Fig 1.
The stages are as follows: laparoscopic ultrasound images provide the raw image of the uterus; detection of uterus border via an active contour model; outputting the outline of the detected uterus for laparoscopic diagnosis and surgical guidance and analysis (this may be used for detecting lesions on the uterus or determining the abnormality of the uterus).
Fig 2.
Classification of intra-operative laparoscopic ultrasound examination of 42 women subjects.
The gynecological cases included: uterine fibroids (25 cases), congenital uterine malformations (4 cases), ovarian endometriomas (4 cases), pelvic adhesions masses (2 cases), ruptured ectopic pregnancies (2 cases), and small nodules biopsy on pelvic wall (1 case).
Fig 3.
Gynecology ultrasound scans with segmentation of uterus by active contour model.
(a1), (b1), (c1), (d1), (e1) and (f1) in the first column -are original images. (a2), (b2), (c2), (d2), (e2) and (f2) in the second column are images with uterus edge drawn by the doctor. (a3), (b3), (c3), (d3), (e3) and (f3) are images with uterus edge detected by our method. (a) to (d) represents Group A, and (e) to (f) represents Group B of our experiment.
Table 1.
The results of the linear regression and the Bland-Altman analysis.
Table 2.
The results of the Dice index and Jaccard Index.
Fig 4.
The error variation in different values of α and β.
The error is represented by the percentage that the area difference occupies in the image, where the area difference is the difference between areas computed by our method and drawn manually.