scholarly journals OC061: Three-dimensional ultrasound volume calculations of human embryos and young fetuses: a study on volumetry and its reproducibility

2004 ◽  
Vol 24 (3) ◽  
pp. 232-233
Author(s):  
H.-G. K. Blaas ◽  
P. Taipale ◽  
H. Torp ◽  
S. H. Eik-Nes
Keyword(s):  
Three Dimensional ◽  
Human Embryos ◽  
Volume Calculations

PS01.031: REVISITING THE ESOPHAGOGASTRIC JUNCTION ANATOMY: WHERE IS THE INFRACARDIAC BURSA?

2018 ◽  
Vol 31 (Supplement_1) ◽  
pp. 58-59
Author(s):  
Tatsuro Nakamura ◽  
Hisashi Shinohara ◽  
Tomoaki Okada ◽  
Shigeo Hisamori ◽  
Shigeru Tsunoda ◽  
...  
Keyword(s):  
Esophagogastric Junction ◽  
Conflicts Of Interest ◽  
Three Dimensional ◽  
Human Embryos ◽  
Closed Space ◽  
Mr Images ◽  
Crown Rump Length ◽  
Transhiatal Approach ◽  
Dimensional Reconstruction ◽  
The Right

Abstract Background The infracardiac bursa (ICB), the closed space encountered in the esophagogastric junction (EGJ) surgery, is rarely described in anatomical atlases. The purpose of the study is to link surgery to embryology and propose the new anatomical chart including the ICB. Methods Histological serial sections of Carnegie stages (CS) 13–23 embryos and magnetic resonance (MR) images of the fetus with 43.5 mm crown-rump length from the Kyoto Collection of Human Embryos were examined for embryological changes in the ICB. Seventy-four surgery videos of laparoscopic and thoracoscopic esophagectomy were reviewed to investigate the appearance of the ICB and frequency of the recognition in surgery. Results The right pneumato-enteric recess appeared in CS13 embryos and the ICB was separated from the recess by the development of the diaphragm between CS17 and CS18 embryos and established as a closed space up until CS23. The three-dimensional reconstruction of fetus MR images showed the ICB was located adjacent nearly one third around the esophagus above the right crus. The ICB was clinically encountered in 12 of 14 (86%) transhiatal surgeries and 23 of 60 (38%) thoracic surgeries. Via the transhiatal approach, the caudal edge of the ICB appeared as a thick whitish membrane after the dissection of the phrenico-esophageal ligament and a closed space enveloped with a serosa was opened by the incision of the membrane. Via the right thoracic approach, the ICB appeared on the right crus after the dissection of the pulmonary ligament. Conclusion We described a new chart around EGJ including the ICB based on embryology. This anatomical chart can contribute to promote accuracy and safety of operating procedures around the EGJ. Disclosure All authors have declared no conflicts of interest.

Anatomical Variability of Fascial-Muscle Formations of the Thorax in 4-6-Month Human Fetuses

2021 ◽  
Vol 6 (5) ◽  
pp. 134-140
Author(s):  
T. V. Khmara ◽  
◽  
I. I. Okrym ◽  
M. Yu. Leka ◽  
I. D. Kiiun ◽  
...  
Keyword(s):  
Pectoralis Major Muscle ◽  
Three Dimensional ◽  
Spinal Column ◽  
Vertical Direction ◽  
Posterior Wall ◽  
Pectoralis Major ◽  
Human Embryos ◽  
Human Fetuses ◽  
Surgical Interventions ◽  
Rib Cartilage

The development of rational accesses and methods of surgical interventions to the chest walls, muscles and vascular-nerve formations of the chest involves clarifying data on the topography of fascia, superficial and deep muscles of the chest at different stages of human ontogenesis. The purpose of the study. Identification of macromicroscopic structure and topography of fascia and chest muscles in 4-6-month human fetuses. Materials and methods. The study was performed using microscopy of a series of consecutive histological sections of 29 human embryos of 81.0-230.0 mm parietal-coccygeal length, production of three-dimensional reconstruction models and morphometry. Results and discussion. In some early fetuses, and in isolated cases in the same fetus, there is anatomical variability of the pectoralis major muscle, characterized by asymmetry of shape, size and topography of individual parts of the right and left pectoralis major muscles. The underdevelopment of the individual muscle bundles of the sternocostal part of the pectoralis major muscle, hypoplasia of the internal intervertebral muscles, aplasia of the external intercostal membrane, internal intercostal and subcostal muscles, transverse muscles of the chest is described. Conclusion. In human fetuses of 4-6 months old there is anatomical variability of the chest muscles, characterized by bilateral asymmetry, variability of shape, size and topography of both their individual parts and muscle as a whole. In early human fetuses, thoracic fascia is a rather thin structural plate, in the structure of which there is no layering. Intervertebral spaces at the level of rib cartilage are filled with internal intervertebral muscles, the fibers of which near the edges of the thorax have a vertical direction, and from the point of connection of the rib cartilage to the thorax – oblique. In the gap between the external and internal intervertebral muscles of fascia as such is not manifested, but only a small layer of loose fiber is determined, in which the vascular-nerve bundles pass. In the fetuses of 6 months, the endothorаcic fascia on the posterior wall of the chest is somewhat thickened, split into separate plates and forms fascial cases for vascular-nerve formations located near the spinal column

scholarly journals Features of the formation of certain bones of the skull at the early stages of human ontogenesis

