Transesophageal Echocardiography training Online

This is the first website with online Transesophageal Echocardiography simulator dedicated for medical professionals. It is based on MrTeemothy® and helps to:

  • understand the three-dimensional anatomy of the heart
  • learn how to obtain standard TEE views in individual patients
  • substantially shorten the TEE learning curve
  • rapidly improve skills of both beginner and advanced imagers
  • practice TEE guidance of structural heart interventions
  • test TEE skills.

You can book your session here.

Please read undermentioned manual before starting your session. It will save time during the examination.

Manual – TEE online

The cases selection

Clicking the Start icon opens a list of cases with short descriptions.

Clicking any of the cases with a left mouse button starts the simulation

The simulation screen

The user interface window layout has 5 main sections: Top main menu (1), TEE sector view (2), TEE probe control panel (3), heart visualization sector (4) and the bottom bar (5).

Figure 1. Window layout sections.

Main menu

The main menu bar contains the following icons (hover over any of the icon to see its function, some of them are clickable):

start stop freeze measure marks lines spheres clear marks info edu TEE panel xPlane Zoom3D Color
Figure 2. Top Main Menu Bar.

Brightness and contrast of the 2D TEE images can be adjusted by clicking on the TEE image and dragging up-down or left-right respectively.


Activates the cross-type markers which can be placed in the 3D space of the heart by pointing to a selected location on the image and double clicking with the left mouse button. Prior to clicking, the color of the marker may be selected in the color picker panel which is displayed in the control panel menu. Each marker can be erased by double clicking it with the right mouse button.

Figure 3. Marker Color Picker.


Connects two markers of the same color with a laser line, visible in 2D and 3D modes.

Figure 4. Color markers connected with line.

TEE control panel

The TEE control panel shows the position and orientation of the TEE probe and imaging plane. Using a mouse the User can change each of the manipulators settings. It can be manipulated by dragging or using the mouse scroll wheel when the coursor is on the given control. Hover over any of the manipulators to see its function.

markers probe depth Plane rotation Right left Anteflex Probe rotation Scan depth
Figure 5. The TEE probe control panel.

Right-left flexion of the probe tip (RIGHT / LEFT angle given in degrees)

Probe depth in the esophagus. SCAN DEPTH indicator shows the depth of scanning in cm

Rotation of the probe in the esophagus (clockwise/counterclockwise rotation given in degrees, related to anterior orientation

Anterior – posterior flexion of the probe tip (ANTEFLEX / RETROFLEX angle given in degrees)

TEE omniplane rotation angle given in degrees

Marker color picker

Scan depth, can be changed with a mouse

Below the TEE panel, the animated model of the heart with superimposed TEE imaging plane is displayed. The model can be rotated with the mouse and enlarged using the mouse wheel. The panel can be detached from the original position, moved with the mouse to the desired location on the screen and resized by dragging the edge/corner of the window. By clicking CUT the section of the model corresponding to the TEE plane orientation can be displayed. Clicking FLIP causes display of the opposite part of the section.

Figure 6. The screen with activated TEE panel. A – Basic view, B – cut view and C – cut and flip view.

xPlane mode

The xPlane mode line can be moved left-right using a slider at the bottom of the screen.

Figure 7. The xPlane mode. The two perpendicular planes are shown on a model of the heart. The lower panel contains the Xplane slider and a Right invert button.

Doppler mode

The Doppler panel contains manipulators used to adjust the Doppler scale, baseline shift and low velocity filtering.

Figure 8. The Doppler settings and their influence on the color display.

3D mode

Clicking the Zoom 3D button (Fig. 9. Nr 1) activates two boxes that let the user select the region of interest (ROI) on both xPlane views, using a mouse (Fig. 9. Nr 2 and 3).

Figure 9. Preparing for 3D imaging by selecting the region of interest using the mouse or the optional ultrasound control panel.

The second click on the Zoom 3D button (Fig. 9. Nr 4) switches on the 3D rendering function.

The Gain should be adjusted (usually, initially significantly decreased) to optimally visualize the cardiac structures. Z rotation is used to rotate the model on the screen (Z axis being perpendicular to the screen).

Figure 10. 3D volume settings. Gain adjustment (A → B), Z-rotation to obtain a surgical MV view with aorta on top (B → C).

The 3D volume can be rotated (X and Y axes) by dragging the mouse.

Figure 11. 3D volume settings. Zooming in (A), obtaining the view from the left ventricle by rotating the volume (A → B).

Technical requirements

In order to have the best possible experience working in eTEEmothy simulator, please make sure your device meets the following minimum or recommended system requirements:

CPU2,2 GHz (dual-core)2,8 GHz (dual-core)
Memory4 GB8 GB
Network bandwidth5 Mb/s10 Mb/s

It is also recommended to use Firefox or Chrome network browser. Application performance also depends on the number of browser tabs and other applications open at a time.

For comfortable navigation it is highly recommended to use mouse with scroll wheel instead of touch-pad/touchscreen.

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