TTEView: Echo Scan Simulator

TTEView lets you practice the three steps of transthoracic echocardiography (TTE) on your iPhone, held sideways: finding the view, measuring, and grading. BUILT AND SUPERVISED BY A PRACTICING PHYSICIAN The scanning steps, the timing and position of each measurement, and the grading criteria are checked one by one against the guidelines and clinical practice. A REAL 3D MODEL, TUNED FOR NORMAL ANATOMY The normal heart was rebuilt for this app from real human anatomical data (Human Reference Atlas). These checks run automatically: - No holes in the walls and no chambers touching that should not (all 20 frames of the beat) - Pulmonary valve anterior, left and superior to the aortic valve; left atrium behind the aortic root; RV right-anterior to the LV; the LV forms the apex - Septal tricuspid leaflet slightly apical to the mitral valve (within the normal range) - Two LV papillary muscles; three RV papillary muscle groups and a moderator band - LV and RV volumes, wall thickness, LA size and RV diameters within ASE normal ranges - Continuous great vessels from the aorta to the descending aorta, both venae cavae and the pulmonary veins - The heart sits inside the rib cage The heartbeat follows the order of electrical activation. Change how you hold the probe, and the echo image of that plane is generated on the spot. WHO IT IS FOR - Beginners who want to find the standard views themselves - Anyone who wants to check where and at which phase to measure LVDd, Simpson's biplane, E/e' and TAPSE - Anyone who wants to practice the whole flow from measurements to guideline-based grading SCANNING - Choose an acoustic window on the body (left parasternal 3rd-5th intercostal spaces, apical, subcostal). Touch the right side of the screen to tilt the probe; swipe the left side to rotate it - The frame turns green when you hit one of 11 standard views (PLAX, PSAX at four levels, apical 4-, 5-, 2- and 3-chamber, subcostal 4-chamber, IVC) - When you are off, the app shows how many degrees to rotate or tilt to reach the nearest view - The echo image is formed the way ultrasound images are (scattering, beam width, specular reflection). Color Doppler shows the flow through the valves MEASUREMENTS (25) - LV: IVSd, LVDd, PWd, LVDs, Simpson's method (A4C and A2C), M-mode LVIDd/LVIDs with FS and EF (Teichholz) - Diastolic function: E, A, DT, e' (septal and lateral), LA volume - Right heart: TAPSE, TR velocity, IVC diameter (expiration and inspiration) - Aortic valve: LVOT diameter, LVOT VTI, AV Vmax, AV VTI - You place the M-mode line, the pulsed-wave Doppler gate and the continuous-wave line yourself. The waveform changes with your placement, and the app tells you whether the placement is right - "Show how to measure" walks you through the correct frame and where to put each point GRADING - Based on ASE/EACVI 2015 (chamber quantification), ASE 2025 (diastolic function), ASE 2010 (right heart), ESC/ERS 2022 (pulmonary hypertension) and ACC/AHA 2020 (valvular heart disease) - Reference values and sources (papers with DOIs) are available in the app WHAT MAKES IT DIFFERENT - You find each view with your own fingers (window, tilt, rotation) instead of jumping to it, with guidance on how far to move - "Show me" places the probe where the view appears - Measurements are scored against the correct value on the same image, and the correct method is drawn step by step - You place the M-mode line, PW gate and CW line yourself, and the placement is graded - Physics-inspired echo images and color Doppler - Anatomy mode (Pro): slice the real 3D model along the probe plane - No network, no ads, no account. One-time purchase, not a subscription FREE AND PRO - Free: scanning (grading, guidance and "Show me" for all 11 views) and the LVDd measurement - Pro (one-time purchase): all 25 measurements, guideline-based grading and anatomy mode PRIVACY The app has no network features. It collects nothing and sends nothing. No account is needed.