Cathie's chart in study table form - click "hide all" then "shuffle" to begin

Quiz yourself by guessing what should be in each of the black rectangles below before clicking on it to display the answer.

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Transducer

Operates by:

Is it steered? How?

Is it focused? How?

Image shape

Electronic or Mechanical?

Linear sequenced array

sequencing

no – fixed focus

rectangle

Electronic

Curved sequenced array

sequencing

yes – transducer shape/element arrangement

no – fixed focus

“blunted” sector

Electronic

Phased linear array

sequencing

yes – phasing

rectangle

Electronic

Phased curved array

sequencing

yes – transducer shape/element arrangement

yes – phasing

“blunted” sector

Electronic

Vector

sequencing

yes – phasing

“flat top” sector

Electronic

Linear phased array

phasing

yes – phasing

“pointed” sector

Electronic

Annular array

phasing

yes – mechanically

yes – phasing

“notch” sector

Electronic (with a mechanical reflector for steering)

Oscillating Element

mechanical means

yes – element movement

no – fixed focus

notch sector

Mechanical

Rotating group of elements

mechanical means

yes – element movement

no – fixed focus

notch sector

Mechanical

Oscillating reflector

mechanical means

yes – reflector movement

no – fixed focus

notch sector

Mechanical

Linearly translating element

mechanical means

no – fixed focus

rectangle

Mechanical