Axial And Lateral Flashcards
What is the minimum distance that two structures positioned front to back can be apart and still produce 2 distinct echoes on us
Axial resolution
Axial resolution is determined by
SPL
Axial resolution synonyms
Longitudinal, range, radial, depth resolution
What is the minimum distance that 2 structures positioned side by side can be apart and still produce 2 distinct echoes on us
Lateral resolution
Lateral resolution is determined by the ___ of the sound beam
width
Lateral resolution synonyms
angular, transverse, and azimuthal (LATA)
T/F narrower beams have better lateral resolution
TRUE
In far field, lateral resolution is best with ___ diameter and ___ frequency
largest and highest
Axial resolution is determined by
Pulse duration or SPL
Lower or higher numerical value is best for axial resolution
Lower
Axial resolution formula
SPL/2
Best axial resolution characteristics with cycles and frequency
Low cycles, high frequency
What is considered internal focusing
curved crystal
What is considered external focusing
lens
What technique is consistent with variable and multifocusing
electronic