scholarly journals OC08.01: Diagnosis of fetal orofacial clefts in the first trimester: a three-dimensional (3D) ultrasound study

2011 ◽  
Vol 38 (S1) ◽  
pp. 14-14
Author(s):  
P. Martinez-Ten ◽  
B. Adiego ◽  
T. Illescas ◽  
C. Bermejo ◽  
A. E. Wong ◽  
...  
Keyword(s):  
Three Dimensional ◽  
First Trimester ◽  
3D Ultrasound ◽  
Orofacial Clefts ◽  
Ultrasound Study

Three-dimensional ultrasound first trimester fetal volume measurement and its relation to pregnancy outcome

2017 ◽  
Vol 45 (9) ◽  
Author(s):  
Haitham A. Torky ◽  
Asem A. Moussa ◽  
Ali M. Ahmad ◽  
Osama Dief ◽  
Manar A. Eldesoouky ◽  
...  
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Pregnancy Outcome ◽  
Gestational Age ◽  
Preterm Labor ◽  
Three Dimensional ◽  
First Trimester ◽  
3D Ultrasound ◽  
Secondary Outcome ◽  
Crown Rump Length

AbstractAim of work:To determine whether fetal volume (FV) measured by three-dimensional (3D) ultrasound was able to detect fetuses at risk of low birth weight (primary outcome) and/or preterm labor (secondary outcome).Methods:One hundred pregnant women carrying a singleton living pregnancy who were sure of dates, and had a dating scan, with gestational age between 11 weeks and 13 weeks+6 days coming for routine first trimester nuchal translucency (NT) were examined by both two-dimensional (2D) and 3D ultrasound (Vocal System) for crown-rump length (CRL) and FV then followed up regularly every 4 weeks until 28 weeks then biweekly until 36 weeks then weekly until delivery both clinically and by ultrasound biometry.Findings:Eighty-seven cases had a normal outcome, while the remaining 13 cases had either preterm labor (four cases) or low-birth weight (nine cases). FV positively correlated with CRL (P=0.026), gestational age in weeks (P=0.002), neonatal body weight in grams (P=0.018) and neonatal body length at birth (P=0.04). A mean FV of 8.3 mmConclusion:3D assessment of FV in the first trimester provides an accurate method for predicting pregnancy outcome namely low birth weight and neonatal complications, however, it is a better positive predictor than a negative one.

First trimester three-dimensional ultrasonographic diagnosis of diastrophic dysplasia: a case report and review of the literature

2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Ozgur Ozyuncu ◽  
Mert Turgal ◽  
Aslihan Yazicioglu
Keyword(s):  
Genetic Disorder ◽  
Three Dimensional ◽  
Pregnant Patient ◽  
First Trimester ◽  
Nuchal Translucency ◽  
3D Ultrasound ◽  
Review Of The Literature ◽  
Diastrophic Dysplasia ◽  
First Trimester Scan ◽  
Increased Nuchal Translucency

AbstractDiastrophic dysplasia is a rare genetic disorder characterized by short limbs and deformities of several joints occurring in conjunction with xyphoscoliosis, distinctive abduction of the first metacarpals (hitchhiker thumbs). A 28-year-old pregnant patient was referred due to detection of increased nuchal translucency at the first-trimester scan. We describe a case of diastrophic dysplasia diagnosed by two- and three-dimensional ultrasound and termination of pregnancy at 13 weeks of gestation. This case is the first report in the literature in which 3D ultrasound was used in diagnosis of diastrophic dysplasia as early as the 13th week of pregnancy. We think that prenatal diagnosis of diastrophic dysplasia can be possible even at first trimester.

scholarly journals Contribution of Transvaginal High-Resolution Ultrasound in Fetal Neurology

