Diagnostic sonography uses high-frequency sound waves to produce images of inside of the body. The sonographer uses an instrument called an ultrasound transducer on the parts of the patient’s body that are being examined. The transducer emits pulses of sound that bounce back, causing echoes. The echoes are then sent to the ultrasound machine, which processes them and displays them as images used by physicians for diagnosing diseases and malfunction of organs. The use of sonography as a diagnostic tool is particularly important because it produces no harmful ionizing radiation, making it a safer option than Xrays or CT.
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