Lecture 2 Intro to Imaging, Intro to Ultrasound Flashcards by Adam Garza | Brainscape

Q

What type of methods are theses two types of images?
2. What types of images are they?

A

TRANSMISSION
XR and CT

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Q

What method was used for this image?
What type of image is it?

A

EMISSION
MRI

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Q

What method was used for this
What type of images is this?

*Bonus what is the purpose of the Green Dot

A

Reflective
US

The marker, usually to the right to the skull

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Q

Beams of high-energy photons are transmitted through the body structure

Contrasts often used to improve imaging of hollow spaces (gut, vessels)

A

Transmission type (X-ray, CT)

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Q

Equipment detects radiofrequency energy of hydrogen protons in a strong magnetic field

A

Magnetic resonance imaging (MRI

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Q

Units of measure for CT Scan

A

Hounsfield Scale

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Q

What is the standard orientation for axial CT

A

Supine viewed from the inferior

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Q

Modality
View
Label

A

CT(Tranmission)
Axial
Know the labels

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Q

Modality
View
Label

A

CT(Transmission)
Coronal
Know the labels

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Q

What view is this?

A

Sagittal

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Q

Angiogram

A

Imaging of vasculature – can be achieved with transmission and emission techniques
Provides views on internal space of vessels Arteriogram = arteries
Venogram = veins
Modalities
* X-ray – standard angiogram
* CT angiogram – can be manipulated for 3D image
* MRA – MRI generated image

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Q

Hyperechoic

A

bright white; dense/stiff objects e.g., bone, dense connective tissue, fat

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Q

Isoechoic

A

medium grey; average density/stiffness e.g., liver, spleen

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Q

Hypoechoic

A

dark grey; low density/stiffness e.g., nerves, skeletal muscle, kidney cortex

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Q

Anechoic

A

black; fluid filled structures, “shadows” e.g., vessels, cysts, bladder

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Q

Linear array probe

A

Q

Curved (curvilinear) array probe

A

Q

Phased array probe

A

Q

What type of movement is this?

A

Q

What type of movement is this?

A

Q

What type of movement is this?

A

Q

What type of movement is this?

A

Q

What type of movement is this?

A

Q

A

Q

Describe this

A

Acoustic shadow→anechoic area deep to a mineralized structure

Q

Describe this

A

Deep acoustic enhancement→ tissues deep to a fluid filled space appear brighter

Q

Describe this

A

Dirty shadows→Obstruction of deeper structure due to bowel gas