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.
In obstetrics, sonography is used to determine the number, age, and location of a fetus, as well as to check for potential birth defects. It is also used to identify abnormalities in the abdomen, such as liver disease or gallstones. Sonograms can also be used to detect heart disease.