Subcutaneous Face and Neck Lift: A Traditional Method With Definite Effects Among Asians

2021 ◽  
Author(s):  
Guanhuier Wang ◽  
Runlei Zhao ◽  
Ran Bi ◽  
Hongbin Xie
Keyword(s):  
3D Imaging ◽  
Imaging System ◽  
Image Data ◽  
3D Measurement ◽  
Volume Changes ◽  
Middle Temporal ◽  
Neck Lift ◽  
Facial Information ◽  
Patient Reported ◽  
Face And Neck Lift

Abstract Background The mainstream face lifts in western countries always involve the SMAS treatment. Meanwhile, subcutaneous face and neck lift is wildly applied among Asians. Objectives To evaluate outcomes of subcutaneous face and neck lift, including patient-reported and 3D measurement outcomes, and report on details of surgical procedures. Methods Patients who received a subcutaneous face and neck lift from January 2017 to June 2019 were asked to complete FACE-Q scales, and facial information was collected by the Vectra 3D imaging system preoperatively and postoperatively. Volume changes in midface and possible displacement of facial landmarks were measured. The range of dissection and the amount of skin removed were recorded intraoperatively. Results In total, 119 patients (median age 46 years, interquartile range 40 - 53 years) received a subcutaneous face and neck lift. Among them, 88 patients completed pre- and postoperative FACE-Q scales. Patients’ satisfaction with facial subunits improved and wrinkles were significantly relieved (p＜0.001). Nineteen patients (38 midface sides) completed 3D image data collection. Postoperatively, zygomatic volume was increased, while nasolabial and lateral cheek volumes were decreased, with the volume change of 2.2 ± 1.3 mL. Mouth, nose, and eye displacements were negligible postoperatively. The widths of skin removed at the middle temporal, front of the sideburns, upper helix, earlobe, and retro-auricular were 13.8±1.9 mm, 19.6±3.1 mm, 27.6±3.9 mm, 16.4±3.9 mm, and 32.2±4.0 mm, respectively. Conclusions Our subcutaneous face and neck lift was effective in relieving nasolabial sagging, improving wrinkles, and achieving facial rejuvenation.

Holographic surface imaging for archaeological applications

1970 ◽  
Vol 80 (1) ◽  
Author(s):  
Susanne Frey ◽  
Heather Gill-Robinson ◽  
Andrea Thelen ◽  
S. Hirsch ◽  
Natalie Ladrière ◽  
...  
Keyword(s):  
3D Imaging ◽  
Imaging System ◽  
Numerical Data ◽  
Single Pulse ◽  
Short Exposure ◽  
3D Measurement ◽  
Short Exposure Time ◽  
New Approach ◽  
3D Computer Model ◽  
Bog Body

A new approach to precise 3D topometry for medical applications has been applied for the documentation of cultural heritage. The 3D imaging system works with pulsed holography. With a single pulse of a Nd:YLF laser, a surface is recorded with a holographic camera on photosensitive material. The short exposure time of 35 ns allows for high resolution 3D measurement without movement artefacts. The pulsed technique is robust against vibrations and the latest generation of cameras is portable and works at daylight. The holograms are digitized in a second selfcontained unit where the projections of the optically reconstructed real image of the hologram are recorded. Numerical data processing leads to a 3D computer model of the surface with intrinsic gray scale texture. In addition, full-scale daylight copies of the master hologram give an impressive detailed 3D view of the recorded object. The technique is used for 3D imaging of the Windeby Child bog body.

scholarly journals Three-dimensional phase-contrast X-ray microtomography with scanning–imaging X-ray microscope optics

2013 ◽  
Vol 20 (5) ◽  
pp. 793-800 ◽  
Author(s):  
Akihisa Takeuchi ◽  
Kentaro Uesugi ◽  
Yoshio Suzuki
Keyword(s):  
Phase Contrast ◽  
3D Imaging ◽  
Imaging System ◽  
Three Dimensional ◽  
Image Data ◽  
Pixel Detector ◽  
Scanning Microscope ◽  
X Ray ◽  
Scanning Imaging ◽  
Focused Beam

A three-dimensional (3D) X-ray tomographic micro-imaging system has been developed. The optical system is based on a scanning–imaging X-ray microscope (SIXM) optics, which is a hybrid system consisting of a scanning microscope optics with a one-dimensional (1D) focusing (line-focusing) device and an imaging microscope optics with a 1D objective. In the SIXM system, each 1D dataset of a two-dimensional (2D) image is recorded independently. An object is illuminated with a line-focused beam. Positional information of the region illuminated by the line-focused beam is recorded with the 1D imaging microscope optics as line-profile data. By scanning the object with the line focus, 2D image data are obtained. In the same manner as for a scanning microscope optics with a multi-pixel detector, imaging modes such as phase contrast and absorption contrast can be arbitrarily configured after the image data acquisition. By combining a tomographic scan method and the SIXM system, quantitative 3D imaging is performed. Results of a feasibility study of the SIXM for 3D imaging are shown.

scholarly journals Enhanced Contactless Vital Sign Estimation from Real-Time Multimodal 3D Image Data

2020 ◽  
Vol 6 (11) ◽  
pp. 123
Author(s):  
Chen Zhang ◽  
Ingo Gebhart ◽  
Peter Kühmstedt ◽  
Maik Rosenberger ◽  
Gunther Notni
Keyword(s):  
Real Time ◽  
3D Imaging ◽  
Imaging System ◽  
Vital Signs ◽  
Image Data ◽  
Motion Artifacts ◽  
Video Data ◽  
Ambient Light ◽  
3D Image ◽  
Controlled Illumination

The contactless estimation of vital signs using conventional color cameras and ambient light can be affected by motion artifacts and changes in ambient light. On both these problems, a multimodal 3D imaging system with an irritation-free controlled illumination was developed in this work. In this system, real-time 3D imaging was combined with multispectral and thermal imaging. Based on 3D image data, an efficient method was developed for the compensation of head motions, and novel approaches based on the use of 3D regions of interest were proposed for the estimation of various vital signs from multispectral and thermal video data. The developed imaging system and algorithms were demonstrated with test subjects, delivering a proof-of-concept.

