Physics CH 10 powerpoint & notes

The ability to see the details of a subject is:

• focal depth

• resolution

• resonance

• focus

Resolution along the beam axis is:

• axial resolution

• lateral resolution

• elevation resolution

Determined by the SPL:

• axial resolution

• lateral resolution

• elevation resolution

How close reflectors can be to each other and still be seen separately:

• axial resolution

• lateral resolution

• elevation resolution

The ____ the SPL, the ____ the axial resolution!

• longer

  better

• longer

  shorter

• shorter

  better

• shorter

  worse

Which of the following will not improve the axial resolution?

• less ringing or fewer cycles in a pulse

• higher frequency sound with a shorter wavelength

• decrease damping and lower the frequency

• as frequency increases, the numerical value decreases and higher quality images result

The sonographer can adjust the axial resolution

• true

• false

The SPL can be made shorter by:

• increase damping & use a higher frequency

• decrease damping & use a higher frequency

• increase damping & use a lower frequency

• decrease damping & use a lower frequency

How close reflectors can be lateral to the beam axis and still be seen separately is:

• axial resolution

• lateral resolution

• elevation resolution

Determined by the beam diameter:

• axial resolution

• lateral resolution

• elevation resolution