserted-by":"publisher","first-page":"796","DOI":"10.1016\/j.amjcard.2014.05.068","volume":"114","author":"M Canepa","year":"2014","unstructured":"Canepa M, Malti O, David M, et al. Prevalence, clinical correlates, and functional impact of subaortic ventricular septal bulge (from the Baltimore Longitudinal Study of Aging). Am J Cardiol. 2014;114(5):796\u2013802.","journal-title":"Am J Cardiol"},{"issue":"4","key":"626_CR5","doi-asserted-by":"publisher","first-page":"4484","DOI":"10.1016\/j.ijcard.2013.06.129","volume":"168","author":"N Funabashi","year":"2013","unstructured":"Funabashi N, Umazume T, Takaoka H, et al. Sigmoid shaped interventricular septum exhibit normal myocardial characteristics and has a relationship with aging, ascending aortic sclerosis and its tilt to left ventricle. Int J Cardiol. 2013;168(4):4484\u20138.","journal-title":"Int J Cardiol"},{"issue":"6","key":"626_CR6","doi-asserted-by":"publisher","first-page":"341","DOI":"10.1002\/jcu.22126","volume":"42","author":"K Okada","year":"2014","unstructured":"Okada K, Mikami T, Kaga S, et al. Decreased aorto-septal angle may contribute to left ventricular diastolic dysfunction in healthy subjects. J Clin Ultrasound. 2014;42(6):341\u20137.","journal-title":"J Clin Ultrasound"},{"issue":"1","key":"626_CR7","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1016\/j.echo.2018.06.004","volume":"32","author":"C Mitchell","year":"2019","unstructured":"Mitchell C, Rahko PS, Blauwet LA, et al. Guidelines for performing a comprehensive transthoracic echocardiographic examination in adults: recommendations from the American Society of Echocardiography. J Am Soc Echocardiogr. 2019;32(1):1\u201364.","journal-title":"J Am Soc Echocardiogr"},{"issue":"6","key":"626_CR8","doi-asserted-by":"publisher","first-page":"428","DOI":"10.1016\/j.jjcc.2013.01.008","volume":"61","author":"A Tano","year":"2013","unstructured":"Tano A, Kasamaki Y, Okumura Y, et al. Major determinants and possible mechanism of dobutamine-induced left ventricular outflow tract obstruction in patients with a sigmoid ventricular septum. J Cardiol. 2013;61(6):428\u201335.","journal-title":"J Cardiol"},{"issue":"6","key":"626_CR9","doi-asserted-by":"publisher","first-page":"1099","DOI":"10.1536\/ihj.21-471","volume":"63","author":"Y Balaban","year":"2022","unstructured":"Balaban Y, Var\u0131m P. Relationship of aortoseptal angle with chronic hypertension, clinical and laboratory data. Int Heart J. 2022;63(6):1099\u2013106.","journal-title":"Int Heart J"},{"issue":"7","key":"626_CR10","doi-asserted-by":"publisher","first-page":"1211","DOI":"10.1007\/s10554-019-01536-6","volume":"35","author":"K Okada","year":"2019","unstructured":"Okada K, Kaga S, Tsujita K, et al. Right ventricular basal inflow and outflow tract diameters overestimate right ventricular size in subjects with sigmoid-shaped interventricular septum: a study using three-dimensional echocardiography. Int J Cardiovasc Imaging. 2019;35(7):1211\u20139.","journal-title":"Int J Cardiovasc Imaging"},{"issue":"2","key":"626_CR11","doi-asserted-by":"publisher","first-page":"248","DOI":"10.1111\/echo.15298","volume":"39","author":"D Tsuda","year":"2022","unstructured":"Tsuda D, Mori S, Izawa Y, et al. Diversity and determinants of the sigmoid septum and its impact on morphology of the outflow tract as revealed using cardiac computed tomography. Echocardiography. 2022;39(2):248\u201359.","journal-title":"Echocardiography"},{"issue":"1","key":"626_CR12","doi-asserted-by":"publisher","first-page":"70","DOI":"10.1016\/j.jash.2015.11.006","volume":"10","author":"PD Gaudron","year":"2016","unstructured":"Gaudron PD, Liu D, Scholz F, et al. The septal bulge: an early echocardiographic sign in hypertensive heart disease. J Am Soc Hypertens. 