scholarly journals Three-dimensional Volumetric Analysis of 3 Fat-Processing Techniques for Facial Fat Grafting

2018 ◽  
Vol 20 (3) ◽  
pp. 222-229 ◽  
Author(s):  
Rongwei Wu ◽  
Xiaonan Yang ◽  
Xiaolei Jin ◽  
Haibin Lu ◽  
Zhenhua Jia ◽  
...  
2020 ◽  
Vol 34 (01) ◽  
pp. 011-016 ◽  
Author(s):  
Erica Y. Xue ◽  
Luciana Narvaez ◽  
Carrie K. Chu ◽  
Summer E. Hanson

AbstractAutologous fat grafting is an aesthetic and reconstructive procedure in which an individual's own fat is harvested and injected into the soft tissues to correct contour and other abnormalities. Fat graft is considered the ideal soft tissue filler for its biocompatibility, lack of immunogenicity, and availability. The entire procedure of harvesting, processing, and transfer of fat graft affects fat graft take and effectiveness of fat grafting. This article will focus on the most common methods of fat graft processing, including centrifugation, cotton gauze rolling, sedimentation, and filtration/washing. The fragility of the harvested adipocytes makes the technique of fat graft processing of utmost importance, as blood and other unnecessary cellular fragments are removed. Each fat graft processing method has its own merits and shortcomings; however, due to a lack of well-defined prospective studies, there is no evidence to support one processing method as superior to another.


Author(s):  
B.V.V. Prasad ◽  
E. Marietta ◽  
J.W. Burns ◽  
M.K. Estes ◽  
W. Chiu

Rotaviruses are spherical, double-shelled particles. They have been identified as a major cause of infantile gastroenteritis worldwide. In our earlier studies we determined the three-dimensional structures of double-and single-shelled simian rotavirus embedded in vitreous ice using electron cryomicroscopy and image processing techniques to a resolution of 40Å. A distinctive feature of the rotavirus structure is the presence of 132 large channels spanning across both the shells at all 5- and 6-coordinated positions of a T=13ℓ icosahedral lattice. The outer shell has 60 spikes emanating from its relatively smooth surface. The inner shell, in contrast, exhibits a bristly surface made of 260 morphological units at all local and strict 3-fold axes (Fig.l).The outer shell of rotavirus is made up of two proteins, VP4 and VP7. VP7, a glycoprotein and a neutralization antigen, is the major component. VP4 has been implicated in several important functions such as cell penetration, hemagglutination, neutralization and virulence. From our earlier studies we had proposed that the spikes correspond to VP4 and the rest of the surface is composed of VP7. Our recent structural studies, using the same techniques, with monoclonal antibodies specific to VP4 have established that surface spikes are made up of VP4.


2006 ◽  
Vol 163 (7) ◽  
pp. 1252-1263 ◽  
Author(s):  
M. Mehmet Haznedar ◽  
Monte S. Buchsbaum ◽  
Erin A. Hazlett ◽  
Elizabeth M. LiCalzi ◽  
Charles Cartwright ◽  
...  

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Jamyson Oliveira Santos ◽  
Brunna da Silva Firmino ◽  
Matheus Santos Carvalho ◽  
Jean de Pinho Mendes ◽  
Lucas Novaes Teixeira ◽  
...  

Imaging examinations play an important role in the diagnosis of sialolithiasis, whose symptoms are initially confounded with other diseases. The objective of the present case report is to highlight imaging and processing techniques as well as image analysis for the preoperative assessment and planning of surgical interventions and adequate treatment of massive sialoliths. A 35-year-old male patient presented complaining of pain in the submandibular region and purulent secretions from a lingual caruncle with slightly increased volume in the region. Imaging examinations were ordered as follows: cone beam computed tomography, ultrasonography, and three-dimensional reconstruction, including clinical evaluation. A final diagnosis of sialolithiasis was established. Surgery was indicated and carried out by using a lateral transcervical approach for complete resection of the gland, which was based on the calculation of the total volume of the sialolith, thus increasing the surgery’s success.


