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EP10.26: A case of fetal isolated total anomalous pulmonary venous connection with severe pulmonary vein obstruction

diagnosis in 2011-2013 showed obvious abnormal findings of three vessel view and four chamber view with B mode. The detection rate of isolated ventricular septal defect (VSD) was elevated from 10% to 42.9% using colour Doppler in 2014-2016 because cases of isolated VSD became easier to detect. Conclusions: We revealed that the detection rate of CHDs especially isolated VSD was increased by using colour Doppler. We thought that appropriate setting of colour Doppler, confirmation of the image of crux and confirmation by clips are critical to improve the detection of VSDs.