DICOM PS3.18 2024d - Web Services
8.3.5.3.4 Orientation (Current)
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PS3.18 > Common Aspects of DICOM Web Services > Query Parameters > Rendering Query Parameters > Query Parameters For Rendered MPR Volume Resources and Rendered 3D Volume Resources > Orientation
8.3.5.3.4 Orientation

The "orientation" parameter specifies the patient's orientation as seen by the camera for the current 3D or MPR Volumetric Presentation View.

The syntax of this parameter is:

%s"orientation =" 1#( %s"a" / %s"p" / %s"r" / %s"l" / %s"h" / %s"f" )

Where

a

The camera is viewing the patient's anterior:

  • Viewpoint Position (0070,1603) is anterior to the patient.

  • Viewpoint LookAt Point (0070,1604) is from the patient's anterior towards the patient's posterior.

  • Viewpoint Up Direction (0070,1605) is towards the patient's superior.

 
p

The camera is viewing the patient's posterior:

  • Viewpoint Position (0070,1603) is posterior to the patient.

  • Viewpoint LookAt Point (0070,1604) is from the patient's posterior towards the patient's anterior.

  • Viewpoint Up Direction (0070,1605) is towards the patient's superior.

 
r

The camera is viewing the patient's right side:

  • Viewpoint Position (0070,1603) is to the patient's right.

  • Viewpoint LookAt Point (0070,1604) is from the patient's right towards the patient's left.

  • Viewpoint Up Direction (0070,1605) is towards the patient's superior.

 
l

The camera is viewing the patient's left side:

  • Viewpoint Position (0070,1603) is to the patient's left.

  • Viewpoint LookAt Point (0070,1604) is from the patient's left towards the patient's right.

  • Viewpoint Up Direction (0070,1605) is towards the patient's superior.

 
h

The camera is viewing the patient's head (i.e., from above):

  • Viewpoint Position (0070,1603) is superior to the patient.

  • Viewpoint LookAt Point (0070,1604) is from the patient's superior towards the patient's inferior.

  • Viewpoint Up Direction (0070,1605) is towards the patient's anterior.

 
f

The camera is viewing the patient's feet (i.e., from below):

  • Viewpoint Position (0070,1603) is inferior to the patient.

  • Viewpoint LookAt Point (0070,1604) is from the patient's inferior towards the patient's superior.

  • Viewpoint Up Direction (0070,1605) is towards the patient's anterior.

Note

These values correspond to the differently capitalized values of the Patient Orientation (0020,0020) and Image Orientation (Patient) (0020,0037). See Section C.7.6.1.1.1 in PS3.3 and Annex A in PS3.17.

If the Target Resource is a Volumetric Rendering Presentation State and any orientation Query Parameters are present, the origin server shall apply the query parameter(s) instead of the geometry attributes in the Multi-Planar Reconstruction Geometry Module, or the Volume Render Geometry Module.

Note

This is intended to allow the user to adjust orientation after viewing the initial orientation defined in the Volumetric Presentation State.

Orientation is used to select the desired standard anatomic position of the rendered volume. For example, "a" specifies the direction of the rendered volume that most closely aligns with the patient's anterior plane. Viewing angles beyond the standard orthogonal anatomic positions are controlled by camera orientation parameters (i.e., "viewpointposition", "viewpointlookat", or "viewpointup").

The origin server shall determine a Viewpoint Position (0070,1603), a Viewpoint LookAt Point (0070,1604) and a Viewpoint Up Direction (0070,1605) based on the value of the "orientation" parameter.

If both the "orientation" parameter and any of the camera orientation parameters are present, the origin server shall return a 400 (Bad Request) and may include an appropriate Status Report.

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DICOM PS3.18 2024d - Web Services