Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

10 Questions

6 Views

X-Ray Grids and Collimators Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Who invented the radiographic grid?

Dr. Alexander Scattering in 1905

Dr. William X-ray in 1920

Dr. Gustave Bucky in 1913 (correct)

Dr. Emily Radiography in 1915

What is the purpose of a radiographic grid?

To scatter radiation in multiple directions

To remove scattered radiation and increase image contrast (correct)

To create a background fog in the film image

To absorb primary radiation and decrease image contrast

Why are patient exposures higher with aluminum interspace grids?

Because aluminum absorbs more primary radiation (correct)

Because aluminum decreases image noise

Because aluminum scatters more radiation

Because aluminum increases image contrast

What material are the interspaces of the grid typically made of?

Aluminum or other organic compounds Signup and view all the answers

What does scatter radiation contribute to the film image?

A constant background fog and increased noise Signup and view all the answers

What are the two ways of obtaining a digital x-ray?

<ol> <li>Computed radiography 2. Direct/indirect digital radiography</li> </ol> Signup and view all the answers

What is the process of computed radiography?

Capturing radiographic data from a conventional x-ray machine and processing the data digitally to produce a crisp and high-quality image Signup and view all the answers

What is the imaging plate made of in computed radiography?

A screen using a photostimulabe phosphor Signup and view all the answers

What is the special property of photostimulable phosphor in computed radiography?

Storing X-ray energy in the latent form and releasing the same when stimulated by a laser energy in the CR reader/digitizer Signup and view all the answers

What is unique about storage phosphor in computed radiography?

They respond to a wide range of X-ray exposures regardless of the exposure, and the image can be displayed correctly Signup and view all the answers

Study Notes

Radiographic Grid

Invented by Dr. Gustave Bucky
Purpose: to absorb scattered radiation and improve image contrast and resolution

Radiographic Grid Characteristics

Patient exposures are higher with aluminum interspace grids due to increased absorption of radiation

Grid Interspaces

Typically made of aluminum or fiber materials

Scatter Radiation

Contributes to image degradation and loss of contrast on the film image

Digital X-ray

Two ways to obtain:
- Computed radiography (CR)
- Digital radiography (DR)

Computed Radiography (CR)

Process: x-ray exposed imaging plate is scanned by a laser, and the stored latent image is read out

Imaging Plate

Made of photostimulable phosphor (PSP)
Storage phosphor has the unique property of being able to store a latent image until stimulated by a laser

Photostimulable Phosphor (PSP)

Special property: emits light when stimulated by a laser, which is then measured to form a digital image

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge about X-ray grids and collimators with this quiz. Learn about how grids are used to remove scattered radiation and increase image contrast in X-ray imaging.