PPT-3 Waves – Part D3 Ultrasound

Extension Only iGCSE Edexcel 19 Mr Powell 1 Forces and Motion 2 Electricity 3 Waves 4 Energy 5 Solid Liquids Gases 6 Magnetism 7 Radioactivity 8 Astrophysics Lesson 3 Exploring Ultrasound. Diagnostic Ultrasound. High frequency sound waves emitted from sound source (transducer). Transducer placed on patient’s body. Sound waves echo off interfaces of internal structures and return to transducer. Doppler Effect. ~apparent change in frequency of a wave due to the motion of the source of the wave.. If the object is moving towards the observer the frequency will appear to increase. If the object is moving away from the observer the frequency will appear to decrease. RUSH: Overview. Early recognition and treatment of shock decreases mortality. Bedside ultrasound can rapidly evaluate for reversible causes of shock in the undifferentiated patient. Randomized, controlled trial of immediate versus delayed goal-directed ultrasound to identify the cause of . STORAGE. Norman “N.J.” Lefort Jr.. LOOP (Louisiana . Offshore Oil Port). 10 Years : 7 Years as Maintenance Tech. 3 Years as Reliability Tech. . Certification: Vibration Analyst Cat 1 Airborne Ultrasound Level 1 . Wendy Blount, DVM. Suzy. 6 yr old SF Chihuahua Mix. Volunteer Victim for ultrasound upgrade Demo. Suzy. 6 yr old SF Chihuahua Mix. Volunteer Victim for ultrasound upgrade Demo. Suzy. 6 yr old SF Chihuahua Mix. Learning Objectives. To recognize the indications for and clinical utility of H&N ultrasound.. To identify normal H&N anatomy. To know basic ultrasound machine capabilities and control functions. Before the waves are made the particles are same distance apart. While waves moves through the medium the particles . compress. together, then they spread further apart (stretched areas)- . rarefaction.. sound.  pulses are produced by a transmitter and directed into the body. As in sonar, reflections occur. They occur each time a pulse encounters a boundary between two tissues that have different densities or a boundary between a tissue and the adjacent . Wave. Repeating disturbance or movement. Carries energy through matter and space. Vibrations. Anything that moves in a rhythmic patter. Up and down. Back and forth. What is a Wave. All waves are produced when something vibrates. Get 1 full page and 1 half page of paper. Fold full sheet of paper. about 1-1.5” short of even. Insert half sheet in the middle. Staple . across . the fold. Pick up the top two pages and starting from the bottom, cut the top two . Periodic Motion. Motion that repeats in a regular cycle is called . periodic motion. . . The revolution of a planet about its sun is an example of periodic motion. The highly reproducible period (T) of a planet is also called its year.. Why Ultrasound?. Over half a century old technique! . Arguably the most widely used imaging technologies in medicine. . Portable, free of radiation risk, and relatively inexpensive compared to MRI, CT and PET. Earthquakes-Tsunamis. Graviational. attraction-Tides. Wind waves move energy, not matter. Wind waves- Growth. Wind strength- must be moving faster than waves. Wind duration-longer creates larger waves. The Scottish physicist James Clerk Maxwell (1831–1879) was the first person to truly understand the fundamental nature of light. . He proved in 1865 that an electromagnetic disturbance should propagate in free space with a speed equal to that of light..