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, 1.98 cm; gap-length, 1.14 cm. Tissue/gap-ratio = 1.98/1.14 = 1.74. The anteroposterior diameter is 3.76 cm.