Intraoperative long-axis TEE view showing part of the left atrium, the left ventricle and the left ventricular outflow tract, before repair with the HARPOON device. The measurement of the tissue/gap-ratio is demonstrated. Tissue-length (red), 2.1 cm; gap-length (blue), 0.97 cm. Tissue/gap-ratio = 2.1/0.97 = 2.2.