A Novel Technique for the Semi-Automated Measurement of Embryo Volume: An Intraobserver Reliability Study

Assessment of Elastase‐Induced Murine Abdominal Aortic Aneurysms: Comparison of Ultrasound Imaging with In Situ Video Microscopy

“…The ICC is the proportion of the total variance caused by the variation between subjects such that, in this study, an ICC of 1 denotes that the total variance is purely a result of the variation between aortas, whereas an ICC of 0 suggests that the total variance is entirely related to the variation between observations or caused by measurement error. In general, an ICC >0.75 is considered a ‘‘good level of agreement” between serial measurements or single measures by different observers [16]. Intraobserver variability was also analyzed with ICC for absolute agreement.…”

A review of fetal volumetry: the need for standardization and definitions in measurement methodology

“…In the majority of cases this is accomplished by manual organ segmentation, using one of two methods: the multiple parallel plane method (multiplanar) or the rotational Virtual Organ Computer‐aided AnaLysis ((VOCAL); GE Medical Systems, Zipf, Austria). Newer volumetric tools include a semi‐automated virtual reality system, I‐Space VR (Barco, Kortrijk, Belgium)5, and an automated segmentation tool for fluid‐filled spaces, Sono‐AVC (GE Medical Systems)6. For certain organs, the volume of interest can be traced directly or calculated by subtraction from a larger anatomical compartment.…”

“…For certain organs, the volume of interest can be traced directly or calculated by subtraction from a larger anatomical compartment. For instance, lung volume can be calculated either by tracing both lung fields directly7 or by subtracting the heart volume from the chest volume8; similarly, first‐trimester embryo volumes can be measured directly9 or by subtracting the amniotic fluid and yolk sac volumes from the gestational cavity volume6.…”

Embryo volume measurement: an intraobserver, intermethod comparative study of semiautomated and manual three‐dimensional ultrasound techniques

“…In an attempt to address these issues we have developed a novel ‘semiautomated technique’ to measure embryo volume8. In this technique, the relatively regular structures of the gestational sac (GS) and yolk sac (YS) are measured using VOCAL, and the GS fluid volume (FV) is then measured using sonography‐based Automated Volume Count (SonoAVC (GE Medical Systems)).…”