ultrasound device

#Electrotherapy_Physical_Therapy -Electromagnetic spectrum link: فيديو    • الطيف الكهرومغناطيسي (Electromagnetic spec...   -Shockwave therapy link:فيديو    • Shockwave therapy(كل حاجه محتاج تعرفها عن ...   -فيديو كيف يدرك المخ وجود الالم؟؟؟؟!!! (Introduction)    • كيف يدرك المخ وجود الالم؟؟؟؟!!! (Introduct...   -فيديو كيفيه انتقال اللألم :    • كيف يدرك المخ وجود الالم ؟(الجزء الثاني) (...   -فيديو Gate control therory & Pain modulation:    • Gate control theory,Descending analgesic s...   محتوي فيديو انهاردا: Ultrasound device is: a device which produces sound waves with high frequencies and speed faster than the sound waves therapeutic ultrasound wave is a mechanical wave,acoustic energy and deep penetrating agent Principles of ultrasound production: we have 2 main principles 1-piezoelectric effect: This includes quartz crystal or Barium titanate creation electric voltage across the crystal as it is compressed or expanded 2- Reverse piezoelectric effect: The crystal is compressed or expanded under the effect of electrical current. Production of ultrasound effective radiating area sound wave proprtities: frequency velocity Biophysical properties of ultrasound: Propagation of ultrasound in soft tissue as longitudinal wave bone as transverse wave reflection and refraction absorption and penetration attenuation and scattering properties of the coupling medium the ultrasound beam physiological effects of ultrasound Thermal effect non-thermal effect Cavitation acoustic streaming and their effect on our bodies acoustic streaming #PT_بالعربي انتظروا الجزء الثاني غدا