Digital Imaging Flashcards
(25 cards)
uses film and intensifying screen in its image formation process.
Conventional Radiography
is placed on one or between two intensifying screens that emit light when struck by xrays.
Film
The ___ exposes the film in
proportion to the amount and
energy of the xrays incident on
the screen.
light
The ___ is processed with chemicals, and the manifest image appears on the sheet of film, lightbox for interpretation.
Film
is any imaging acquisition process that produces an electronic image that
can be viewed and manipulated on a computer.
Digital Imaging
Most ___ modalities produce digital images that can
be sent through a computer network to various locations.
modern medical imaging
In medicine, one of the first uses of digital imaging was with the introduction of the __
Ct scanner by Godfrey Hounsfield in the 1970s.
is second only to the discovery of the xray, in which it is a major milestone in medicine.
CT
brought about the coupling of the computer and imaging
devices.
CT
The concept of moving images digitally was introduced by ___
during his experimentation of teleradioraphy.
Albert Jutras in Canada
Albert Jutras in Canada was conducting experimentation of ____
teleradioraphy
was developed by the U.S military in an effort to move images among Veterans Administration hospitals and to send battle field images to established hospitals.
Early PACS
transport of image
Teleradiography
These strides were taking place in the early to mid ___ and without the ___ participation, this technology would not be where it is today.
1980s
governments
BENEFITS of PACS
- Reduce Radition Exposure
- Enhance Image Quality
- Easy Image Retrieval and Sharing
- Reduced Storage Space
- Faster Processing and Diagnoses
Digital image processing allows for manipulation of contrast, brightness, and other parameters to enhance the visibility of specific anatomical structures.
Enhanced image quality.
Digital system can optimize exposure factors to achieve good image quality while minimizing radiation dose to patient.
Reduce radiation exposure.
Digital images can be easily stored, retrieved, and shared electronically, eliminating the need for film storage and physical transfer.
Easy image retrieval and sharing.
Digital images can be archived on electronic storage devices, requiring significantly less space compared to physical films.
Reduced storage space.
Digital imaging eliminates the need for wet processing, leading to faster image availability and potentially faster diagnosis.
Faster processing and diagnoses.
Types of Digital Radiography
Computed Radiography CR
Digital Radiography DR
Uses a phosphoresence imaging plate that captures the Xray image, which is then scanned and converted into digital signal.
COMPUTED RADIOGRAPHY
Directly converts Xrays into a digital signal using a flat panel detector or other digital detector array.
DIGITAL RADIOGRAPHY
A key component of digital radiology
PICTURE ARCHIVING AND COMMUNICATION SYSTEM (PACS)
