scholarly journals The Role of HDlive Technology in Obstetrics and Gynecology, Present and Future

2014 ◽  
Vol 8 (3) ◽  
pp. 234-238
Author(s):  
Mihaela Grigore ◽  
Camelia Cojocaru ◽  
Tudor Lazar
Keyword(s):  
Imaging Techniques ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Early Embryo ◽  
Obstetrics And Gynecology ◽  
Ultrasound Images ◽  
High Definition ◽  
Maternal Bonding ◽  
4D Ultrasound

ABSTRACT Imaging techniques have continually evolved during the last few decades to improve diagnosis in obstetrics and gynecology. Developed more than 15 years ago, three-dimensional (3D) ultrasound has been widely used in clinical practice during the last decade, and its use continues to grow as researchers explore innovative new applications. High definition live (HDlive) ultrasound (US) is a novel ultrasound technology that improves both 3D and four-dimensional (4D) ultrasound images. This technology can mainly be used to study normal and pathologic embryonic and fetal development. HDlive could be important to perinatal research and could provide a better understanding of the development of the early embryo and fetus. Because of the natural pictures of the fetus that it provides, HDlive could be beneficial for increasing the fetal-maternal bonding, an important factor for healthy behavior during the pregnancy. In gynecology, HDlive could be useful in providing a better image of the adnexal pathology or coronal plane of the uterus. Although its advantages need to be further explored, in our opinion, HDlive is an innovative technique and a useful tool with applications both in obstetrics and gynecology. How to cite this article Grigore M, Cojocaru C, Lazar T. The Role of HDlive Technology in Obstetrics and Gynecology, Present and Future. Donald School J Ultrasound Obstet Gynecol 2014;8(3):234-238.

scholarly journals The Role of Three-dimensional Ultrasound in the Assessment of Congenital Uterine Anomalies

2012 ◽  
Vol 6 (4) ◽  
pp. 415-423
Author(s):  
Sarah Tabi
Keyword(s):  
Three Dimensional ◽  
3D Ultrasound ◽  
Ultrasound Images ◽  
Septate Uterus ◽  
Saline Infusion Sonography ◽  
Unicornuate Uterus ◽  
Uterine Anomalies ◽  
Different Types ◽  
2D Ultrasound

ABSTRACT Three-dimensional (3D), two-dimensional (2D) ultrasound and saline infusion sonography (SIS) are beneficial tools in diagnosing congenital uterine anomalies. This article illustrates six various case scenarios based on 3D ultrasound images in order to review the concepts of ultrasound diagnosis of congenital uterine anomalies and apply it to the presented case studies. These cases scenarios educate the reader on arcuate uterus, septate uterus, bicornuate uterus, didelphic uterus, uterus duplex and unicornuate uterus. This article also presents the sequence of embryologic events leading to the congenital uterine anomalies. The role of 3D ultrasound in diagnosis and treatment of congenital uterine anomalies is presented, along with its advantages over 2D ultrasound, SIS, X-ray hysterosalpingography, magnetic resonance imaging, hysteroscopy and laparoscopy. The effects of hysteroscopic metroplasty on fertility are also illustrated and discussed. After this case-based discussion is completed, the readers will be able to make a differential diagnosis of the different types of congenital uterine anomalies. How to cite this article Tabi S, Kupesic Plavsic S. The Role of Three-dimensional Ultrasound in the Assessment of Congenital Uterine Anomalies. Donald School J Ultrasound Obstet Gynecol 2012;6(4):415-423.

scholarly journals Role of three-dimensional ultrasound in females with obstructed defecation (in comparison with defecography)

2019 ◽  
Vol 51 (1) ◽  
Author(s):  
Mahmoud Abdel Latif ◽  
Magda Shady ◽  
Nahla M. Elawadly ◽  
Waleed M. Thabet
Keyword(s):  
Pelvic Floor Disorders ◽  
Imaging Techniques ◽  
Obstructed Defecation ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Control Group ◽  
Case Group ◽  
Hiatal Area ◽  
Muscle Attenuation

