Imaging Accessories Overview

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of a caliper in radiologic technology?

To convert x-rays into visible light

To measure the thickness of body parts (correct)

To hold the screens and film in place

To expose x-ray film directly

What percentage of the image on an x-ray film is created by the light from intensifying screens?

100%

50%

95% (correct)

How should the jaws of a caliper be positioned when measuring a body part?

They should not touch the body part

One jaw should be longer than the other

They should remain parallel to each other (correct)

They should be angled to each other

What material is used to coat x-ray film?

Gelatin and silver compounds Signup and view all the answers

What does an intensifying screen contain that is essential for creating an x-ray image?

Phosphor crystals Signup and view all the answers

What is the function of a cassette in radiology?

To protect the film from light Signup and view all the answers

Which statement is true regarding the use of a caliper?

It provides accurate technique selection for imaging Signup and view all the answers

Which accessory is primarily responsible for increasing the sensitivity of the x-ray film to radiation?

Intensifying screen Signup and view all the answers

What is the primary purpose of the emulsion layer in an X-ray film?

To act as the recording medium for X-ray exposure Signup and view all the answers

Which of the following layers is responsible for gluing the emulsion to the base of the X-ray film?

Adhesive Layer Signup and view all the answers

What material is primarily used for the film base in modern X-ray films?

Polyester Signup and view all the answers

What was a major disadvantage of using cellulose nitrate as a film base?

It was highly flammable Signup and view all the answers

What thickness range does the emulsion layer of an X-ray film generally fall within?

5 - 10 um Signup and view all the answers

What is the function of the supercoating on an X-ray film?

Prevents glare while viewing the radiograph Signup and view all the answers

What component of the emulsion plays a critical role in film exposure?

Silver Halide Crystals Signup and view all the answers

What historical material was used for X-ray film bases before polyester became common?

Glass Plate Signup and view all the answers

What characteristic of polyester makes it a better choice over cellulose triacetate for film processing?

Stronger and easier to transport through automatic processors Signup and view all the answers

What is the purpose of adding blue dye to radiographic film?

To enhance contrast and reduce glare Signup and view all the answers

Why is dimensional stability important for the base of radiographic film?

It prevents image distortion during use and processing Signup and view all the answers

What is the main function of film hangers during film processing?

To position and hold the film correctly Signup and view all the answers

Which of the following is a primary use of the Pigg-O-Stat immobilizer?

To hold a child safely in an upright position for imaging Signup and view all the answers

What type of protective shield is specifically designed to reduce radiation exposure to the thyroid gland?

Thyroid shields Signup and view all the answers

How do lead gloves function in radiographic procedures?

To protect radiographers' hands from the x-ray beam Signup and view all the answers

What is the main feature of a negatoscope or view box?

To illuminate radiographic images for better visualization Signup and view all the answers

What is the primary function of lead goggles or eyeglasses in diagnostic imaging?

To protect the eyes from scatter radiation Signup and view all the answers

Which type of protective shield is specifically designed to protect the male gonads?

Shaped contact shields Signup and view all the answers

When is gonadal shielding typically used during diagnostic X-ray procedures?

Unless it compromises diagnostic value Signup and view all the answers

What characteristic distinguishes shadow shields from other types of gonadal shields?

They are adjustable and mounted to the tube Signup and view all the answers

What is the most effective use for flat contact shields?

For anteroposterior (AP) or posteroanterior (PA) radiographs in recumbent positions Signup and view all the answers

What type of gonadal shield is made from lead-impregnated vinyl and varies in size?

Flat contact shields Signup and view all the answers

Which of the following statements about clear lead shields is true?

They are replacing older gonadal and breast shielding devices. Signup and view all the answers

What is the main purpose of gonadal shielding during X-ray procedures?

To minimize radiation exposure to reproductive organs Signup and view all the answers

Study Notes

Measuring Tools in Radiologic Technology

Caliper: Used to precisely measure body parts for accurate positioning and radiation exposure.
Caliper jaw positioning: Parallel to the body part being measured.

X-ray Film Composition and Function

Intensifying screens: Contribute approximately 95% to the image on an x-ray film, with the remaining 5% from direct radiation exposure.
Film base: The rigid support for the film emulsion, typically made of polyester in modern films.
Emulsion: The layer that contains silver halide crystals, responsible for capturing x-rays and converting them into a visible image.
Supercoating: Protects the emulsion from scratches and other damage during handling.
Blue dye: Added to the film base to absorb unwanted light wavelengths and improve image contrast.

Film Processing and Features

Film hangers: Used in the automatic processor to hold and transport the film during development and washing.
Dimensional Stability: The film base needs to maintain its size and shape throughout processing to avoid image distortion.

Radiation Protection in Radiologic Technology

Lead gloves: Worn by radiographers to shield their hands from scattered radiation during procedures.
Lead goggles or eyeglasses: Protect the eyes from scattered radiation.
Thyroid shield: Specifically designed to protect the thyroid gland from radiation.
Gonadal shielding: Used to safeguard the reproductive organs (ovaries and testes) from radiation exposure.
Flat contact shields: Best used for positioning over the gonads in a direct, flat contact position.
Shadow shields: These shields cast a shadow over the gonads, providing a localized protective barrier.
Clear lead shields: Useful for protecting the gonads while allowing anatomical landmarks to be seen during procedures.
Pigg-O-Stat immobilizer: A specific type of immobilizer that helps to stabilize children or infants during radiographic procedures.

Purpose of Gonadal Shielding

Primary Purpose: Reduce the risk of radiation-induced infertility and genetic damage.
Use: Used during diagnostic X-ray procedures when the reproductive organs are within the radiation field.

Studying That Suits You

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

Description

Explore essential imaging accessories like calipers, intensifying screens, cassettes, and X-ray film through this quiz. Understand how each tool functions and their role in ensuring accurate imaging techniques. Test your knowledge on measurement and image quality in radiography.