Limitations
There are still many limitations to our research. Firstly, the sample
size of our study was not large enough, and the follow-up time was not
long enough to track the clinical event. But we follow up time was more
frequent could detect the early cardiac change in time. Secondly, 3D
echocardiography requires a clear and complete endocardial surface,
which requires high image quality, and the images we choose were
relatively clear and complete. In patients with left mastectomy, the
early data cannot be improved one week after the operation due to
incision and hematoma, and the late acoustic transparency is worse than
that of patients with right mastectomy. Therefore, the number of
patients with left mastectomy is small, and the selection of patients’
samples was relatively limited.