What is the difference between a radiograph and a film?

In photography, reflected light rays from the object expose the film to produce an image. In radiography, X-rays that pass through the object expose the film to produce an image.

What are the two different types of film in radiography?

The two primary types of radiographic film are direct exposure film and screen film. Direct exposure film provides a sharp image of thin body parts having high subject contrast.

What is radiography used for?

Description. It is used to diagnose or treat patients by recording images of the internal structure of the body to assess the presence or absence of disease, foreign objects, and structural damage or anomaly. During a radiographic procedure, an x-ray beam is passed through the body.

What is the difference between digital and film radiography?

Digital X-rays are like the digital cameras we have today. They still use X-rays as the standard X-rays; the only difference is that their sensors are connected to a computer and not a film. This enables the modern X-ray to capture clearer and more accurate images as compared to its predecessor.

What is computed radiography?

Computed Radiography (CR) is a digital imaging and diagnosis technology that uses a special fluorescence plate called “photostimulable phosphor” instead of the conventional X-ray films to process X-ray images in a short time with high sensitivity.

What is periapical film?

A periapical x-ray or “PA film” will show one or two teeth in their entirety in one single image, right from the crown of the tooth which is the part exposed in the mouth to the very tips of the tooth roots located in the jawbone, as well as the surrounding bone supporting this tooth.

What are the types of radiography?

Medical radiography includes a range of modalities producing many different types of image, each of which has a different clinical application.

• Projectional radiography.
• Computed tomography.
• Dual energy X-ray absorptiometry.
• Fluoroscopy.
• Contrast radiography.
• Other medical imaging.
• Shielding.
• Campaigns.

What is the study of radiography?

In simple terms, radiography may be described as the science of taking images of the internal and hidden portions of the human body for the purpose of diagnosing diseases and ailments. This includes the use of ultrasound, X-ray, CT scan, MRI, etc.

What is a radiograph vs xray?

The difference between the two comes down to definitions of the two words. An x ray is a photon of energy. This is what is exposing the patient for the final image. A radiograph is the resultant image after a patient or object is exposed to x rays.

What is the principal difference between screen film radiography and CR?

What is the principal difference between screen-film radiography and CR? has longer wavelength than the emitted light. You just studied 37 terms!

What is CR and CT?

Both DR and CR modalities produce a 2D image of the object. In contrast, CT systems produce a 3D image that is created by taking multiple image ‘slices’ (usually many thousands) at different angles around a single axis of object rotation.

What is CR and DR radiography?

Digital Radiography (DR) is the latest advancement in Radiography. Computed Radiology (CR) is the digital replacement of X-ray film radiography. CR radiography uses phosphor image plates to create a digital image. Although it is an older technology, it is still digital technology and is more cost effective.

What are the different types of radiographic film?

Types of Screens Double-sided radiographic film: emulsion layer of light-sensitive crystals coated onto both sides of a transparent base material. Single-sided camera film: one emulsion layer only. Non-screen film: x-ray photons used directly to expose film.

What is medical radiography?

Medical radiography is a broad term that covers several types of studies that require the visualization of the internal parts of the body using x-ray techniques. For the purposes of this page radiography means a technique for generating and recording an x-ray pattern for the purpose of providing the user with a static image (s)

What is the composition of X ray film?

X-ray film. X-ray film displays the radiographic image and consists of emulsion (single or double) of silver halide (silver bromide (AgBr) is most common) which when exposed to light, produces a silver ion (Ag +) and an electron.

What happens during a radiographic procedure?

During a radiographic procedure, an x-ray beam is passed through the body. A portion of the x-rays are absorbed or scattered by the internal structure and the remaining x-ray pattern is transmitted to a detector so that an image may be recorded for later evaluation. The recoding of the pattern may occur on film or through electronic means.