Guidelines & Algorithms
Interactive References
Chamber Quantification
2015 ASE/EACVI guidelines — normal values for LV size, EF, mass, GLS, RV dimensions and function, LA/RA volumes, aortic root, and IVC. Includes interactive calculators for EF, LV mass, RWT, FAC, and RIMP.
Right Heart & Pulmonary Hypertension
Interactive PH probability grading, normal value tables, RV function grading, RAP algorithm, pre- vs. post-capillary phenotyping, and WSPH group classification.
Diastolic Function
Step-by-step 2025 ASE diastolic function algorithm with LAP estimation, DD grading, special populations (AF, HCM, MR, MAC, PH), and normal ranges by age.
Strain Echocardiography
2025 ASE/EACVI consensus on myocardial deformation imaging — GLS acquisition, vendor variability, reference values, and clinical applications across cardiomyopathies, chemotherapy, and valvular disease.
Prosthetic Valve Function
Stenosis and regurgitation criteria for aortic, mitral, tricuspid, and pulmonary prostheses. Includes PPM thresholds, SVD criteria, hemodynamic calculators, multimodality imaging guidance, and normal reference values (Tables A1–A9) by valve type and size.
Stress Echocardiography
ASE guidelines for stress echo in ischemic heart disease — protocols (treadmill, bicycle, DSE), interpretation, diastolic stress testing, hemodynamic assessment in AS and MR, myocardial viability, and risk stratification.
Hypertrophic Cardiomyopathy
2022 ASE multimodality imaging guidelines — LVH phenotypes, LVOT gradient calculator, SCD risk stratification, family screening algorithm, diastolic function, and septal reduction therapy guidance.
Pericardial Disease
Multimodality imaging across the pericardial spectrum — acute and recurrent pericarditis, tamponade physiology and Doppler criteria, constrictive pericarditis diagnosis, and a step-by-step CP vs. RCM differentiation algorithm.
Calculators
Quantitative Tools
MR & TR Quantification
PISA/EROA, continuity equation, regurgitant volume and fraction for mitral and tricuspid regurgitation. Severity grading per AHA/ACC and ESC guidelines.
Aortic Stenosis
AVA by continuity equation, dimensionless index, projected AVA, low-flow/low-gradient classification, and dobutamine stress echo adjudication of pseudo-severe AS.
Echo Swan
Noninvasive intracardiac pressure estimation. Calculates RAP, RVSP, PASP, PAEDP, mPAP (4 methods), PVR, LAP, LVSP, and LVEDP with a hemodynamic summary.
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⚠️ Clinical Disclaimer: All tools on Echo Info are intended for educational and computational use by trained echocardiographers and cardiologists. Results must be interpreted in the context of a complete clinical and echocardiographic evaluation. These tools do not replace individual clinical judgment or direct patient assessment.