Waves
The SI unit that measures the intensity of a sound wave.
What is the Pa?
An alternative to piezoelectric crystals.
What is a CMUT?
This causes speckle.
What is wave interference?
This is capable of measuring peak velocity at a specific depth.
What is spectral doppler?
The reduction in wave amplitude as it propagates through tissue.
What is attenuation?
The approximate speed of sound in soft tissue.
What is 1540 m/s?
A three letter acronym that determines the penetration depth of a sound pulse.
What is PRP?
The easiest way to identify or reduce artefacts.
What is 'move the transducer'?
The term used to describe a misrepresentation of high velocities as low velocities.
What is aliasing?
The tissue property used to compute the percent reflection at a boundary.
What is acoustic impedance?
The frequency range used in diagnostic medical sonography.
What is 2 to 20 MHz?
A collection of elements used to create a scanline.
What is a subgroup?
A method to reduce shadowing using multiple steering angles.
What is spatial compounding?
The type of doppler that is sensitive to low flow velocities.
What is power doppler?
Adipose tissue and lung tissue are examples of this.
What are tissues with reduced sound propagation speeds?
A dynamic propagating disturbance from equilibrium.
What is a wave?
This determines the axial resolution of a sound pulse.
This has better resolution and lower penetration.
What are high frequency waves?
The direction relative to the transducer when blood flow is moving toward the transducer and invert is on.
What is red?
The direction of wave travel is changed according to this law.
What is Snell's Law?
The frequency of sound associated with a 154 micrometer wave in soft tissue.
What is 10 MHz?
The number 7 represented in base 2.
What is 111?
The name used to describe sound waves bouncing back and forth between boundaries.
What is reverberation?
The suggested insonification angles for doppler.
What is between 30 and 60 degrees?
The SI units for RIL.
What is a dB?