1 The mechanical horsepower, also known as imperial horsepower, of exactly 550 foot-pounds per second is approximately equivalent to 745.7 watts. 2  The metric horsepower of 75 kgf-m per second is approximately equivalent to 735.5 watts or 98.6% of an imperial mechanical horsepower.
An ultrasound scan, also referred to as a sonogram, diagnostic sonography, and ultrasonography, is a device that uses high frequency sound waves to create an image of some part of the inside of the body, such as the stomach, liver, heart, tendons, muscles, joints and blood vessels.
An ultrasound, also know as a sonogram, is a test done during pregnancy which uses sound waves to generate a picture or image of the fetus. Occasionally, but not always, infants with Down syndrome show subtle signs on an ultrasound that can make your doctor suspect that the fetus has Down syndrome.