Three-Dimensional (3D) Sonography in Gynecology

2017 ◽  
Vol 43 ◽  
pp. S127
Author(s):  
ho-yen Chueh
Keyword(s):  
Three Dimensional ◽  
3D Sonography

Two- and three-dimensional sonography of anomalies of orofacial area in the first trimester of gestation

2020 ◽  
Author(s):  
N.A. Venchikova, À.À. Ershova-Pavlova, I.V. Novikova et all
Keyword(s):  
Pregnant Women ◽  
Three Dimensional ◽  
First Trimester ◽  
Population Based ◽  
Control Group ◽  
Axial Section ◽  
Mother And Child ◽  
Trimester Screening ◽  
2D Ultrasound ◽  
3D Sonography

As part of the population-based prenatal screening of 900 pregnant women, who underwent 1st trimester screening at the RPMC “Mother and Child” in 2018–2019, an ultrasound scan of the fetal palate was performed to evaluate the effectiveness of new ultrasound markers in detecting orofacial clefts (OFC). Fetal palatal defects were screened at a 2D assessment of bone markers of the palate – the image of the palatal line in the sagittal section, the retronasal triangle in the coronary section, the alveolar arch of the upper jaw in the axial section. If a palate abnormality was detected or suspected in the 2D study, the fetal palate was evaluated using the 3D mode. In 50 pregnant women of the control group, 3D sonography of the fetal palate was performed in the norm. In total, during the gestation period of 10+5–12+5 weeks, 10 cases of OFC were detected, of which 1 case was a median lip/palate cleft (LPC), 6 — bilateral LPC, 1 — left-sided LPC, 1 — unspecified LPC, 1 — PC. Visualization of 2D ultrasound markers was possible in 9 cases of palate anomalies, 3D assessment worked out in all 10 cases. In all identified OFC cases, cytogenetic and/or pathomorphological studies were performed.

scholarly journals P25.10: Use of three-dimensional (3D) sonography to assess the true midsagittal plane of fetal spine

2010 ◽  
Vol 36 (S1) ◽  
pp. 267-267
Author(s):  
M. Chen ◽  
X. Yang ◽  
T. Leung ◽  
S. Wong ◽  
T. Lau
Keyword(s):  
Three Dimensional ◽  
Midsagittal Plane ◽  
Fetal Spine ◽  
3D Sonography

Interobserver Agreement in the Study of 2D and 3D Sonographic Criteria for Adenomyosis

2017 ◽  
Vol 9 (3) ◽  
pp. 211-215 ◽  
Author(s):  
José M. Puente ◽  
Juan L. Alcazar ◽  
Pilar Martinez-Ten ◽  
Carmina Bermejo ◽  
María T. Troncoso ◽  
...  
Keyword(s):  
Interobserver Agreement ◽  
Transvaginal Ultrasound ◽  
Three Dimensional ◽  
Kappa Index ◽  
Junctional Zone ◽  
Experienced Observer ◽  
3D Sonography ◽  
2D And 3D ◽  
Very High ◽  
Good Agreement

Objective To study the degree of interobserver agreement for already known two-dimensional (2D) and three-dimensional (3D) sonography criteria of adenomyosis. Methods Fifty cases (25 adenomyosis cases, 25 non-adenomyosis cases) were studied by four expert observers and a less-experienced researcher. Each sonographic adenomyosis criterion was separately studied. Interobserver agreement was analysed by the kappa index with 95% confidence interval (CI). Results The degree of agreement about diagnosing adenomyosis was high or very high in all pair-wise comparisons (kappa values of 0.58–0–92). The agreement on identifying intra-myometrial cysts (kappa values of 0.46–0.79) and evaluating the junctional zone (JZ) by 3D-transvaginal ultrasound (3D-TVS) (kappa index of 0.46–0.88) was good. The agreements reached when evaluating the other criteria varied, but good agreement was generally reached. Conclusions Both the 2D-TVS and 3D-TVS criteria employed in diagnosing adenomyosis were reproducible parameters in adenomyosis diagnostics. The results were reproducible, even by a less experienced observer.

scholarly journals Diagnostic Accuracy of 3D-transvaginal Ultrasound Compared to Hysteroscopy in Detecting Uterine Abnormalities Before ICSI

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
M M Alsherbiny ◽  
A A M Riad ◽  
H A Hamdoun
Keyword(s):  
Diagnostic Accuracy ◽  
Transvaginal Ultrasound ◽  
Three Dimensional ◽  
Uterine Cavity ◽  
University Hospital ◽  
Uterine Disease ◽  
Ibn Sina ◽  
Volume Imaging ◽  
Uterine Anomalies ◽  
3D Sonography

