2D Dosimetry Surfaces

The 2D Dosimetry Surface dialog enables you to change which surface (meridian plane, coronal plane, or spherical) is assigned to the currently selected dose matrix in the Dosimetry Window.

Note: there is usually no need to modify the dosimetry surfaces from their defaults as one of each type is created when the program launches. Dose matrix #1 defaults to a meridian plane through the plaque center, and dose matrix #2 defaults to a coronal plane at the equator. Dose matrix #3 is always the retinal surface in the Retinal Diagram Window.

Meridian plane
DoseSurfaceDialogMeridian

The meridian plane orientation is described by an angle and an offset. The offset can be either 0 or 180 degrees. The offset is used to quickly match the orientation of the dosimetry plane to match the tumor-meridian plane when overlaying CT images.

Coronal plane
DoseSurfaceDialogCoronal

The coronal plane position is expressed as an X coordinate offset from the equator.

Spherical surface
DoseSurfaceDialogSpherical

This option exists in case you need to calculate dose on a spherical surface other than the retina.

Calculate 2D Matrices | Plot Menu | Dosimetry Window | Guide Contents