Three-Dimensional Evaluation of Breast Augmentation and the Influence of Anatomic and Round Implants on Operative Breast Shape Changes

2012 ◽  
Vol 36 (4) ◽  
pp. 879-887 ◽  
Author(s):  
Laszlo Kovacs ◽  
Maximilian Eder ◽  
Alexander Zimmermann ◽  
Daniel Müller ◽  
Tibor Schuster ◽  
...  
2011 ◽  
Vol 8 (62) ◽  
pp. 1274-1280 ◽  
Author(s):  
Myfanwy E. Evans ◽  
Stephen T. Hyde

A novel technique to generate three-dimensional Euclidean weavings, composed of close-packed, periodic arrays of one-dimensional fibres, is described. Some of these weavings are shown to dilate by simple shape changes of the constituent fibres (such as fibre straightening). The free volume within a chiral cubic example of a dilatant weaving, the ideal conformation of the G 129 weaving related to the Σ + rod packing, expands more than fivefold on filament straightening. This remarkable three-dimensional weaving, therefore, allows an unprecedented variation of packing density without loss of structural rigidity and is an attractive design target for materials. We propose that the G 129 weaving (ideal Σ + weaving) is formed by keratin fibres in the outermost layer of mammalian skin, probably templated by a folded membrane.


2018 ◽  
Vol 63 (2) ◽  
pp. 134-139 ◽  
Author(s):  
A. de Runz ◽  
D. Boccara ◽  
N. Bertheuil ◽  
F. Claudot ◽  
M. Brix ◽  
...  

2013 ◽  
Vol 104 (2) ◽  
pp. 202a
Author(s):  
Vikas Trivedi ◽  
Thai V. Truong ◽  
Le A. Trinh ◽  
Daniel B. Holland ◽  
Michael Liebling ◽  
...  

Author(s):  
Lauren E Hutchinson ◽  
Andrea D Castaldo ◽  
Cedar H Malone ◽  
Nicole Z Sommer ◽  
Ashley N Amalfi

Abstract Background Traditional methods of breast implant size selection provide limited ability to demonstrate postoperative outcomes. Three-dimensional imaging provides an opportunity for improved patient evaluation, surgical planning, and evaluation of postoperative breast appearance. Objectives We hypothesized that preoperative 3D imaging for patients undergoing breast augmentation would improve patient satisfaction and understanding of expected surgical outcomes. Methods A retrospective review of patients undergoing breast augmentation by a single surgeon over a 3.5-year period was performed. Patients presenting after the VECTRA was purchased had preoperative 3D imaging, while patients presenting before this did not. Eligible patients received a BREAST-Q questionnaire designed for postoperative evaluation of breast augmentation. They also received a second survey that evaluated expected versus actual breast outcomes. Results 120 surveys were mailed and 61 patients (50.8%) returned the survey. The 3D imaged group had improved BREAST-Q scores regarding satisfaction with outcome, surgeon, and physical well-being compared to the group that did not. The imaged group also had higher size, shape, and overall breast correlation scores, confidence in implant size selection scores, and communication with surgeon scores. The differences between the two groups were not statistically significant. Conclusions Three-dimensional imaging is a valuable tool in breast surgery. Although our study showed improvement in patient satisfaction and predicted outcome scores in the 3D imaged group, our results were not statistically significant. With the majority of patients reporting they would choose 3D imaging, it appears to instill confidence in patients regarding both surgeon and implant selection.


Development ◽  
1993 ◽  
Vol 118 (3) ◽  
pp. 1013-1023 ◽  
Author(s):  
D. A. Clausi ◽  
G. W. Brodland

Current theories about the forces that drive neurulation shape changes are evaluated using computer simulations. Custom, three-dimensional, finite element-based computer software is used. The software draws on current engineering concepts and makes it possible to construct a ‘virtual’ embryo with any user-specified mechanical properties. To test a specific hypothesis about the forces that drive neurulation, the whole virtual embryo or any selected part of it is ascribed with the force generators specified in the hypothesis. The shape changes that are produced by these forces are then observed and compared with experimental data. The simulations demonstrate that, when uniform, isotropic circumferential microfilament bundle (CMB) constriction and cephalocaudal (axial) elongation act together on a circular virtual neural plate, it becomes keyhole shaped. When these forces act on a spherical (amphibian) embryo, dorsal surface flattening occurs. Simulations of transverse sections further show that CMB constriction, acting with or without axial elongation, can produce numerous salient transverse features of neurulation. These features include the sequential formation of distinct neural ridges, narrowing and thickening of the neural plate, skewing just medial to the ridges, ‘hinge’ formation and neural tube closure. No region-specific ‘programs’ or non-mechanical cell-cell communications are used. The increase in complexity results entirely from mechanical interactions. The transverse simulations show how changes to the driving forces would affect the patterns of shape change produced. Hypotheses regarding force generation by microtubules, intercellular adhesions and forces extrinsic to the neural plate are also evaluated. The simulations show that these force-generating mechanisms do not, by themselves, produce shape changes that are consistent with normal development. The simulations support the concept of cooperation of forces and suggest that neurulation is robust because redundant force generating mechanisms exist.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Keyvan Jaferzadeh ◽  
MinWoo Sim ◽  
NamGon Kim ◽  
InKyu Moon

Abstract The optimal functionality of red blood cells is closely associated with the surrounding environment. This study was undertaken to analyze the changes in membrane profile, mean corpuscular hemoglobin (MCH), and cell membrane fluctuations (CMF) of healthy red blood cells (RBC) at varying temperatures. The temperature was elevated from 17 °C to 41 °C within a duration of less than one hour, and the holograms were recorded by an off-axis configuration. After hologram reconstruction, we extracted single RBCs and evaluated their morphologically related features (projected surface area and sphericity coefficient), MCH, and CMF. We observed that elevating the temperature results in changes in the three-dimensional (3D) profile. Since CMF amplitude is highly correlated to the bending curvature of RBC membrane, temperature-induced shape changes can alter CMF’s map and amplitude; mainly larger fluctuations appear on dimple area at a higher temperature. Regardless of the shape changes, no alterations in MCH were seen with temperature variation.


2011 ◽  
Vol 331 ◽  
pp. 101-104
Author(s):  
Su Zhen Liang

The pattern design of brassieres is the core technology for the design and manufacture of brassieres, while the female breast shape and part dimensions are the foundations for pattern design of brassieres. Based upon 3D body scanning, this paper studied the relationship between the breast root shape and the steel ring by considering the features of the pattern design of the brassiere. It concludes that the breast root girth is a complicated three-dimensional curve; it’s inappropriate for the neighboring size’s brassieres to adopt the steel ring with the same specification; the material design of the steel ring should be moderate. The purpose is to provide human body basis for pattern design of brassieres and achieve more standard and scientific pattern design of the brassiere by the underwear enterprises.


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