2016;10(1):70\u201380.","journal-title":"J Am Soc Hypertens"},{"issue":"9","key":"626_CR13","doi-asserted-by":"publisher","first-page":"1070","DOI":"10.1016\/S0002-9149(96)00542-5","volume":"78","author":"CJ Swinne","year":"1996","unstructured":"Swinne CJ, Shapiro EP, Jamart J, et al. Age-associated changes in left ventricular outflow tract geometry in normal subjects. Am J Cardiol. 1996;78(9):1070\u20133.","journal-title":"Am J Cardiol"},{"key":"626_CR14","doi-asserted-by":"publisher","first-page":"34","DOI":"10.1007\/s12574-017-0352-6","volume":"16","author":"S Kobayashi","year":"2018","unstructured":"Kobayashi S, Sakai Y, Taguchi I, et al. Causes of increased pressure gradient through the left ventricular outflow tract: a West Coast experience. J Echocardiogr. 2018;16:34\u201341.","journal-title":"J Echocardiogr"},{"issue":"9","key":"626_CR15","doi-asserted-by":"publisher","first-page":"579","DOI":"10.1016\/j.hlc.2011.05.002","volume":"20","author":"I Ranasinghe","year":"2011","unstructured":"Ranasinghe I, Yeoh T, Yiannikas J. Negative ionotropic agents for the treatment of left ventricular outflow tract obstruction due to sigmoid septum and concentric left ventricular hypertrophy. Heart Lung Circ. 2011;20(9):579\u201386.","journal-title":"Heart Lung Circ"},{"issue":"4","key":"626_CR16","doi-asserted-by":"publisher","first-page":"173","DOI":"10.1007\/s12574-018-0372-x","volume":"16","author":"Y Hirata","year":"2018","unstructured":"Hirata Y, Yamada H, Kusunose K, et al. Provocation of clinically significant left ventricular outflow tract obstruction by postural change in patients with sigmoid septum. J Echocardiogr. 2018;16(4):173\u20134.","journal-title":"J Echocardiogr"},{"issue":"14","key":"626_CR17","doi-asserted-by":"publisher","first-page":"1087","DOI":"10.1136\/heartjnl-2015-308764","volume":"102","author":"M Canepa","year":"2016","unstructured":"Canepa M, Pozios I, Vianello PF, et al. Distinguishing ventricular septal bulge versus hypertrophic cardiomyopathy in the elderly. Heart. 2016;102(14):1087\u201394.","journal-title":"Heart"},{"issue":"3","key":"626_CR18","doi-asserted-by":"publisher","first-page":"177","DOI":"10.1159\/000338827","volume":"2","author":"O Olafiranye","year":"2012","unstructured":"Olafiranye O, Ibrahim M, Kamran H, et al. Narrowed aortoseptal angle is related to increased central blood pressure and aortic pressure wave reflection. Cardiorenal Med. 2012;2(3):177\u201383.","journal-title":"Cardiorenal Med"},{"issue":"9","key":"626_CR19","doi-asserted-by":"publisher","first-page":"1339","DOI":"10.1016\/j.amjcard.2020.01.045","volume":"125","author":"F Loncaric","year":"2020","unstructured":"Loncaric F, Nunno L, Mimbrero M, et al. Basal ventricular septal hypertrophy in systemic hypertension. Am J Cardiol. 2020;125(9):1339\u201346.","journal-title":"Am J Cardiol"},{"issue":"4","key":"626_CR20","doi-asserted-by":"publisher","first-page":"173","DOI":"10.1253\/circrep.CR-21-0145","volume":"4","author":"T Nakayama","year":"2022","unstructured":"Nakayama T, Oshima Y, Shintani Y, et al. Ventricular sigmoid septum as a risk factor for anthracycline-induced cancer therapeutics-related cardiac dysfunction in patients with malignant lymphoma. Circ Rep. 2022;4(4):173\u201382.","journal-title":"Circ Rep"},{"issue":"1","key":"626_CR21","doi-asserted-by":"publisher","first-page":"75","DOI":"10.3390\/jcm11010075","volume":"11","author":"F Yal\u00e7in","year":"2021","unstructured":"Yal\u00e7in F, Yal\u00e7in