selective focus close up doctor performing sonogram on pregnant woman / monitor in background - ultrasound scan 個影片檔及 b 捲影像00:08
cu echocardiogram ultrasound of heart beating on computer / vermont, usa - ultrasound scan 個影片檔及 b 捲影像00:06
ultrasound sonogram monitor for the fetus 22 weeks young adult patient pregnant - ultrasound scan 個影片檔及 b 捲影像00:07