Abstract Background Growing attention of pelvic floor disorders has led to development of new imaging techniques, with increasing importance of ultrasonography. The 3DUS technique is considered an accessible tool for imaging of the posterior pelvic compartment. The purpose of this study is to highlight the role of 3D ultrasound in evaluation of obstructed defecation in females and comparing the findings with defecography. Results Study included 30 females classified into two groups: (1) 20 patients (case group complaining of obstructed defecation); (2) ten females (control group-normal nulliparous females). All of them were subjected to defecography and 3D ultrasound during resting, squeezing, and straining. Detection rate of rectocele and intussusception with 3D ultrasound was lower than defecography. By US, significant statistical difference between patients and controls in all measurements of levator hiatus, IS, ES, and PRS thickness during straining (P value < 0.001). During straining, cut-off value of 20.75 cm2 for hiatal area gives sensitivity of 100% and specificity of 95% and using ARA, cut-off value of 105° gives sensitivity of 98% and specificity of 90% for differentiation between patients and controls. Conclusion Ultrasound can be considered a complementary test to defecography in investigation of patients with obstructed defecation. Ultrasound can diagnose levator muscle attenuation and avulsion, thickness of IS, ES, PRS, and distensibility of hiatal area.

scholarly journals Three-dimensional Ultrasound in Detection of Fetal Anomalies

2016 ◽  
Vol 10 (3) ◽  
pp. 214-234 ◽  
Author(s):  
Ritsuko K Pooh
Keyword(s):  
Light Source ◽  
New Technology ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Fetal Anomalies ◽  
High Definition ◽  
Ultrasound Technique ◽  
Great Achievement ◽  
4D Ultrasound

ABSTRACT In the history of 3D/4D ultrasound technology, the great achievement was high definition (HD) live technology. This technology is a novel ultrasound technique that improves the 3D/4D images. HDlive ultrasound has resulted in remarkable progress in visualization of early embryos and fetuses and in the development of sonoembryology. HDlive uses an adjustable light source and software that calculates the propagation of light through surface structures in relation to the light direction. The virtual light source produces selective illumination, and the respective shadows are created by the structures where the light is reflected. This combination of light and shadows increases depth perception and produces remarkable images that are more natural than those obtained with classic three-dimensional (3D) ultrasound. The virtual light can be placed in the front, back, or lateral sides, where viewing is desired until the best image is achieved. A great advantage is that the soft can be applied to all images stored in the machine's memory. With HDlive ultrasound, both structural and functional developments can be assessed from early pregnancy more objectively and reliably and, indeed, the new technology has moved embryology from postmortem studies to the in vivo environment. Practically, in obstetrical ultrasound, HDlive could be used during all three trimesters of pregnancy. How to cite this article Pooh RK, Kurjak A. Three-dimensional Ultrasound in Detection of Fetal Anomalies. Donald School J Ultrasound Obstet Gynecol 2016;10(3):214-234.

Three-dimensional HDlive Thick-Slice Silhouette of Fetal Brain

2016 ◽  
Vol 10 (1) ◽  
pp. 1-2
Author(s):  
Ritsuko K Pooh
Keyword(s):  
Obstet Gynecol ◽  
Three Dimensional ◽  
Fetal Brain ◽  
Normal Brain ◽  
Fetal Anomalies ◽  
High Definition ◽  
Brain Image ◽  
Great Achievement ◽  
4D Ultrasound

