Anatomical Fiducials

Note

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Placing Fiducials¶

The midline plane will need to be determined, which relies on four points: the anterior commissure (AC), the posterior commissure (PC), and two midline points (Mid 1-2). The midline points should be at least one interhemispheric point and one brainstem point (see section below for landmark positions). These 4 points are then used to define the midline plane, which is used to define the Talaraich coordinate system.

To place a fiducial point, click on the place point button ( MarkupsFiducialMouseModePlace ) and drop the point at the indicated landmark. Once you have placed AC, PC and at least 2 midlines, click Confirm Fiducials. A new entry will be added to the fiducial table for the point MCP.

Warning

If you modify any fiducial points you will need to press Confirm Fiducials again to re-calculate MCP

Anatomical Landmarks¶

AC point¶

!The anterior commissure.

The anterior commissure.

PC point¶

!The posterior commissure.

The posterior commissure.

Midline Points¶

Genu¶

!Genu.

Genu.

Infracollicular Sulcus¶

$!The infracollicular sulcus.$

The infracollicular sulcus.

Superior interpeduncular fossa¶

!The superior interpeduncular fossa.

The superior interpeduncular fossa.