Abstract Introduction Various forms of female infertility were associated with congenital uterine anomalies and acquired uterine disease. In fact, the myometrium can only be indirectly imaged by X-ray hysterosalpingography but is directly seen on Ultrasonography. More recently, further advances in ultrasonography have led to three-dimensional multiplanar or volume imaging (three-dimensional ultrasonography [3DUS]) in which sonographic images are obtained from a volume of ultrasonographic data (rather than from a slice of data) the application of 3DUS to gynecologic imaging has suggested a role for transvaginal 3DUS in the assessment of uterine anomalies and endometrial lesions. Aim To evaluate the diagnostic accuracy and sensitivity of Hysteroscopy vs TV3D in the evaluation of the uterine abnormalities in infertile women before ICSI. Methodology This is a study including 60 patients were selected from the outpatient gynecological clinic, private center at Sohag government (Ibn Sina Center) in collaboration with (Ain Shams University Hospital in IVF unit) from12/2017 -8/2018. All cases files are computerized and saved in Ibn Sina Center. Results The overall result of accuracy of different modalities was 98.3% for 3D sonography and the accuracy of different modalities in detection of endometrial polyp was 93.3% for 3D sonography and 100% for hysteroscopy. The accuracy of different modalities in detection of septate uterus was 100% for 3D sonography and hysteroscopy. The accuracy of different modalities in detection of intrauterine adhesions was 100% for 100% for 3D and hysteroscopy. Conclusion Hysteroscopy is the gold standard diagnostic & therapeutic tool for uterine anomalies (bicornuate, septate, arcuate, polyp), However 3D ultrasonography is diagnostic tool only but superior to hysteroscopy in certain lesions e.g. (subserous and intramural fibroid). Recommendation we recommend 3D to become soon as the diagnostic procedure of choice in assessment of suspected uterine lesions. Furthermore, we recommend that 3D US, if available, to be performed routinely for all cases of uterine cavity anomalies and prior to corrective uterine surgery.

scholarly journals HDlive in the Assessment of Fetal Facial Abnormalities

2014 ◽  
Vol 8 (4) ◽  
pp. 344-352
Author(s):  
Hirokazu Tanaka ◽  
Rina Uematsu
Keyword(s):  
Obstet Gynecol ◽  
Three Dimensional ◽  
In Utero ◽  
Diagnostic Modality ◽  
Anatomical Structures ◽  
Shadowing Effect ◽  
Facial Anatomy ◽  
3D Sonography ◽  
Facial Images ◽  
New Skin

ABSTRACT We present the latest HDlive images of normal fetal faces and facial abnormalities. Fetal facial anatomical structures, such as the eyes, nose, ears and mouth, are clearly evident at 12 to 13 weeks of gestation. HDlive with the use of new skin-like colors provides sonographers and physicians with a natural and anatomically realistic appearance of the fetal face. Moreover, HDlive images provide entirely new visual experiences for obstetricians owing to the anatomically realistic depiction of the normal fetal face and fetal facial abnormalities in utero. HDlive can provide clearer facial images than conventional three-dimensional (3D) sonography. In particular, HDlive is superior to conventional 3D sonography for the depiction of fetal eyes because of its shadowing effect. HDlive may be a useful diagnostic modality for the antenatal evaluation of normal fetal facial anatomy and fetal facial abnormalities. How to cite this article Hata T, Hanaoka U, Uematsu R, Marumo G, Tanaka H. HDlive in the Assessment of Fetal Facial Abnormalities. Donald School J Ultrasound Obstet Gynecol 2014;8(4):344-352.

Use of three-dimensional (3D) sonography to assess the true midsagittal plane of fetal spine

2010 ◽  
Vol 24 (2) ◽  
pp. 297-300 ◽  
Author(s):  
Xiao Hong Yang ◽  
Min Chen ◽  
Tak Yeung Leung ◽  
Sau Mei Wong ◽  
Tze Kin Lau
Keyword(s):  
Three Dimensional ◽  
Midsagittal Plane ◽  
Fetal Spine ◽  
3D Sonography

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

Conformation of Ribosomes from Escherichia Coli

1974 ◽  
Vol 32 ◽  
pp. 210-211
Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins
Keyword(s):  
Binding Sites ◽  
Ribosomal Proteins ◽  
Fluorescent Dyes ◽  
Protein Biosynthesis ◽  
Three Dimensional ◽  
Spatial Arrangement ◽  
Dimensional Structure ◽  
Complete Understanding ◽  
And Function

The present knowledge of the three-dimensional structure of ribosomes is far too limited to enable a complete understanding of the various roles which ribosomes play in protein biosynthesis. The spatial arrangement of proteins and ribonuclec acids in ribosomes can be analysed in many ways. Determination of binding sites for individual proteins on ribonuclec acid and locations of the mutual positions of proteins on the ribosome using labeling with fluorescent dyes, cross-linking reagents, neutron-diffraction or antibodies against ribosomal proteins seem to be most successful approaches. Structure and function of ribosomes can be correlated be depleting the complete ribosomes of some proteins to the functionally inactive core and by subsequent partial reconstitution in order to regain active ribosomal particles.

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