The following procedure steps will take place:

• The study system is installed in the room before patient arrival
• The patient needs to fully undress the upper body before lying on the bed
• The 3 ECG electrodes are placed
• Ultrasound gel is applied on the ultrasound probe

The CardioKit prototype used in the study can monitor cyclical heart-beat motion, cyclical respiratory motion and non-cyclical heart position changes while the patient is lying in supine position.

The primary endpoint was defined as the percentage of patients able to obtain a positive result in a multi parametric score of image quality, consisting of:

Score = 1: average phase error per patient, defined as the difference between the phase of the cardiac cycle identified by the algorithm and the one evaluated by the ECG reference <0.1.

Score = 0: average phase error per patient ≥0.1.

For each patient, scoring was done for each imaging view (i.e., parasternal and apical). If the score was 2 (at least 1 point in A or B and 1 point in C or D) or greater for at least one of the imaging views, the outcome was considered as positive. The final result is the proportion of patients (in %) with a positive outcome, defined as the number of patients with a positive evaluation divided by the total number of patients x 100.

The primary endpoint was defined as the percentage of patients able to obtain a positive result in a multi parametric score of image quality, consisting of:

Score = 1: maximum excursion calculated by the algorithm <30 mm with a total 3D error in the calculation of the displacement <3 mm.

Score = 0: either maximum excursion calculated by the algorithm ≥30 mm or total 3D error in the calculation of the displacement ≥3 mm (or both).

For each patient, scoring was done for each imaging view (i.e., parasternal and apical). If the score was 2 (at least 1 point in A or B and 1 point in C or D) or greater for at least one of the imaging views, the outcome was considered as positive. The final result is the proportion of patients (in %) with a positive outcome, defined as the number of patients with a positive evaluation divided by the total number of patients x 100.

The primary endpoint was defined as the percentage of patients able to obtain a positive result in a multi parametric score of image quality, consisting of:

Score = 1: ability to identify visually by an experienced operator in the acquired image at least one of the following structures: left ventricular free wall, interventricular septum, mitral valve, or aortic valve.

Score = 0: inability to identify at least one of these structures.

For each patient, scoring was done for each imaging view (i.e., parasternal and apical). If the score was 2 (at least 1 point in A or B and 1 point in C or D) or greater for at least one of the imaging views, the outcome was considered as positive. The final result is the proportion of patients (in %) with a positive outcome, defined as the number of patients with a positive evaluation divided by the total number of patients x 100.