ABSTRACT Three-dimensional (3D) and four-dimensional (4D) ultrasound have improved our knowledge regarding the development of the embryo and fetus and of a great number of fetal anomalies. The great achievement in the field of 3D/4D ultrasound is high definition live (HDlive) technology and HDlive silhouette/flow technology. HDlive silhouette emphasizes the borderlines between organs with different echogenicity and it can be appropriately named as ‘see-through fashion’. However, it occasionally appears to demonstrate too many inner structures overlapping one another to understand their relations. The author has cut the volume dataset with a rectangle cube and rendered the cut slice with silhouette ultrasound and called as ‘thick-slice silhouette’. Normal brain image in the coronal cutting section by thick-slice silhouette imaging is the picture of the month. This method is useful to identify the inner structure of the organs. How to cite this article Pooh RK. Three-dimensional HDlive Thick-Slice Silhouette of Fetal Brain. Donald School J Ultrasound Obstet Gynecol 2016;10(1):1-2.

scholarly journals Complementing crystallography: the role of cryo-electron microscopy in structural biology

1999 ◽  
Vol 55 (10) ◽  
pp. 1742-1749 ◽  
Author(s):  
Jonathan M. Grimes ◽  
Stephen D. Fuller ◽  
David I. Stuart
Keyword(s):  
Image Reconstruction ◽  
Core Protein ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Computational Techniques ◽  
Virus Structure ◽  
Macromolecular Assemblies ◽  
B Virus

Dramatic improvements in experimental methods and computational techniques have revolutionized three-dimensional image reconstruction from electron micrographs (EM) of vitrified samples. Recent results include the first determination of a protein fold (for the core protein of the hepatitis B virus) by non-crystalline imaging techniques. These developments have generated interest within the crystallographic community and have led to a re-evaluation of the technique, particularly amongst those working in the field of virus structure or struggling with the phasing of large macromolecular assemblies. A simple discussion of the techniques of EM image reconstruction and its advantages and problems in terms familiar to crystallographers will hopefully allow an appreciation of the essential complementarity of the two techniques and the practical potentials for phasing applications.

scholarly journals Developmental plasticity, cell fate specification and morphogenesis in the early mouse embryo

2014 ◽  
Vol 369 (1657) ◽  
pp. 20130538 ◽  
Author(s):  
Ivan Bedzhov ◽  
Sarah J. L. Graham ◽  
Chuen Yan Leung ◽  
Magdalena Zernicka-Goetz
Keyword(s):  
Cell Fate ◽  
Mouse Embryo ◽  
Developmental Plasticity ◽  
Molecular Mechanisms ◽  
Imaging Techniques ◽  
Cell Signalling ◽  
Three Dimensional ◽  
Early Embryo ◽  
Mammalian Development ◽  
Cell Fate Decisions

A critical point in mammalian development is when the early embryo implants into its mother's uterus. This event has historically been difficult to study due to the fact that it occurs within the maternal tissue and therefore is hidden from view. In this review, we discuss how the mouse embryo is prepared for implantation and the molecular mechanisms involved in directing and coordinating this crucial event. Prior to implantation, the cells of the embryo are specified as precursors of future embryonic and extra-embryonic lineages. These preimplantation cell fate decisions rely on a combination of factors including cell polarity, position and cell–cell signalling and are influenced by the heterogeneity between early embryo cells. At the point of implantation, signalling events between the embryo and mother, and between the embryonic and extraembryonic compartments of the embryo itself, orchestrate a total reorganization of the embryo, coupled with a burst of cell proliferation. New developments in embryo culture and imaging techniques have recently revealed the growth and morphogenesis of the embryo at the time of implantation, leading to a new model for the blastocyst to egg cylinder transition. In this model, pluripotent cells that will give rise to the fetus self-organize into a polarized three-dimensional rosette-like structure that initiates egg cylinder formation.

