The PACS viewer uses some graphics to inform the user of some condition that may be medically relevant about the image in the image frame.
When compression is used to download images from the PACS server to the viewer, the image may contain bit errors that result in modified pixel values. This is common when employing compression ratios that are not bit conserving. To inform the user when an image was downloaded using a lossy compression ratio, a warning icon appears in the upper left corner of the image frame.
To eliminate this warning:
-
Select Uncompressed in the Settings panel under Images/Compression
-
Set the Wavelet Quality setting to Lossless
To request the remaining data for a compressed image without changing your settings, double click on the lossy compression warning icon in the image frame. The viewer downloads the rest of the wavelet data from the server, resulting in lossless compressed image.
Image Not Intended For Diagnostic Interpretation
A Not Intended For Diagnostic Interpretation Indicator displays for any image not intended for diagnostic interpretation. Different DICOM objects are used for conveying unprocessed data and processed data. The warning appears if the image belongs to one of these object classes. For example, this warning can be seen when opening an unprocessed mammography image.