Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9872690 | International Journal of Radiation Oncology*Biology*Physics | 2005 | 7 Pages |
Abstract
Overall in this study, the best m-rep kidney segmentations were at least as good as careful manual slice-by-slice segmentations performed by two experienced humans, and the worst performance was no worse than typical segmentations from our clinical setting. The mean surface separations for human-m-rep segmentations were slightly larger than for human-human segmentations but still in the subvoxel range, and volume overlap and maximum surface separation were slightly better for human-human comparisons. These results were expected because of experimental factors that favored comparison of the human-human segmentations. In particular, m-rep agreement with humans appears to have been limited largely by fundamental differences between manual slice-by-slice and true three-dimensional segmentation, imaging artifacts, image voxel dimensions, and the use of an m-rep model that produced a smooth surface across the renal pelvis.
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Authors
Manjori M.S., Joshua B.S., Yueh-Yun M.S., Keith Ph.D., Gregg B.S., Stephen M. Ph.D., Edward L. Ph.D.,