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13 Questions

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RADIOLOGY LECTURE 5 ~~~~~ ANKI

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Questions and Answers

What is the most significant advantage of digital imaging regarding exposure correction?

Instant availability of images for immediate interpretation

Inherent resistance to overexposure and underexposure

Post-processing adjustments for brightness and contrast (correct)

Ability to retake images without any cost implications

How does the spatial resolution of solid-state receptors compare to film and phosphor plates?

Solid-state receptors achieve better resolution than both film and phosphor plates

Solid-state receptors have the highest resolution at 25 lp/mm (correct)

Solid-state receptors have lower resolution than film

Solid-state receptors do not have a measurable resolution

What occurs during overexposure in X-ray imaging?

The image appears too light for satisfactory interpretation

The image retains all original details without modification

The image shows undesired pixelation

The image appears too dark, obscuring details (correct)

What is the total number of grayscale values available in digital imaging?

242 grayscale values Signup and view all the answers

What measurand is used to assess spatial resolution in film-based imaging?

Line pairs per millimeter (lp/mm) Signup and view all the answers

What substance is used in the phosphor plate to produce fluorescence when exposed to X-rays?

Scintillator Signup and view all the answers

Which characteristic is associated with solid-state receptors in digital imaging?

Produces real-time digital images Signup and view all the answers

What is the approximate sensor pixel size for solid-state receptors?

20 micrometers Signup and view all the answers

How does a phosphor plate receptor function after X-ray exposure?

Requires a developing process before imaging Signup and view all the answers

Which digital imaging method offers the lowest radiation dose?

Solid-state receptors Signup and view all the answers

What is a disadvantage of phosphor plate receptors?

Requires development process after exposure Signup and view all the answers

What is the approximate image line pairs per millimeter for solid-state receptors?

25 lp/mm Signup and view all the answers

Which system is a popular phosphor plate used in the UK?

Soredex Signup and view all the answers