vivo 4dIn this study, we propose 4D Ultrafast vector flow imaging, through the use of 4D plane-wave ultrafast and cross-beam vector Doppler imaging in order to map in-vivo blood flows inOS- Ai Vivo 4D + 2D. 13)Do not use massager in close proximity to loose clothing or jewelry. 14)Keep long hair away from massager while in use. 15)Use heated surfaces carefully.May