H, K\u00fc\u00e7\u00fckler N, et al. Basal septal hypertrophy as the early imaging biomarker for adaptive phase of remodeling prior to heart failure. J Clin Med. 2021;11(1):75.","journal-title":"J Clin Med"},{"issue":"20","key":"626_CR22","doi-asserted-by":"publisher","first-page":"1799","DOI":"10.1016\/j.jacc.2012.01.037","volume":"59","author":"JL Dorosz","year":"2012","unstructured":"Dorosz JL, Lezotte DC, Weitzenkamp DA, et al. Performance of 3-dimensional echocardiography in measuring left ventricular volumes and ejection fraction: a systematic review and meta-analysis. J Am Coll Cardiol. 2012;59(20):1799\u2013808.","journal-title":"J Am Coll Cardiol"},{"issue":"4","key":"626_CR23","doi-asserted-by":"publisher","first-page":"413","DOI":"10.1016\/j.jcmg.2008.02.009","volume":"1","author":"V Mor-Avi","year":"2008","unstructured":"Mor-Avi V, Jenkins C, K\u00fchl HP, et al. Real-time 3-dimensional echocardiographic quantification of left ventricular volumes: multicenter study for validation with magnetic resonance imaging and investigation of sources of error. JACC Cardiovasc Imaging. 2008;1(4):413\u201323.","journal-title":"JACC Cardiovasc Imaging"},{"issue":"4","key":"626_CR24","doi-asserted-by":"publisher","first-page":"281","DOI":"10.1016\/j.jjcc.2012.11.005","volume":"61","author":"K Shibayama","year":"2013","unstructured":"Shibayama K, Watanabe H, Iguchi N, et al. Evaluation of automated measurement of left ventricular volume by novel real-time 3-dimensional echocardiographic system: validation with cardiac magnetic resonance imaging and 2-dimensional echocardiography. J Cardiol. 2013;61(4):281\u20138.","journal-title":"J Cardiol"}],"container-title":["Journal of Echocardiography"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s12574-023-00626-8.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s12574-023-00626-8\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s12574-023-00626-8.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,3,6]],"date-time":"2024-03-06T16:19:21Z","timestamp":1709741961000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s12574-023-00626-8"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,9,21]]},"references-count":24,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2024,3]]}},"alternative-id":["626"],"URL":"https:\/\/doi.org\/10.1007\/s12574-023-00626-8","relation":{},"ISSN":["1349-0222","1880-344X"],"issn-type":[{"value":"1349-0222","type":"print"},{"value":"1880-344X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,9,21]]},"assertion":[{"value":"2 June 2023","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"31 August 2023","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"5 September 2023","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"21 September 2023","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"None to declare.\u00a0","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures followed were following the ethical standards of the responsible committee on human experimentation and with the Helsinki Declaration of 1964 and later versions. This study was approved as a retrospective observational study by the Research Ethics Committee of Japan Healthcare University (R04-7). As all examinations were performed within the scope of medical care, obtaining informed consent was waived. Instead of obtaining informed consent, the objectives and methods of the present study were shared with the public through a physical bulletin board; patients who did not wish to participate could request their data to be removed from the study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}