Fetal Biometric Measurements During the First Trimester of Pregnancy

被引:0
作者
Bracamontes Pina, Maria Georgina [1 ]
Bojorges-Valdez, Erik [2 ]
Camargo Marin, Lisbeth [3 ]
Guzman Huerta, Mario [3 ]
Sanchez Rivera, Moises [2 ]
Medina Banuelos, Veronica [2 ]
机构
[1] Univ Iberoamer, AC, Mexico City, DF, Mexico
[2] Univ Autonoma Metropolitana Iztapalapa, Mexico City, DF, Mexico
[3] Inst Nacl Perinatol, Mexico City, DF, Mexico
来源
12TH INTERNATIONAL SYMPOSIUM ON MEDICAL INFORMATION PROCESSING AND ANALYSIS | 2017年 / 10160卷
关键词
Active contour model; gestational sac volume; Otsu; ultrasound; VOCAL;
D O I
10.1117/12.2256899
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
During the first trimester of pregnancy fetal health assessment is especially important. In the clinical practice, the gestational sac (GS) volume estimation is manually done using a tedious procedure which is prone to physicians' subjectivity. The method proposed in this paper consists on a semiautomatic delimitation of the GS and a segmentation of its content with minimal expert intervention. It is based on spreading active contours (SAC), following a planimetric strategy to define the GS' edges. Additionally, an optimal thresholding method was used to separate solid matter and amniotic fluid. The comparison between manual GS segmentations and those obtained with the proposed SAC method, shows Dice similarities of 90% and a mean Hausdorff distance of 5.63 +/- 1.94 mm, while the correlation index between SAC and the clinical reference (VOCAL) is 0.997. However, with statistical tests (t-paired) a value of p < 0.05 was obtained, which suggests a difference in the measured volume by the compared methods. The proposed method (SAC) has shown to be reliable, besides of being easy to implement.
引用
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页数:6
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