Table of Contents
Advertisement
Function
Look
Changes the processing look.
Looks are the way an image is processed to be viewed by a radiologist for
interpretation.
Looks are pre-defined combinations of brightness, contrast, edge enhancement,
and tissue equalization.
Factory Look descriptions:
• Factory Look 1 – similar to analog film, low edge, no TE
• Factory Look 2 – low CR look, low edge, moderate tissue contrast
• Factory Look 3 – moderate CR look, low edge, TE
• Factory Look 4 – highly digital look, high edge, high TE
• Custom looks – The system allows you to build up to 5 custom looks in any
[REPROCESS]
Applies the changes and re-processes the image.
Re-processing creates a new image in the series.
NOTE: The button does not become enabled until the Look is selected.
[EDIT PROC]
Brings up a screen that allows you to view the Factory look settings or create
custom looks.
Refer to
information about building custom looks.
Determine if Images should be Retaken (DEI)
The Detector Exposure Index (DEI) provides a visual indicator to the user for the amount of exposure
received by the detector for a given image. It is designed as a tool for the user to be able to obtain a
properly exposed image by altering acquisition parameters in the event of a retake. DEI estimates the
dose that has reached the detector and compares it to the expected dose for the anatomy to indicate if
the image is under- or over-exposed.
With film cassettes, exposure is directly related to the resulting image; films that are under-exposed or
over-exposed will be either too light or too dark. With the DR Detector, dynamic range detection
algorithms compensate for exposure errors to create images with acceptable brightness and contrast.
Because there is no visible relationship between the actual exposure and the image quality, DEI is used to
identify and track under- and over-exposure.
The DEI acceptable range varies by anatomy. For example, a chest PA exposure may result in a DEI of 0.6
while a hand exposure may result in a DEI value of 1.0.
The display of the Detector Exposure Index and the DEI ranges are configured from the Image Viewer
preferences screen. Refer to
more information.
Definium 5000 X-Ray System
Operator Manual
combination of parameters. Refer to
Processing
(p. 10-32) for more information on building custom looks.
Chapter 10: Set Preferences-Image Processing
Chapter 10: Set Preferences-DEI (Detector Exposure Index)
5197809-1EN
© 2008 General Electric Company. All rights reserved.
Description
Chapter 10: Set Preferences-Image
Rev. 4 (13 February 2008)
Chapter 8: Image Viewer
(p. 10-32) for more
(p. 10-29) for
8-18
Advertisement
Table of Contents
