There is essentially no difference between ultrasonography and sonography; they are often used interchangeably to refer to the same diagnostic imaging technique using ultrasound. Sonography is the application of ultrasound technology in medicine, while ultrasonography refers more directly to the ultrasound imaging process itself.
Here's a more detailed breakdown:
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Ultrasonography: This term emphasizes the "ultra sound" aspect of the procedure - the use of high-frequency sound waves to create images of internal body structures.
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Sonography: This term focuses on the "graphy" aspect - the act of creating a visual representation (a sonogram or ultrasound image). A sonographer is the trained medical professional who performs the ultrasonography.
In practice, these terms are used synonymously in medical contexts. A healthcare provider might order either an "ultrasound" or a "sonogram," and both will involve the same technology and procedure. You might see "ultrasonography" used in more formal or technical documentation, while "sonography" or "ultrasound" might be preferred in more conversational settings.
Think of it like this: sonography is the field of study/practice, and ultrasonography is a key process within that field.
