Anatomical Imaging Modalities Flashcards
Describe the process of obtaining a standard radiograph (i.e., X-ray).
Define and describe “radiolucent.”
Radiolucent – Refers to structures that are less dense and permit the x-ray beam to pass through them. Radiolucent structures appear dark or black in the radiographic image.
Define and describe “radiopaque.”
Radiopaque – Refers to structures that are dense and resist the passage of x-rays.
Radiopaque tissues/objects result in a whiter image; less radiopaque objects result in a blacker image.
What are the five radiodensities?
1 - Air/Lung
2 - Fat (layer between soft tissues)
3 - Soft tissue
4 - Bones
5 - Metal
Describe a CT scan.
A CT scan is like a series of X-rays taken very quickly in a circle around you. When combined and looked at together, they provide a detailed, three-dimensional image of your body.
Describe radiodensities.
How do you read a CT scan?
You always read a CT scan from the feet of the patient looking towards their head.
Describe an ultrasound.
An ultrasound is an imaging test that uses sound waves to make pictures of organs, tissues, and other structures inside your body.
What are the densities of ultrasound?
What is magnetic resonance imaging (MRI)?
Magnetic Resonance Imaging (MRI) is a non-invasive imaging technology that uses high-powered magnets to produce three dimensional detailed anatomical images.
How does an MRI look when being read?
