Which item is a diagnostic tool? an ultrasound a surgical scalpel a petri dish a syringe

An ultrasound can diagnose any known problems to a baby, or fetus. 

Ultrasound is used to create images of soft tissue structures, such as the gallbladder, liver, kidneys, pancreas, bladder, and other organs and parts of the body.Ultrasound can also measure the flow of blood in the arteries to detect blockages.Ultrasound testing is safe and easy to perform.

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