2011 ◽  
pp. 130-174
Author(s):  
Burak Ozer ◽  
Tiehan Lv ◽  
Wayne Wolf

This chapter focuses on real-time processing techniques for the reconstruction of visual information from multiple views and its analysis for human detection and gesture and activity recognition. It presents a review of the main components of three-dimensional visual processing techniques and visual analysis of multiple cameras, i.e., projection of three-dimensional models onto two-dimensional images and three-dimensional visual reconstruction from multiple images. It discusses real-time aspects of these techniques and shows how these aspects affect the software and hardware architectures. Furthermore, the authors present their multiple-camera system to investigate the relationship between the activity recognition algorithms and the architectures required to perform these tasks in real time. The chapter describes the proposed activity recognition method that consists of a distributed algorithm and a data fusion scheme for two and three-dimensional visual analysis, respectively. The authors analyze the available data independencies for this algorithm and discuss the potential architectures to exploit the parallelism resulting from these independencies.


ESC CardioMed ◽  
2018 ◽  
pp. 88-92
Author(s):  
Luigi Badano ◽  
Denisa Muraru

The left and right atria are dynamic structures that play an integral role in cardiac performance by modulating the respective ventricular filling. This function is accomplished by their role as a reservoir for venous return during ventricular systole, a conduit for venous return during early ventricular diastole, and a booster pump for ventricular filling during late diastole. Recent advances in cardiac imaging allow the accurate assessment of the geometry and phasic functions of both atria. Two- and three-dimensional echocardiography enables a volumetric analysis of atrial function, and both Doppler tissue imaging and speckle-tracking echocardiography allow the assessment of the deformation of atrial myocardium.


2019 ◽  
Vol 43 (4) ◽  
pp. 231-238 ◽  
Author(s):  
Hyeonjong Lee ◽  
Yong Kwon Chae ◽  
Hyo-Seol Lee ◽  
Sung Chul Choi ◽  
Ok Hyung Nam

Objectives: This study was designed to compare the surface morphologies and volumes of posterior prefabricated zirconia crowns and posterior stainless steel crowns (SSCs) using digitalized three-dimensional (3D) reconstructed images. Study design: We tested prefabricated zirconia crowns (NuSmile ZR; Orthodontic Technologies, Houston, TX, USA) and SSCs (Kids Crown; Shinhung, Seoul, Korea) used to restore left maxillary and mandibular molars. A Rainbow scanner (Dentium, Seoul, Korea) was used to digitise the inner and outer surface morphologies of all crowns. The data were superimposed and evaluated using 3D software. The differences between the outer and inner surfaces and inner volume were measured. Results: The differences between the two types of crowns differed by tooth surface. At the occlusal surface, the differences were greater at the cusp tip than the fossa. At the axial level, the differences decreased toward the gingival margins. Also, relative volumetric ratios varied. Conclusions: Tooth preparation prior to placement of prefabricated zirconia crowns requires special consideration. Greater amounts of tooth reduction are necessary for posterior zirconia crowns than for SSCs. The occlusal surface requires more tooth reduction than the axial surface and the gingival margin.


2019 ◽  
Vol 39 (1) ◽  
pp. 75-94 ◽  
Author(s):  
Hannah Pierson ◽  
Haojun Yang ◽  
Svetlana Lutsenko

Many metals have biological functions and play important roles in human health. Copper (Cu) is an essential metal that supports normal cellular physiology. Significant research efforts have focused on identifying the molecules and pathways involved in dietary Cu uptake in the digestive tract. The lack of an adequate in vitro model for assessing Cu transport processes in the gut has led to contradictory data and gaps in our understanding of the mechanisms involved in dietary Cu acquisition. The recent development of organoid technology has provided a tractable model system for assessing the detailed mechanistic processes involved in Cu utilization and transport in the context of nutrition. Enteroid (intestinal epithelial organoid)-based studies have identified new links between intestinal Cu metabolism and dietary fat processing. Evidence for a metabolic coupling between the dietary uptake of Cu and uptake of fat (which were previously thought to be independent) is a new and exciting finding that highlights the utility of these three-dimensional primary culture systems. This review has three goals: ( a) to critically discuss the roles of key Cu transport enzymes in dietary Cu uptake; ( b) to assess the use, utility, and limitations of organoid technology in research into nutritional Cu transport and Cu-based diseases; and ( c) to highlight emerging connections between nutritional Cu homeostasis and fat metabolism.


2019 ◽  
Vol 144 (3) ◽  
pp. 463e-470e ◽  
Author(s):  
Edward J. Ruane ◽  
Danielle M. Minteer ◽  
Aaron J. Wyse ◽  
Beth R. Gusenoff ◽  
Jeffrey A. Gusenoff

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