Ultrasound, CT, MRI, not done use last slide of US lecture to learn basics of the imaging techs

Screening tests should have a high sensitivity/specificity?

Sensitivity

What is the limitation of taking a 3D patient and making them a 2D image?

It creates superimposition

What creates border effacement?

Fluid and soft tissue are the same opacity

What are the limitations of radiographs?

Superimposition, border effacement, safety

What is the benefit of cross sectional imaging?

It removes superimposition

Describe ultrasound

Cross-sectional with limited views, good spatial and contrast resolution

What are the limitations of ultrasound?

Bone, gas

When doing an ultrasound what allows you to have clear image?

Reflection of the soundwaves

What does scattering allow for with ultrasound?

Seeing the texture of the tissue

What does refraction cause with ultrasound?

Artifact

What does echogenic mean?

You are able to see a tissue

What is M-mode?

It is looking at the same piece of tissue over time. Useful for looking at a heart beat physically compared to the rhythm

What is nuclear scintgraphy?

Injection of radioactive pharmaceuticals that are targeted to active tissue types

What are the downsides of nuclear scintigraphy?

Not always cross-sectional

Poor spatial resolution

Poor contrast resolution

What type of imaging is nuclear scintigraphy?

Functional imaging

Nuclear scintigraphy is high specificity/sensitivity?

Sensitivity