Usagi, a Japanese unisex given name, used by Usagi Tsukino or Sailor Moon, the main character in Sailor Moon Usagi Chibiusa Tsukino or Chibiusa, a character in Sailor Moon
It is a fast, easy and painless evaluation that uses ultrasound waves to produce images of the heart. In North America, the test is performed by a specially trained technologist, called a sonographer, and is interpreted by a specially-trained physician, usually a cardiologist, trained in reading heart ultrasounds.
It can show if your baby is getting enough oxygen. The ultrasound can show the heart but you won't be able to hear it. You are in the phase of pregnancy when the fetal heart beats can be heard for the first time. The doctor will use the Doppler instrument to detect the heart beats.