Three-dimensional reconstruction and cross-sectional anatomy of the thigh musculature of the developing chick embryo (Gallus gallus)

1991 ◽  
Vol 208 (3) ◽  
pp. 293-309 ◽  
Author(s):  
Richard F. Drushel ◽  
Arnold I. Caplan
Keyword(s):  
Chick Embryo ◽  
Three Dimensional ◽  
Gallus Gallus ◽  
Three Dimensional Reconstruction ◽  
Cross Sectional ◽  
Sectional Anatomy ◽  
Dimensional Reconstruction

Narrowest (ISTHMUS) Portion of Eustachian Tube: A Computer-Aided Three-Dimensional Reconstruction and Measurement Study

1997 ◽  
Vol 106 (7) ◽  
pp. 583-588 ◽  
Author(s):  
Masaharu Sudo ◽  
Isamu Sando ◽  
Akihiro Ikui ◽  
Chiaki Suzuki
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Three Dimensional ◽  
Three Dimensional Reconstruction ◽  
Cross Sectional ◽  
Computer Aided ◽  
Dimensional Reconstruction ◽  
Tensor Veli Palatini Muscle ◽  
Normal Human ◽  
Temporal Bones

Nine normal human temporal bones from persons 16 to 88 years old were studied by computer aided three-dimensional reconstruction and measurement. The length of the eustachian tube (ET) lumen in three portions (from pharyngeal orifice to tympanic orifice: cartilaginous, junctional, and bony) averaged 23.6 ±4.3 mm, 3.0 ± 1.9 mm, and 6.4 ± 2.6 mm. The narrowest portion of the ET lumen was in the cartilaginous portion in all cases: 20.5 ± 4.2 mm from the pharyngeal orifice and 3.1 ± 1.6 mm from the pharyngeal margin of the junctional portion. The cross-sectional area of the narrowest portion was 0.65 ± 0.2 mm2. The tendon of the tensor veli palatini muscle (TVPM) inserted into the lateral lamina in the narrowest portion of the ET lumen in five of nine cases. These results suggest that contraction of the TVPM opens the narrowest portion of the ET lumen to ventilate the middle ear and that this portion also plays a role in protecting the middle ear.

Subcostal real-time three-dimensional echocardiography of interatrial communications: reconstruction of an oval fossa defect, a superior sinus venosus defect with partially anomalous pulmonary venous drainage, an infero-posterior oval fossa defect, and a coronary sinus defect

2011 ◽  
Vol 22 (2) ◽  
pp. 145-151 ◽  
Author(s):  
Karolina M. G. Bilska ◽  
Claudia M. J. Kehrens ◽  
Gillian Riley ◽  
Robert H. Anderson ◽  
Jan Marek
Keyword(s):  
Real Time ◽  
Coronary Sinus ◽  
Three Dimensional ◽  
Venous Drainage ◽  
Sinus Venosus ◽  
Three Dimensional Reconstruction ◽  
Cross Sectional ◽  
Dimensional Reconstruction ◽  
Dimensional Echocardiography ◽  
Three Dimensional Echocardiography

AbstractReal-time three-dimensional echocardiography can surpass simple cross-sectional echocardiography in providing precise details of cardiac lesions. For the purpose of optimising treatment, we describe our findings with real-time three-dimensional echocardiography when interrogating different types of communications permitting interatrial shunting. A three-dimensional reconstruction of defects within the oval fossa enabled reliable identification of location, size, and integrity of surrounding rims. In the superior sinus venosus defect associated with partially anomalous pulmonary venous drainage, three-dimensional reconstruction helped to provide a better understanding of the relationship between the interatrial communication, the orifice of the superior caval vein, and the connections of the right upper pulmonary vein. In the defect opening infero-posteriorly within the oval fossa, three-dimensional reconstruction helped to avoid the risk of potentially inappropriate closure of the defect by suturing the hyperplastic Eustachian valve to the atrial wall, which could have diverted the inferior caval venous return into the left atrium, or obstructed the caval venous orifice. In the coronary sinus defect, three-dimensional echocardiography provided a ‘face to face’ view of the entire coronary sinus roof, showing a circular defect communicating with the cavity of the left atrium. Acquisition of the full-volume data sets took less than 2 minutes for the patients having defects within the oval fossa, and no more than 3 minutes for the patients with the sinus venosus and coronary sinus defects. Post-processing for the defects in the oval fossa took from 5 to 8 minutes, and from 12 to 16 minutes for the more complicated defects.ConclusionCross-sectional two-dimensional echocardiography can establish correct diagnosis in all types of atrial communications; however, real-time three-dimensional reconstruction provides additional value to the surgeon and interventionist for better understanding of spatial intracardiac morphology.

scholarly journals Three dimensional reconstruction of cross sectional intracoronary ultrasound: clinical or research tool?

Heart ◽  
1995 ◽  
Vol 73 (5 Suppl 2) ◽  
pp. 26-32 ◽  
Author(s):  
C. Di Mario ◽  
C. Von Birgelen ◽  
F. Prati ◽  
B. Soni ◽  
W. Li ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Research Tool ◽  
Three Dimensional Reconstruction ◽  
Cross Sectional ◽  
Intracoronary Ultrasound ◽  
Dimensional Reconstruction

Views of Ribosome Tetramers and the Localization of Ribosomal Subunits

1982 ◽  
Vol 40 ◽  
pp. 160-161
Author(s):  
M. K. Lamvik ◽  
E. Zeltler
Keyword(s):  
Chick Embryo ◽  
Three Dimensional ◽  
Reference Image ◽  
Three Dimensional Reconstruction ◽  
Ribosomal Subunits ◽  
Ribosome Structure ◽  
Left Handed ◽  
Dimensional Reconstruction ◽  
Fixed Orientation ◽  
Substrate Film

Carey suggested that chick-embryo ribosome tetramers attach to the substrate film preferentially in one of the two possible orientations, making them particularly appropriate for use in the three-dimensional reconstruction of ribosome structure. We have stored and analyzed tetramer images digitally as described earlier. To test for a fixed orientation, many tetramer Images were compared to a reference image that contained an arbitrarily labelled "right-handed" view. Images that correlated well with the reference were averaged, giving a right-handed result (fig. 1). To search for a left-handed view, the reference image was "turned over” in the computer to artificially create a left-handed image. Repeating the procedure with the new reference gave a result that was mostly symmetric (fig. 2), not left-handed.

