Stories That Inspire Global Impact

In physics, impedance is the opposition a system presents to the flow of energy. In the context of medical ultrasound, acoustic impedance is a critical property of tissue, defined as the product of tissue density and the speed of sound within that tissue. This fundamental concept dictates how sound waves behave at interfaces between different…

In physics, the Doppler effect describes the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. When the source and observer are moving closer, the frequency appears higher (shorter wavelength), and when they are moving apart, the frequency appears lower (longer wavelength). This…

In ultrasound physics, Pulse Repetition Frequency (PRF) is a critical parameter referring to the number of ultrasound pulses emitted by the transducer per second. Measured in Hertz (Hz) or kilohertz (kHz), PRF directly influences the maximum depth from which echoes can be accurately received before the next pulse is sent. A higher PRF allows for…