A threshold of 55mm was determined as the perineum to fetal head distance above which a diagnosis of engagement would be reversed. This proposed threshold had a positive predictive value of 98.6%, a sensitivity of 86.7%, and a specificity of 94.1%. Transperineal ultrasound is a simple, rapid,...
These ultrasound images show a normal early fetus of 9 weeks gestational age (1st trimester) and are taken via the transabdominal route. Among the structures seen are the fetus with the bulkier head (cephalic part) and the fetal heart on Color Doppler and Power Doppler imaging. Spectral Doppler...
Introduction. Recent evidence indicates that clinical examination, for determination of fetal head position, is subjective and inaccurate. Present study was aimed to compare transabdominal ultrasound for fetal head position with vaginal examination durin
Objective: The objective of this study was to investigate the feasibility of examining the fetal heart with Tomographic Ultrasound Imaging (TUI) using four-dimensional (4D) volume datasets acquired with spatiotemporal image correlation (STIC). Material and methods: One hundred and ninety-five fetuses...
In the second and third trimesters, we evaluated the fetal head and spine in 5 planes: the trans-ventricular plane, the trans-cerebellar plane, the trans-thalamic plane, the longitudinal plane of the spine and the mid-sagittal or median plane for assessing all major midline organs and their...
An anatomy ultrasound is recommended around your 20th week of pregnancy to look at fetal development and growth. During the 20-week ultrasound, the medical technician does a thorough exam of your fetus's anatomy — counting and inspecting limbs; measuring head and bone size; and looking at faci...
Anomalies of the Fetal Head, Neck and Spine: Ultrasound Diagnosis and Management Toi,Ants - 《Radiology》 被引量: 0发表: 1989年 Three-dimensional ultrasound in the evaluation of fetal head and spine anomalies Mueller GM,Weiner CP,Yankowitz J.Three-dimensionalultrasound in the evaluation of fetal...
A Retrospective Fetal Ultrasound Study of Brain Size in Autism Despite evidence of possible abnormalities during fetal development, no study to date has attempted to investigate fetal brain growth in autism. Fetal head... K Hobbs,A Kennedy,M Dubray,... - 《Biological Psychiatry》 被引量: 132...
Three-dimensional ultrasound in the evaluation of fetal head and spine anomalies Our experience with 3-D ultrasound suggests that it is an advance in high-quality ultrasound. Its greatest advantage is that it allows the user to view sim... GM Mueller,CP Weiner,J Yankowitz - 《Obstetrics & ...
Objective To create reliable reference ranges and calculate Z scores for fetal head ultrasound biometry using a large sample size which is evenly distributed from 12 to 42 weeks of pregnancy. Design A prospective, cross-sectional study. Setting Obstetric clinics (outpatient and delivery units) at th...