Estimation of the Craniectomy Surface Area by Using Postoperative Images

Figure 2

Illustration of the surface area estimation methods. (a) The marching cube method entails estimating the surface area by splitting the surface into small polygons (triangles in our implementation). The quasi-Monte Carlo method involves estimating the surface area by counting the number of intersections between the skull flap and lines generated using a low-discrepancy sequence. (b) AC method. is the longest length of craniectomy on the axial slices, and C is the product of the number of axial cuts induced by craniectomy and slice thickness/spacing.

(a)

(b)