Ultrasound diagnosis of myelomeningocele: the role of 3D ultrasonography in determining surficial status of the pathological lesion

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Akiko Kurasaki ◽  
Junichi Hasegawa ◽  
Chika Homma ◽  
Ayako Miura ◽  
Haruhiro Kondo ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Treatment Strategies ◽  
3D Ultrasound ◽  
Unborn Child ◽  
Clinical Imaging ◽  
Present Case Report ◽  
Case Presentation ◽  
Appropriate Treatment ◽  
3D Ultrasonography

AbstractObjectivesSpina bifida manifests in various forms, and the clinical imaging findings depend on the level of the vertebral defect. It is difficult to predict the severity of the neurological symptoms and the degree of urgency of early treatment antenatally.Case presentationIn the present case report of fetal myelomeningocele (MMC), three-dimensional (3D) ultrasound showed accurate findings of fetal back surficial skin and tissue defect. The neonatologist and surgeons were able to decide upon appropriate treatment strategies on the basis of these findings.Conclusions3D ultrasound helps provide information to neonatologists and neurosurgeons about the initial treatment and illustrates the physical appearance of the disease for the parents of the unborn child.

scholarly journals HDlive in the Assessment of Fetal Intracranial, Intrathoracic and Intra-abdominal Anomalies

2014 ◽  
Vol 8 (4) ◽  
pp. 362-375 ◽  
Author(s):  
Toshiyuki Hata
Keyword(s):  
Obstet Gynecol ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Future Research ◽  
Cystic Lesions ◽  
Two Dimensional ◽  
Fetal Anomalies ◽  
Inversion Mode ◽  
Innovative Tool

ABSTRACT We present a series of images of different fetal intracranial, intrathoracic and intra-abdominal anomalies reconstructed using HDlive. It is a novel three-dimensional (3D) ultrasound modality that can provide the operator with naturally realistic features of any fetal anomalies. HDlive and its inversion mode are applied in several cases and two-dimensional (2D) sonographic images of different anomalies are also presented clearly to compare the advantages of HDlive in this article. This review focuses on the role of HDlive in the presence of such anomalies. HDlive should be a very useful aid in adjunct to other ultrasound modalities, specifically in cases that warrant detailed information. It can also be useful for the antenatal surveillance of anomalies, such as cystic lesions that may progress to complications. This innovative tool offers many promising advantages in clinical practice and future research on fetal anomalies. How to cite this article Cajusay-Velasco S, Hata T. HDlive in the Assessment of Fetal Intracranial, Intrathoracic and Intraabdominal Anomalies. Donald School J Ultrasound Obstet Gynecol 2014;8(4):362-375.

scholarly journals Critical Role of 3D ultrasound in the diagnosis and management of Robert’s uterus: a single-centre case series and a review.

2021 ◽  
Vol 13 (1) ◽  
pp. 41-49
Author(s):  
M. Deenadayal ◽  
V. Günther ◽  
I. Alkatout ◽  
D. Freytag ◽  
A. Deenadayal-Mettler ◽  
...  
Keyword(s):  
Correct Diagnosis ◽  
Critical Role ◽  
Three Dimensional ◽  
Case Series ◽  
Uterine Cavity ◽  
Laparoscopic Hysterectomy ◽  
3D Ultrasound ◽  
Magnetic Resonance Imaging Mri ◽  
Treatment Procedures

A septate uterus with a non-communicating hemicavity was first described by Robert in 1969/70 as a specific malformation of the uterus. The condition is commonly associated with a blind uterine hemicavity, unilateral haematometra, a contralateral unicornuate uterine cavity and a normal external uterine fundus. The main symptoms are repetitive attacks of pain at four-weekly intervals around menarche, repeated dysmenorrhea, recurrent pregnancy loss and infertility. In this report, we review the disease, its diagnosis and treatment, and describe five cases of Robert’s uterus. Three dimensional (3D) ultrasound (US) imaging was performed by the transvaginal route in four cases. In the fifth case of a 13-year-old girl, we avoided the vaginal route and magnetic resonance imaging (MRI) and 3D transrectal US yielded the correct diagnosis. The following treatment procedures were undertaken: laparoscopic endometrectomy, hysteroscopic septum resection, laparoscopic uterine hemicavity resection and total laparoscopic hysterectomy (TLH). The diagnosis and optimum treatment of Robert’s uterus remains difficult for clinicians because of its rarity. A detailed and careful assessment by 3D US should be performed, followed by hysteroscopy in combination with laparoscopy, to confirm the diagnosis.

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