Gestational Sac vs Pseudosac

Quantitative assessment of gestational sac shape: the gestational sac shape score.

OBJECTIVE To develop a quantitative method for characterizing gestational sac shape. METHODS Twenty first-trimester gestational sacs in normal pregnancies were studied with three-dimensional (3D) ultrasonography. The 3D coordinates of surface-point sets were obtained for each sac using 30-, 15- and six-slice sampling. Cubic spline interpolation was used with the 15- and six-slice surface-poin...

HPF vs. SAC - a Case Study

HPF vs. SAC — A Case Study

This paper compares the functional programming language Sac to Hpf with respect to specificational elegance and runtime performance. A well-known benchmark, red-black SOR, serves as a case study. After presenting the Hpf reference implementation alternative Sac implementations are discussed. Eventually, performance figures show the ability to compile highly generic Sac specifications into machi...

Automatic Gestational Age Estimation Based on Crown Rump Length and Gestational Sac

The development of ultrasound technology allows us to see the structure and development of the fetus directly. Crown-Rump Length (CRL) and mean diameter of gestational sac (MSD) can be used to determine the age of the fetus. Both parameters are useful for measuring different aspects of the first trimester of pregnancy. This study proposes a method to obtain those parameter values automatically ...

[Estimation of gestational age by ultrasonic measurements of the gestational sac].

One hundred and eighty gestational sac (GS) measurements by ultrasound echography were performed on 132 healthy pregnant women with an accurate gestational age of between five and twelve weeks. Their prenatal courses were uneventful and they delivered of babies appropriate for dates at term. The GS longest diameter in longitudinal section (LGS), the GS longest diameter making perpendicularity t...