ABC | Volume 114, Nº3, March 2020

Original Article Sousa et al. Software: analysis of strain curves Arq Bras Cardiol. 2020; 114(3):496-506 1. Almeida ALC, Gjesdal O, Newton N, Choi EY, Teixido-Tura G, Yoneyama K, et al. Speckle Tracking echocardiografy – clinical applications. Rev Bras Ecocardiogr Imagem Cardiovasc. 2013;26(1):38-49. 2. Haugaa KH, Grenne BL, Eek CH, Ersbøll M, Valeur N, Svendsen JH, et al. Strain echocardiography improves risk prediction of ventricular arrhythmias after myocardial infarction. JACC Cardiovasc Imaging. 2013,6(8):841-50. 3. Mentz RJ, Khouri MG. Longitudinal strain in heart failure with preserved ejection fraction: is there a role for prognostication? Circulation. 2015;132(5):368-70. 4. Claus P, D’hooge J, Langeland TM, Bijnens B, Sutherland GR. SPEQLE (Software package for echocardiographic quantification LEuven) an integrated approach to ultrasound-based cardiac deformation quantification. Comput Cardiol. 2002;29:69-72. 5. D’hooge J, Bijnens B, Thoen J, Van de Werf F, Sutherland GR , Suetens P. Echocardiographicstrainandstrain-rate imaging:anewtooltostudyregional myocardial function. IEEE Trans Med Imaging. 2002;21(9):1022-30. 6. Mada RO, Lysyansky P, Daraban AM, Duchenne J, Voigt JU. How to define end-diastole and end-systole?: impact of timing on strain measurements. JACC Cardiovasc Imaging. 2015;8(2):148-57. 7. Voigt JU, Pedrizzetti G, Lysyansky P, Marwick TH, Houle H, Baumann R, et al. Definitions for a common standard for 2D speckle tracking echocardiography: consensus document of the EACVI/ASE/Industry Task Force to standardize deformation imaging. Eur Heart J Cardiovasc Imaging. 2015;16(1):1-11. 8. Kaseno H, Toyama T, Okaniwa H, Toide H, Yamashita E, Kawaguchi R, et al. Diastolic stunning as a marker of severe coronary artery stenosis: analysis by Speckle Tracking radial strain in the resting echocardiogram. Echocardiography. 2016;33(1):30-7. 9. Bland JM, AltmanDG. Measuring agreement inmethod comparison studies. Stat Methods Med Res. 1999;8(2):135-160. 10. Hirakata VN, Camey SA. Análise de Concordância entreMétodos de Bland- Altman. Rev HCPA. 2009;29(3):261-268. 11. Walmsley J, Arts T, Derval N, Bordachar P, Cochet H, Ploux S, et al. Fast simulationofmechanicalheterogeneity intheelectricallyasynchronousheart using the multipatch module. PLoS Comput Biol. 2015;11(7):e1004284. 12. Aalen J, Storsten P, Remme EW, Sirnes PA, Gjesdal O, Larsen CK, et al. Afterload hypersensitivity in patients with left bundle branch block. JACC Cardiovasc Imaging. 2019;12(6):967-977. 13. Koeken Y, Arts T, Delhaas T. Simulation of the Fontan circulation during rest and exercise. Conf Proc IEEE Eng Med Biol Soc. 2012;2012:6673-6. 14. Lumens J, Delhaas T. Cardiovascular modeling in pulmonary arterial hypertension: focus on mechanisms and treatment of right heart failure using the CircAdapt model. Am J Cardiol. 2012;110(6):39s-48s. 15. Tabassian M, Alessandrin M, Herbots L, Mirea O, Pagourelias ED, Jasaityte R, et al. Machine learning of the spatio-temporal characteristics of echocardiographic deformation curves for infarct classification. Int J Cardiovasc Imaging. 2017;33(8):1159-67. 16. Farsalinos KE, Daraban AM, Ünlü S, Thomas JD, Badano LP, Voigt JU. Head- to-Head Comparison of Global Longitudinal Strain Measurements among Nine Different Vendors: the EACVI/ASE Inter-Vendor Comparison Study. J Am Soc Echocardiogr. 2015;28(10):1171-1181. 17. Nagata Y, Takeuchi M, Mizukoshi K, Wu VC, Lin FC, Negishi K, et al. Intervendor variability of two-dimensional strain using vendor-specific and vendor-independent software. J AmSoc Echocardiogr. 2015;28(6):630-41. 18. Mirea O, Pagourelias ED, Duchenne J, Bogaert J, Thomas JD, Badano LP, et al. Intervendor Differences in the Accuracy of Detecting Regional Functional Abnormalities: A Report From the EACVI-ASE Strain Standardization Task Force. JACC Cardiovasc Imaging. 2018;11(1):25-34. 19. Loizou CP, Pattichis CS, D’Hooge J. Handbook of speckle filtering and tracking in cardiovascular ultrasound imaging and video. 1st ed. London: Institution of Engineering and Technology; 2018. 20. Joos P, Porée J, Liebgott H, Vray D, Baudet M, Faurie J, et al. High-frame-rate speckle-tracking echocardiography. IEEE Trans Ultrason Ferroelectr Freq Control. 2018;65(5):720-8. References Study Association This study is not associatedwith any thesis or dissertationwork. Ethics approval and consent to participate This study was approved by the Ethics Committee of the Hospital Beneficência Portuguesa de São Paulo under the protocol number CAEE 91350318.4.0000.5483. All the procedures in this study were in accordance with the 1975 Helsinki Declaration, updated in 2013. Informed consent was obtained from all participants included in the study. *Supplemental Materials For additional information, please click here. 505