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An ultrasound image of a fetus.

Words to Understand in This Chapter

allied health care professions— professions, aside from pharmacy or nursing, that make the health care system function by providing diagnostic or technical care or therapy to patients. conductive gel— a specialized water-based gel used to help ultrasound waves pass from the wand through the skin in a more efficient manner. noninvasive— referring to a medical procedure that does not require making cuts in or inserting instruments into the body. sonography— the analysis of sound waves using a device that creates a graphical representation, or picture, of the frequencies.