12 Questions
Which anatomical slice orientation is defined as feet to head?
Axial
What is the main difference between high contrast and low contrast in radiographs?
Low contrast has a narrower range of densities.
Which term refers to a slice orientation that is from left to right or right to left in anatomy?
Sagittal
What does resolution in imaging refer to?
The ability to differentiate between two adjacent structures
Why does a higher atomic number lead to more attenuation in radiographic imaging?
Higher atomic number means more electrons available to interact with X-rays, causing increased attenuation.
Why is it challenging to distinguish tissues with similar densities and thickness when subject contrast is low?
Low subject contrast causes tissues with similar densities to absorb X-rays equally, reducing their differentiation.
In radiographic imaging, which tissue would allow the least amount of X-ray penetration due to its density?
Bone (1.85 gm/cc)
Why might it be necessary to administer a contrast agent when viewing tissues with low subject contrast?
To highlight differences between tissues with similar densities.
What is the primary difference between high contrast and low contrast in imaging?
High contrast has fewer shades of grey, while low contrast has more shades of grey.
How does the density or atomic mass of tissues affect contrast in imaging?
Higher tissue density leads to low contrast, while lower density results in high contrast.
What does visual acuity measure in relation to anatomical viewing?
The eye's capability to distinguish shapes and object details at a specific distance.
How does resolution impact the quality of images produced by devices?
Higher resolution results in clearer images with more detail.
Explore the concepts of high and low contrast in images, and understand how good contrast can enhance visibility. Learn about resolution as a measure of image sharpness and visual acuity. Definitions compiled and rephrased from various sources, including scientific journal articles.
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