519948
Description
Flashcards by ecmarchese, updated more than 1 year ago
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Created by ecmarchese
over 10 years ago
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| Question | Answer |
| divides the body into right and left portions, aka longitudunal | Sagittal |
| What is the image orientation of the sagittal scan plane? | superior, anterior, inferior, posterior |
| Divides the body into superior and inferior portions | Transverse |
| What is the image orientation of the transverse scan plane? | right, anterior, left, posterior |
| Divides the body into anterior and posterior portions. | Coronal |
| Describes an organ or tissue that is capable of producing echoes used to describe tissue texture, describes brightness | Echogenic |
| Portion of the image that is echo free, also used as echolucent or sonolucent | anechoic |
| This is a portion of image echoes brighter than surrounding tissue brighter than normal for specific tissue or organs | hyperechoic |
| Why do hyperechoic images occur? | increases amount of sound scattering relative to surrounding tissue |
| portion of image echoes not as bright as surrounding tissue or less bright than usual for a specific organ tissue | hypoechoic |
| Why do you get hypoechoic images? | reduced sound scatter relative surrounding tissue |
| structure of equal echo density | isoechogenic |
| image of echoes of equal density | homogenous |
| several echo characteristics (kidneys) | heterogenous |
| What three definitions are used to describe internal echo patterns? | cystic, solid, complex |
| What are the 3 requirements of a to call something cystic? | 1- anechoic 2- well defined walls, including posterior wall 3- increased amplitude at far wall "brighter on other side of cyst" |
| What are the 3 requirements to call something solid? | 1- Contains internal echoes 2- irregular ill defined walls 3- low amplitude echoes shadowing posterior to the mass due to increased attenuation |
| contains both anechoic and echogenic areas echogenicity will vary with the make up of the mass | complex |
| This is the change in frequency of an echo relative to motion between the sound source and the reciever | Doppler Effect |
| This is the actual changed Frequency | Doppler Shift |
| Where is the ideal doppler shift obtained? | Parallel with flow |
| Tons of lines that go together to make up a doppler waveform. Each line makes up a doppler reading | Spectral Analysis |
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