CloudSono Calcfor Sonographers
by CloudSono.AI

Welcome to CloudSono Calc

Educational ultrasound calculators • Built for sonography students, sonographers, and educators

Echo Calculator

  1. Height & Weight

    Height (cm)
    Height (in)
    Weight (kg)
    Weight (lb)
    Heart Rate (bpm)
    Age (years)
    Optional — used for age-adjusted diastolic thresholds

  2. Guideline sentence (adult echo)

    Measurement
    Aortic valve mean pressure gradient
    value
    mm Hg
    Source: Acceleration Time in Aortic Stenosis.pdf (2021)
    enter remaining fields
    Aortic valve mean pressure gradient
    StratumRange / CutoffYour value
    Does not meet cited cutoff<40 mm Hg
    At or above cited severe AS threshold≥40 mm Hg

    Cited cutoff ≥40 mm Hg: at or above cited severe as threshold. Values outside it do not meet this cutoff.

    • Applies to AS with preserved LVEF (as cited).

    Source: Acceleration Time in Aortic Stenosis.pdf (2021)

    Educational only. Not a diagnosis. Cutoffs are cited from the source filename/year on each row and are mixed-society.

    Educational only. Not a diagnosis. Cutoffs are cited from the source filename/year on each row and are mixed-society.

  3. ASE DD / LAP checklist (educational)

    Steps for diagnosing LV diastolic dysfunction

    Chips are algorithm figures from Nagueh et al., JASE 2025 (https://doi.org/10.1016/j.echo.2025.03.011). Choose the figure that matches the patient. Figure 5 (heart transplant) is not implemented.

    e′ septal (cm/s)
    e′ lateral (cm/s)
    e′ average (cm/s)
    Optional if septal+lateral entered
    E/e′ average
    Or derive from E + e′
    E/e′ septal
    E/e′ lateral
    E (cm/s)
    A (cm/s)
    E/A
    Optional if E and A entered
    LAVI (ml/m²)
    LARS (%)
    • Missing required input: e′ (septal and/or lateral and/or average)
    Enter e′ to evaluate Figure 2.

    Educational only. Not a diagnosis.

    Nagueh SF, et al. J Am Soc Echocardiogr. 2025;38:537-569. doi:10.1016/j.echo.2025.03.011

  4. LV Geometry & Function

    IVSd (cm)
    IVSs (cm)
    LVIDd (cm)
    LVIDs (cm)
    LVPWd (cm)
    LVPWs (cm)
    EDV (mL)
    ESV (mL)

    Educational only. Not a diagnosis.
    Lang RM, et al. JASE 2015;28:1-39.

  5. Aortic Stenosis / TAVR Follow-up

    Prosthetic Valve / TAVR
    Vmax (m/s)
    Mean Grad (mmHg)
    LVOT (cm)
    LVOT VTI (cm)
    AV VTI (cm)
    Planimetry (cm²)

    Educational only. Not a diagnosis.
    Baumgartner H, et al. JASE 2017;30:372-392.

  6. Hemodynamics

    LVOT (cm)
    LVOT VTI (cm)

  7. Low-Flow Low-Gradient AS

    Baseline AVA (cm²)
    Baseline MG (mmHg)
    Baseline SVI (mL/m²)
    Baseline LVEF (%)
    DSE AVA (cm²)
    DSE MG (mmHg)
    DSE SVI (mL/m²)
    DSE Vmax (m/s)

    Educational only. Not a diagnosis.
    Baumgartner H, et al. JASE 2017;30:372-392.

  8. Mitral Stenosis

    PHT (ms)
    Mean Grad (mmHg)
    Planimetry (cm²)
    PASP (mmHg) — optional

    HR uses the Height & Weight card value when grading mean gradient. If blank: report HR with gradient.

    Educational only. Not a diagnosis.
    Baumgartner H, et al. JASE 2009;22:1-23. Nishimura RA, et al. JACC 2014.

  9. PHTN (Pressures)

    TR Vmax (m/s)
    RAP (mmHg)
    RVOT AT (ms)

    Educational only. Not a diagnosis.
    TR Bernoulli + RAP; RVOT AT empiric — supportive only.

  10. PHTN (Confidence)

    TAPSE (cm)
    PR EDV (m/s)

    This is an echo probability / supportive score only, not a diagnosis of pulmonary hypertension. Confirmation requires right-heart catheterization. Integrate with TR Vmax / RVSP from the Pressures card, RV size/function, and other signs.

    Calculated values (tap to see which inputs they use)

    Educational only. Not a diagnosis.
    Echo probability score, not a PH diagnosis.

  11. Mitral Regurgitation

    Jet Origin
    MV Morphology
    Vena Contracta (cm)
    EROA entered (cm²)
    Regurgitant Volume (mL)
    Regurgitant Fraction (%)
    Jet Area / LA Area (%)
    PISA Radius (cm)
    Aliasing Velocity (cm/s)
    Peak MR Velocity (cm/s)
    MR VTI (cm)
    MVA Planimetry (cm²)
    Forward Mean PG (mmHg)
    ASE 2017 primary MR — quantitative ranges (your values highlighted)
    ParameterMildModerateSevereYour value
    Vena contracta (cm)<0.30.3 to <0.7≥0.7–
    EROA (cm²)<0.20.2 to <0.4≥0.4–
    Regurgitant volume (mL)<3030 to <60≥60–
    Regurgitant fraction (%)<3030 to <50≥50–

    Educational only. Not a diagnosis.
    Zoghbi WA, et al. JASE 2017;30:303-371.

  12. Edge-to-edge / TEER echo descriptors

    Jet Origin
    Morphology
    VC (cm)
    EROA entered (cm²)
    EROA PISA (cm²)
    Mean gradient (mmHg)
    MVA planimetry (cm²)
    Residual MR grade (optional)

    Educational only. Not a diagnosis.
    Little SH, Quader N, et al. JASE 2026;39:529-550.
    Supporting: Zoghbi WA, et al. JASE 2019;32:431-475 (residual after percutaneous repair); Zoghbi WA, et al. JASE 2017;30:303-371 (native MR — note PISA limits post-TEER).