This is because the sound waves go through them with no echoes.
The person performing the scan (sonographer) will look at these different shades to interpret the images.
These appear white in the image, and soft tissues appear grey.
Fluids, such as the amniotic fluid surrounding your baby, appear black.
An ultrasound scan sends sound waves through your womb (uterus). The echoes are then turned into an image on a screen that shows your baby’s position and movements.
Hard tissues, such as bone, reflect the most sound waves and so make the biggest echoes.
You will probably be give you a printout of your baby by the sonographer as a keepsake, it is important to remember the main purpose of the scan.
Doppler Ultrasound – This imaging procedure measures slight changes in the frequency of the ultrasound waves as they bounce off moving objects, such as blood cells.
However, you will need to ask at the start of your scan, and your hospital may charge for this service.
Some private ultrasound clinics will allow you to download an image of your scan to your phone.
An ultrasound exam is a procedure that uses high-frequency sound waves to scan a woman’s abdomen and pelvic cavity, creating a picture (sonogram) of the baby and placenta.
Although the terms ultrasound and sonogram are technically different, they are used interchangeably and reference the same exam.