character: Mr. Johnson
topic: Applications of Ultrasound in Medicine
grade: 11
subject: Physics
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character: Dr. Smith
topic: Principles of Ultrasound Imaging
grade: 11
subject: Physics
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character: Ms. Roberts
topic: Physics of Sound Waves in Medical Diagnostics
grade: 11
subject: Physics
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character: Mr. Lee
topic: Innovations in Ultrasound Technology
grade: 11
subject: Physics
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