2011 ◽  
Vol 5 (2) ◽  
pp. 93-99 ◽  
Keyword(s):  
High Resolution ◽  
Three Dimensional ◽  
Fetal Brain ◽  
Vascular Anatomy ◽  
First Trimester ◽  
3D Ultrasound ◽  
Resonance Imaging ◽  
Neurological Prognosis ◽  
Transabdominal Sonography ◽  
Arteries And Veins

ABSTRACT Transvaginal high-resolution ultrasound and three-dimensional (3D) ultrasound have been establishing sonoembryology as well as neurosonography in the first trimester. Fetal brain is rapidly developing and changing its appearance week by week during pregnancy. The most important organ, but it is quite hard to observe detailed structure of this organ by conventional transabdominal sonography. It is possible to observe the whole brain structure by magnetic resonance imaging in the post half of pregnancy, but it is difficult in the first half gestation, and transvaginal high-resolution 3D ultrasound is the most powerful modality. As for brain vascularization, main arteries and veins have been demonstrated and evaluated in various CNS conditions. Transvaginal high-resolution 3D ultrasound can demonstrate cerebral fine vascular anatomy, such as medullary vessels and it is greatly expected to estimate neurological prognosis relating with vascular development during fetal period.

scholarly journals Junctional Zone in Infertile Women: A Three-dimensional Ultrasound Study

2020 ◽  
Vol 42 (03) ◽  
pp. 152-159
Author(s):  
Vanessa Silva ◽  
Flávia Fundora Ramos ◽  
Ana Filipa Matos Brás ◽  
Ricardo Filipe Sousa Santos ◽  
Maria Sofia Dantas Pinto Lobo Xavier ◽  
...  
Keyword(s):  
Three Dimensional ◽  
3D Ultrasound ◽  
Sociodemographic Factors ◽  
Structural Factors ◽  
Junctional Zone ◽  
Infertile Women ◽  
Intraobserver Reproducibility ◽  
Ultrasound Study ◽  
Endometrial Pattern ◽  
A Prospective Study

Abstract Objective To analyze the interobserver and intraobserver reproducibility of the visualization and continuity of the juncional zone (JZ) by three-dimensional (3D) ultrasound in infertile women, and to evaluate the sociodemographic, hormonal, and structural factors that influence these assessments. Methods A prospective study conducted at the Assisted Reproductive Technology Unit of Hospital Senhora da Oliveira, in the city of Guimarães, Portugal. Transvaginal 3D ultrasonography was performed, and 2 volumes were generated per case. Two observers who were blinded to each other's work analyzed these volumes, choosing the best coronal section. Four months later, one of the observers performed the same methodology. The JZ visualization was classified as optimal, satisfactory, and unsatisfactory, and the JZ continuity, as continuous and discontinuous. The interobserver and intraobserver agreements were analyzed. The influence of hormonal, structural, and sociodemographic factors on the JZ was evaluated. Results In total, 65 women were included in the present study. The interobserver reproducibility was substantial for JZ visualization and continuity (k = 0.635 and 0.753 respectively), and the intraobserver reproducibility was very good for JZ visualization and continuity (k = 0.884 and 0.816 respectively). Trilaminar endometrial pattern was associated with optimal JZ visualization (p = 0.012). The increase of 1 unit in the level of serum estradiol represents a 9.9% decrease in the odds of unsatisfactory visualization of the JZ (odds ratio [OR] = 0.9; 95% confidence interval [95%CI] = 0.814–0.996; p = 0.042). Endometriosis increases the odds of unsatisfactory visualization by 24 times (OR = 23.7; 95%CI = 1.262–437.057; p = 0.034). The prevalence of discontinuous JZs was of 60%. Myomas and endometriosis were associated with discontinuous JZs (p = 0.034 and 0.016 respectively). Conclusion The assessment of JZ visualization and continuity by 3D ultrasound is reproducible enough to be used in the clinical practice.

scholarly journals Typical changes of ethmocephaly and holoprosencephaly in a fetus at 14 weeks of gestation