2021 ◽  
Vol 25 (3 (99)) ◽  
pp. 144-148
Author(s):  
O. Tsyhykalo ◽  
R. Dmytrenko ◽  
I. Popova ◽  
B. Banul
Keyword(s):  
Human Embryo ◽  
Three Dimensional ◽  
Parietal Bone ◽  
Human Embryos ◽  
Invasive Treatment ◽  
Intrauterine Development ◽  
Early Stages ◽  
Ossification Centers ◽  
Parietal Bones ◽  
Skull Bones

The study of morphogenesis and embryotopography of skull bones is important not only in understanding the normal development of the human embryo but also will improve existing methods of invasive treatment and visualization of various pathologies of the central nervous system in children.The aim was to investigate the peculiarities of morphogenesis and topography of some skull bones during the early stages of human ontogenesis.Material and methods. We have studied 14 series of consecutive histological sections of human embryos and pre-fetuses aged 6 to 11 weeks of intrauterine development by using a set of topical morphological methods (anthropometry, morphometry, histology, three-dimensional reconstruction).Results. The frontal and parietal bones appear at the end of the embryonic period as mesenchymal rudiments that gradually expand upwards from primary points of ossification (starting from the basolateral parts of the head). During 8th week of IUD, the germ of the ectomeningeal capsule is detected in the form of a thin plate, close to the brain. At the beginning of the pre-fetal period, histological signs of membranous ossification are revealed; frontal and parietal bones develop from paired rudiments, which gradually fuse, which was accompanied by active angiogenesis.Conclusions. The primary ossification centers in frontal and parietal bones of the human embryo appear at the beginning of embryological period and develop by membranous type. Two ossification centers appear in frontal and parietal bones and they gradually merge. At the beginning of the prenatal period, the rudiment of a small wing of the sphenoid, spheno-ethmoidal cartilage and signs of merging of both ossification centers in the parietal bone are detected.

scholarly journals 3D/4D Volumetry in the Second and Third Trimester of Pregnancy

2009 ◽  
Vol 3 (2) ◽  
pp. 18-24
Keyword(s):  
Prenatal Diagnosis ◽  
Potential Benefit ◽  
Three Dimensional ◽  
Review Of The Literature ◽  
Third Trimester ◽  
Technical Aspects ◽  
Volume Calculations ◽  
Fetal Malformations ◽  
2D Ultrasound ◽  
Technological Improvements

ABSTRACT Purpose of the review The technological improvements have greatly progressed on three-dimensional ultrasonography. This review summarizes these technical changes and the latest advances of their use in prenatal diagnosis. Material and methods Review of the literature. Results The new technical aspects of the volumetry, improvement of different render modes, the postprocessing modalities, and innovations on volume calculations are extensively described, as well as detailed, organ based diagnosis of different malformations in the second and third trimester are summarized. Conclusion Though the traditional 2D ultrasound with high resolution provides a great diagnostic tool in detection of fetal malformations, there is no doubt that the 3D/4D technique offers a new power in prenatal diagnosis. Three-dimensional ultrasound can assist in the diagnosis of different, rare malformations because it offers a potential benefit of understanding spatial relationships of normal and abnormal fetal anatomy.

Developmental anatomy of the liver from computerized three-dimensional reconstructions of four human embryos (from Carnegie stage 14 to 23)

2015 ◽  
Vol 200 ◽  
pp. 105-113 ◽  
Author(s):  
Martin Lhuaire ◽  
Romain Tonnelet ◽  
Yohann Renard ◽  
Tullio Piardi ◽  
Daniele Sommacale ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Human Embryos ◽  
Developmental Anatomy ◽  
Carnegie Stage

Accuracy of Three Software Applications for Breast Volume Calculations from Three-Dimensional Surface Images

2018 ◽  
Vol 142 (4) ◽  
pp. 858-865 ◽  
Author(s):  
Tycho S. Wesselius ◽  
Arico C. Verhulst ◽  
Rinaldo D. Vreeken ◽  
Tong Xi ◽  
Thomas J. J. Maal ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Breast Volume ◽  
Software Applications ◽  
Volume Calculations ◽  
Dimensional Surface ◽  
Surface Images

scholarly journals Development of Lumbosacral Spina bifida: Three-Dimensional Computer Graphic Study of Human Embryos at Carnegie Stage Twelve

2001 ◽  
Vol 35 (5) ◽  
pp. 247-252 ◽  
Author(s):  
Moududul Haque ◽  
Kenji Ohata ◽  
Toshihiro Takami ◽  
Sergio Branco Soares, Jr. ◽  
Sarun Nunta Aree ◽  
...  
Keyword(s):  
Spina Bifida ◽  
Computer Graphic ◽  
Three Dimensional ◽  
Human Embryos ◽  
Carnegie Stage
Sign in / Sign up

Export Citation Format

Share Document