作者
Lennox Hoyte, Wen Ye, Linda Brubaker, Julia R Fielding, Mark E Lockhart, Marta E Heilbrun, Morton B Brown, Simon K Warfield, Pelvic Floor Disorders Network
发表日期
2011/3
期刊
Journal of Magnetic Resonance Imaging
卷号
33
期号
3
页码范围
684-691
出版商
Wiley Subscription Services, Inc., A Wiley Company
简介
Purpose
To describe the inter‐ and intra‐operator reliability of segmentations of female pelvic floor structures.
Materials and Methods
Three segmentation specialists were asked to segment out the female pelvic structures in 20 MR datasets on three separate occasions. The STAPLE algorithm was used to compute inter‐ and intra‐segmenter agreement of each organ in each dataset. STAPLE computed the sensitivity, specificity, and positive predictive values (PPV) for inter‐ and intra‐segmenter repeatability. These parameters were analyzed using intra‐class correlation analysis. Correlation of organ volume to PPV and sensitivity was also computed.
Results
Mean PPV of the segmented organs ranged from 0.82 to 0.99, and sensitivity ranged from 33 to 96%. Intra‐class correlation ranged from 0.07 to 0.98 across segmenters. Pearson correlation of volume to sensitivity were significant across organs, ranging …
学术搜索中的文章
L Hoyte, W Ye, L Brubaker, JR Fielding, ME Lockhart… - Journal of Magnetic Resonance Imaging, 2011