Exam 3: Transducers

Intravascular imaging generally utilizes a frequency range ________.

In a single-element transducer,additional beams not included in the ultrasound beam are called _____________.

___________ array is the combination of linear and phased array operations.

In a curved array,the pulses travel ________.

Arrays have additional beams resulting from their multi-element structure called ________.

Coupling medium is applied to the transducer-tissue boundary to increase _________ of the sound wave.

The impedance of the matching layer is ________.

Utilizing multiple focal zones simultaneously increases image detail resolution and degrades ________.

Axial resolution is the ________.

The distance from the transducer to the center of the focal region is called the ________.

As sound travels,the width of the beam remains unchanged.

Focusing in the section-thickness plane reduces section thickness artifact.

Linear and convex are types of ________ arrays.

Beam width can be reduced by focusing to improve lateral resolution.

With a linear phased array transducer,the elements measure the width of about ________.