Methods for three-dimensional reconstruction of cellular components within a thick section

1986 ◽  
Vol 44 ◽  
pp. 18-21
Author(s):  
J. Frank ◽  
B. F. McEwen ◽  
M. Radermacher ◽  
C. L. Rieder
Keyword(s):  
Tilt Angle ◽  
Tomographic Reconstruction ◽  
3D Structure ◽  
Three Dimensional ◽  
Thick Section ◽  
Three Dimensional Reconstruction ◽  
Axis Ratio ◽  
Dimensional Reconstruction ◽  
Cellular Components

The tomographic reconstruction from multiple projections of cellular components, within a thick section, offers a way of visualizing and quantifying their three-dimensional (3D) structure. However, asymmetric objects require as many views from the widest tilt range as possible; otherwise the reconstruction may be uninterpretable. Even if not for geometric obstructions, the increasing pathway of electrons, as the tilt angle is increased, poses the ultimate upper limitation to the projection range. With the maximum tilt angle being fixed, the only way to improve the faithfulness of the reconstruction is by changing the mode of the tilting from single-axis to conical; a point within the object projected with a tilt angle of 60° and a full 360° azimuthal range is then reconstructed as a slightly elliptic (axis ratio 1.2 : 1) sphere.

Three-Dimensional Reconstruction of Native Androctonus Australis Hemocyanin

1990 ◽  
Vol 48 (1) ◽  
pp. 452-453
Author(s):  
Nicolas Boisset ◽  
Jean-Christophe Taveau ◽  
Jean Lamy ◽  
Terence Wagenknecht ◽  
Michael Radermacher ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solid Body ◽  
Body Surface ◽  
Three Dimensional ◽  
Staining Technique ◽  
Three Dimensional Reconstruction ◽  
Dimensional Reconstruction ◽  
View Reconstruction ◽  
Surface Representations ◽  
Top View

Hemocyanin, the respiratory pigment of the scorpion Androctonus australis is composed of 24 kidney shaped subunits. A model of architecture supported by many indirect arguments has been deduced from electron microscopy (EM) and immuno-EM. To ascertain, the disposition of the subunits within the oligomer, the 24mer was submitted to three-dimensional reconstruction by the method of single-exposure random-conical tilt series.A sample of native hemocyanin, prepared with the double layer negative staining technique, was observed by transmisson electron microscopy under low-dose conditions. Six 3D-reconstructions were carried out indenpendently from top, side and 45°views. The results are composed of solid-body surface representations, and slices extracted from the reconstruction volume.The main two characters of the molecule previously reported by Van Heel and Frank, were constantly found in the solid-body surface representations. These features are the presence of two different faces called flip and flop and a rocking of the molecule around an axis passing through diagonnally opposed hexamers. Furthermore, in the solid-body surface of the top view reconstruction, the positions and orientations of the bridges connecting the half molecules were found in excellent agreement with those predicted by the model.

Three-Dimensional Reconstruction of Two Forms of the Chaperonin GRO EL

1990 ◽  
Vol 48 (1) ◽  
pp. 258-259
Author(s):  
J.L. Carrascosa ◽  
G. Abella ◽  
S. Marco ◽  
M. Muyal ◽  
J.M. Carazo
Keyword(s):  
Three Dimensional ◽  
The Other ◽  
Two Dimensional ◽  
Series Method ◽  
Three Dimensional Reconstruction ◽  
Structural Components ◽  
E Coli ◽  
Dimensional Reconstruction ◽  
Morphogenetic Factors ◽  
Tilt Series

Chaperonins are a class of proteins characterized by their role as morphogenetic factors. They trantsiently interact with the structural components of certain biological aggregates (viruses, enzymes etc), promoting their correct folding, assembly and, eventually transport. The groEL factor from E. coli is a conspicuous member of the chaperonins, as it promotes the assembly and morphogenesis of bacterial oligomers and/viral structures.We have studied groEL-like factors from two different bacteria:E. coli and B.subtilis. These factors share common morphological features , showing two different views: one is 6-fold, while the other shows 7 morphological units. There is also a correlation between the presence of a dominant 6-fold view and the fact of both bacteria been grown at low temperature (32°C), while the 7-fold is the main view at higher temperatures (42°C). As the two-dimensional projections of groEL were difficult to interprete, we studied their three-dimensional reconstruction by the random conical tilt series method from negatively stained particles.

247: Three Dimensional Reconstruction of Nervature in Prostate: Confirming Cancer Related Axonogenesis

2006 ◽  
Vol 175 (4S) ◽  
pp. 82-82
Author(s):  
Gustavo Ayala ◽  
Rile Li ◽  
Hong Oai ◽  
Mohammad Sayeeddudin ◽  
Timothy C. Thompson ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Three Dimensional Reconstruction ◽  
Dimensional Reconstruction
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