Tumor Height, Shape and Apex Location |
Plaque Simulator follows the COMS convention of describing tumor height as the distance between the tumor apex and the inner sclera directly below the apex. Plaque Simulator models the sclera as being 1 mm thick, so the apex of a 5.6 mm tall tumor would be 6.6 mm from the exterior sclera, and also 6.6 mm from the concave face of the plaque assuming the plaque is in contact with the exterior sclera. After digitizing the tumor base in the Retinal Diagram window, enter the tumor height and then choose the shape of the mound and the location of the apex. |
Ultrasound is the most reliable method of measuring the tumor height and the shape of the dome.
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CT and MR can sometimes be used to measure the tumor height for medium and large tumors if the slice spacing is small and the images are not grainy.
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