0
edits
The principle of ultrasound: Difference between revisions
Jump to navigation
Jump to search
no edit summary
No edit summary |
No edit summary |
||
| Line 81: | Line 81: | ||
If the incidence is not 90 degree, then specular reflectors are not well seen. Another instance when specular reflection is produced is when the wavelength is much smaller than the irregularities of the media/media boundary. Diffuse or Backscatter reflections are produced when the ultrasound returning toward the transducer is disorganized. This occurs when the ultrasound wavelength is similar size to the irregularities of the media/media boundary. When the ultrasound wavelength is larger than the irregularities of the boundary, the ultrasound is chaotically redirected in all directions or scatters. | If the incidence is not 90 degree, then specular reflectors are not well seen. Another instance when specular reflection is produced is when the wavelength is much smaller than the irregularities of the media/media boundary. Diffuse or Backscatter reflections are produced when the ultrasound returning toward the transducer is disorganized. This occurs when the ultrasound wavelength is similar size to the irregularities of the media/media boundary. When the ultrasound wavelength is larger than the irregularities of the boundary, the ultrasound is chaotically redirected in all directions or scatters. | ||
[[File:PhysicsUltrasound_Fig15.svg|thumb|left| | [[File:PhysicsUltrasound_Fig15.svg|thumb|left|200px| Fig. 15]] | ||
{{clr}} | {{clr}} | ||