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Reinhard Altmann ◽  
Christina Allerstorfer ◽  
Iris Scharnreitner ◽  
Wolfgang Arzt
Keyword(s):  
Case Report ◽  
Stem Elongation ◽  
Three Dimensional ◽  
First Trimester ◽  
Nuchal Translucency ◽  
3D Ultrasound ◽  
Normal Brain ◽  
Fetal Head ◽  
The Face ◽  
Metopic Suture

Abstract Background This case report is to show the details of the face of a very rare ethmocephaly at 14 weeks of gestation. Case presentation After the regular transabdominal two-dimensional (2D) scan for nuchal translucency we could describe the following malformations: holoprosencephaly, proboscis and an abnormal face, omphalocele containing bowel, hyperechoic kidneys and megacystis. In addition, we acquired transvaginal three-dimensional (3D) ultrasound volume blocks of the fetal head, scanned with different insonation angles and stored them for later analysis. Using the multiplanar mode the volume blocks taken from the front show all details of the face: proboscis, hypotelorism, microphthalmia, cleft palate, accelerated development of the frontal bones and premature closure of the metopic suture. The volume blocks taken through the squamosal suture show all details of the fossa posterior and brain: fused thalami surrounded by the typical monoventricle, normal brain stem, elongation of anterior membranous area. Render mode shows a precise 3D image of the face. To better demonstrate the changes of the fetal face a post-mortem photo of the fetal face is included. Conclusion This case report can demonstarte the typical changes of ethmocephaly in the first trimester using transvaginal 3D scan.

scholarly journals First-Trimester Crown-Rump Length and Embryonic Volume of Fetuses with Structural Congenital Abnormalities Measured in Virtual Reality: An Observational Study

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
L. Baken ◽  
B. Benoit ◽  
A. H. J. Koning ◽  
P. J. van der Spek ◽  
E. A. P. Steegers ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Congenital Abnormalities ◽  
Three Dimensional ◽  
First Trimester ◽  
3D Ultrasound ◽  
Relative Increase ◽  
Growth Restriction ◽  
Crown Rump Length ◽  
Reliable Parameter ◽  
The One

Background. With the introduction of three-dimensional (3D) ultrasound it has become possible to measure volumes. The relative increase in embryonic volume (EV) is much larger than that of the crown-rump length (CRL) over the same time period. We examined whether EV is a better parameter to determine growth restriction in fetuses with structural congenital abnormalities. Study Design, Subjects, and Outcome Measures. CRL and EV were measured using a Virtual Reality (VR) system in prospectively collected 3D ultrasound volumes of 56 fetuses diagnosed with structural congenital abnormalities in the first trimester of pregnancy (gestational age 7+5 to 14+5 weeks). Measured CRL and EV were converted to z-scores and to percentages of the expected mean using previously published reference curves of euploid fetuses. The one-sample t-test was performed to test significance. Results. The EV was smaller than expected for GA in fetuses with structural congenital abnormalities (−35%  p<0.001, z-score −1.44  p<0.001), whereas CRL was not (−6.43%  p=0.118, z-score −0.43  p=0.605). Conclusions. CRL is a less reliable parameter to determine growth restriction in fetuses with structural congenital abnormalities as compared with EV. By measuring EV, growth restriction in first-trimester fetuses with structural congenital abnormalities becomes more evident and enables an earlier detection of these cases.

Clinical Significance of First-Trimester Screening of the Retronasal Triangle for Identification of Primary Cleft Palate

2015 ◽  
Vol 38 (2) ◽  
pp. 135-141 ◽  
Author(s):  
Wei-Jing Li ◽  
Xue-Qin Wang ◽  
Rui-Ling Yan ◽  
Jing-Wen Xiang
Keyword(s):  
Three Dimensional ◽  
High Sensitivity ◽  
First Trimester ◽  
3D Ultrasound ◽  
First Trimester Screening ◽  
Term Delivery ◽  
Volumetric Images ◽  
Trimester Screening ◽  
Retronasal Triangle ◽  
Singleton Pregnancies

