Physics

Category Physics Term Backscatter Definition of Backscatter Scattering Of Ultrasound Energy Back Toward The Transducer From Tissue Microstructure Notes About Backscatter Basis For Image Texture And Speckle

Category Physics Term Near Field (Fresnel Zone) Definition of Near Field (Fresnel Zone) Region Close To The Transducer Where Beam Is Not Fully Formed Notes About Near Field (Fresnel Zone) Image Quality Varies With Probe Design

Category Physics Term Main Magnetic Field (B0) Definition of Main Magnetic Field (B0) Static Uniform Magnetic Field That Aligns Nuclear Spins Notes About Main Magnetic Field (B0) Measured In Tesla; Typical Clinical Systems 0.5–3.0 T

Category Physics Term Attenuation Definition of Attenuation Loss of Ultrasound Energy as It Travels Through Tissue Due to Absorption and Scattering Notes About Attenuation Higher With Bone and Air

Category Physics Term Acoustic Impedance Definition of Acoustic Impedance Resistance Of Tissue To Ultrasound Wave Propagation Determined By Density And Sound Speed Notes About Acoustic Impedance Mismatch Between Tissues Produces Reflections