AGFA HE/001132 Manuel D’Utilisation

HE/001132

Page 18 of 92

Document No. 001132, Revision 2.0

Agfa HealthCare

NodeID Livelink : 14140190

14 June, 2007

2.2.1.3.1.3.1.6

Grayscale Softcopy Presentation State Storage SOP Class

(1.2.840.10008.5.1.4.1.1.11.1)

The Grayscale Softcopy Presentation State Storage SOP Class extends the functionality of the Storage
Service class to add the ability to convey an intended presentation state or record an existing presentation
state.
It includes capabilities for specifying:

the output grayscale space in P-Values

grayscale contrast transformations including modality and VOI LUT

selection of the area of the image to display

image and display relative annotations, including graphics, text and overlays

Note:

A GSPS always refers to exactly one (1) image. Since re-sending an image is prohibited in
"Workstation", an archived image can also have maximally one (1) GSPS that refers to it.

Depending on the configured SOP class to be used (CR (§

2.2.1.3.1.3.1

), DX for presentation (§

2.2.1..3.2

) or

MG for presentation (§ 2.2.1.3.1.3.4) annotations and shutters are stored in the GSPS or burned in the
image as described in the following table:

Table 2.2-9: Use of GSPS vs. Burning in the image

DX for presentation

MG for presentation

DX for processing

Image

(processing,W/L,collimation)

Processed pixels
+
LUTs

RAW pixels

Annotations

GSPS or Burned in

Shutters

GSPS or
when GSPS is not used:
In case of CR the shutter is
burned into the Pixel data.
In case of DX and MG the
shutter is described in the
shutter module of the image
header.

Zoom

GSPS or discarded

Markers

Always burned in

Ignored

The following paragraphs describe into detail how each annotation is embedded in the GSPS

2.2.1.3.1.3.1.6.1

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