Objective: To investigate the use of the retronasal triangle (RNT) for identification of orofacial cleft (OC) in the first trimester and the clinical application of three-dimensional (3D) ultrasound techniques for confirming the diagnosis of OC. Methods: A total of 5,054 women with singleton pregnancies underwent first-trimester screening for Down syndrome at 11-13+6 weeks. The RNT was scanned in each fetus, and 3D volumetric images of cases with abnormal or indeterminate RNT were obtained. Results: Satisfactory images were obtained from all cases. Seven cases (1.4‰) of abnormal RNT were diagnosed as OC in the first trimester, which were confirmed at a 16 weeks scan or at a postmortem examination. One case that was considered a normal RNT was diagnosed with OC at 22+2 weeks and after term delivery. Six cases of indeterminate RNT were diagnosed as normal by 3D ultrasound. Identification of OC by visualization of the RNT in the first trimester had a sensitivity of 87.5% and a specificity of 99.9%. Conclusion: The RNT is an important sonographic landmark that has a high sensitivity and specificity for the detection of OC in the first trimester. 3D ultrasound is an important tool that aids in confirming diagnosis of OC in the first and second trimesters.

Placental volume measurement by 3D-ultrasound in the first trimester and prediction of fetal growth

2008 ◽  
Vol 68 (S 01) ◽  
Author(s):  
B Meurer ◽  
B Meurer ◽  
N Dinkel ◽  
N Hart ◽  
J Siemer ◽  
...  
Keyword(s):  
Fetal Growth ◽  
First Trimester ◽  
3D Ultrasound ◽  
Volume Measurement ◽  
Placental Volume

scholarly journals Three-dimensional ultrasound for knee osteophyte depiction: a comparative study to computed tomography

2021 ◽  
Author(s):  
Valeria Vendries ◽  
Tamas Ungi ◽  
Jordan Harry ◽  
Manuela Kunz ◽  
Jana Podlipská ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Automatic Segmentation ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Surgical Interventions ◽  
Structured Light Scanner ◽  
Joint Surfaces ◽  
Operative Planning ◽  
Rms Error ◽  
Tissue Characteristics

Abstract Purpose Osteophytes are common radiographic markers of osteoarthritis. However, they are not accurately depicted using conventional imaging, thus hampering surgical interventions that rely on pre-operative images. Studies have shown that ultrasound (US) is promising at detecting osteophytes and monitoring the progression of osteoarthritis. Furthermore, three-dimensional (3D) ultrasound reconstructions may offer a means to quantify osteophytes. The purpose of this study was to compare the accuracy of osteophyte depiction in the knee joint between 3D US and conventional computed tomography (CT). Methods Eleven human cadaveric knees were pre-screened for the presence of osteophytes. Three osteoarthritic knees were selected, and then, 3D US and CT images were obtained, segmented, and digitally reconstructed in 3D. After dissection, high-resolution structured light scanner (SLS) images of the joint surfaces were obtained. Surface matching and root mean square (RMS) error analyses of surface distances were performed to assess the accuracy of each modality in capturing osteophytes. The RMS errors were compared between 3D US, CT and SLS models. Results Average RMS error comparisons for 3D US versus SLS and CT versus SLS models were 0.87 mm ± 0.33 mm (average ± standard deviation) and 0.95 mm ± 0.32 mm, respectively. No statistical difference was found between 3D US and CT. Comparative observations of imaging modalities suggested that 3D US better depicted osteophytes with cartilage and fibrocartilage tissue characteristics compared to CT. Conclusion Using 3D US can improve the depiction of osteophytes with a cartilaginous portion compared to CT. It can also provide useful information about the presence and extent of osteophytes. Whilst algorithm improvements for automatic segmentation and registration of US are needed to provide a more robust investigation of osteophyte depiction accuracy, this investigation puts forward the potential application for 3D US in routine diagnostic evaluations and pre-operative planning of osteoarthritis.

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