Window level presets for MR data: ReferenceTopic number: 1501600348239

Two types of window level presets are available within static presets: linear and filtered. A linear preset is defined by center and width values and a filtered preset is defined by a combination of an available linear preset. Dynamic presets define the brightness and contrast of an image based on the data of a specific image.

Window level presets are defined by the following criteria:

The following static presets are defined by default for MR image series:

The following dynamic presets are defined by default for MR image series:

Dynamic window level presets use one of the following computational methods to calculate the window level based on the data contained within a series image:

• Standard—Sets the window level to a linear slope over the full data range within the DICOM object.
• Histogram—Sets the window level by calculating the mean value and the standard deviation within a logical space in relation to the image. The window is defined by minus and plus 5 times the standard deviation and is centered around the mean value to define the window width and window center.
• MinMax—Sets the window level to a linear slope from the minimum logical value of the image to the maximum logical value of the image.
• StdDev—Sets the window level to a linear slope from the mean value minus one standard deviations to the mean value plus one standard deviation.
• MiddleImageHeader—Sets the window level of each image in a stack of images to the window center and window width, as defined in the DICOM header of the middle image of the stack. For multi 3D data, the middle image of the first time stamp is used. If there is no center/width defined in the header, this window level preset is not applicable.