Facelift Part II: Surgical Techniques and Complications

2021 ◽  
Author(s):  
Ahmed M Hashem ◽  
Rafael A Couto ◽  
Chris Surek ◽  
Marco Swanson ◽  
James E Zins
Keyword(s):  
Plastic Surgery ◽  
Surgical Techniques ◽  
Aesthetic Surgery ◽  
Program Directors ◽  
Recent Survey ◽  
Critical Reading ◽  
Neck Lift ◽  
Macs Lift ◽  
Face And Neck Lift

Abstract Although previous publications have reviewed face and neck-lift anatomy and technique from different perspectives, seldom were the most-relevant anatomical details and widely practiced techniques comprehensively summarized in a single work. As a result, the beginner is left with a plethora of varied publications that require sorting, re-arrangement, and critical reading. A recent survey of US plastic surgery residents and program directors disclosed less facility with facelift surgery when compared to aesthetic surgery of the breast and trunk. To this end four of the widely practiced facelift techniques (ie, MACS-lift, lateral-SMASectomy, extended-SMAS, and composite rhytidectomy) are described in an easy review format. The highlights of each are formatted followed by a summary of complications. Finally, the merits and limitations of these individual techniques are thoroughly compared and discussed.

Clinical analysis and efficacy of bimanual surgical treatment of retinal detachment in severe forms of proliferative diabetic retinopathy with preoperative preparation with anti-VEGF drugs in combination with the use of the Ngenuity ALCON 3D imaging system

2021 ◽  
pp. 195-198
Author(s):  
D.V. Chernykh ◽  
Keyword(s):  
Visual Acuity ◽  
Diabetic Retinopathy ◽  
Surgical Treatment ◽  
Retinal Detachment ◽  
Postoperative Period ◽  
3D Imaging ◽  
Imaging System ◽  
3D Visualization ◽  
Preoperative Preparation ◽  
Anti Vegf

The purpose of the study was to evaluate the effectiveness of bimanual surgery with anti-VEGF preparation of patients with severe forms of PDR complicated by traction retinal detachment, with intraoperative use of 3D visualization. Material and methods. Operated on 18 patients with a diagnosis of PDR complicated by traction retinal detachment. Of these, there were 7 patients with type 1 diabetes, type 2 diabetes. There were 5 men and 13 women. The average age was 58 + -2 years. All patients underwent a three-port vitrectomy, using an additional light source, with preoperative preparation with anti-VEGF drugs, using bimanual technique and 3D visualization, using air tamponade. Results and its discussion. As a result of the study, it was found that the visual acuity before the treatment was 0.03 [0.01; 0.1], and 4-6 months after the surgical treatment, 0.3 [0.15; 0.5]. The performed statistical analysis made it possible to establish a statistically significant increase in visual acuity 4-6 months after the treatment. (p = 0.001) Achieved complete anatomical retinal fit. With increased visual acuity. There were 5 complications in the postoperative period. Recurrent hemophthalmos was diagnosed in 3 people, which required repeated surgical intervention. In 2 patients in the postoperative period, DMO developed, which required IVI biodegradable dexamethasone implant. Conclusion. Bimanual, surgical treatment of traction retinal detachments, in severe forms of PDLP, with preoperative preparation with anti-VEGF drugs, and the use of the Ngenuity ALCON 3D imaging system, is one of the effective methods of treatment in this group of patients, and is aimed at reducing both intra and postoperative complications. Key words: рroliferative diabetic retinopathy, vitrectomy, 3D imaging, bimanual surgery, anti-VEGF drugs.

scholarly journals Current Applications, Opportunities, and Limitations of AI for 3D Imaging in Dental Research and Practice

2020 ◽  
Vol 17 (12) ◽  
pp. 4424
Author(s):  
Kuofeng Hung ◽  
Andy Wai Kan Yeung ◽  
Ray Tanaka ◽  
Michael M. Bornstein
Keyword(s):  
Treatment Planning ◽  
3D Imaging ◽  
Imaging Techniques ◽  
Current Trend ◽  
Three Dimensional ◽  
Image Data ◽  
Anatomical Landmarks ◽  
Automated Diagnosis ◽  
Dental Practitioners ◽  
Facial Scanning

The increasing use of three-dimensional (3D) imaging techniques in dental medicine has boosted the development and use of artificial intelligence (AI) systems for various clinical problems. Cone beam computed tomography (CBCT) and intraoral/facial scans are potential sources of image data to develop 3D image-based AI systems for automated diagnosis, treatment planning, and prediction of treatment outcome. This review focuses on current developments and performance of AI for 3D imaging in dentomaxillofacial radiology (DMFR) as well as intraoral and facial scanning. In DMFR, machine learning-based algorithms proposed in the literature focus on three main applications, including automated diagnosis of dental and maxillofacial diseases, localization of anatomical landmarks for orthodontic and orthognathic treatment planning, and general improvement of image quality. Automatic recognition of teeth and diagnosis of facial deformations using AI systems based on intraoral and facial scanning will very likely be a field of increased interest in the future. The review is aimed at providing dental practitioners and interested colleagues in healthcare with a comprehensive understanding of the current trend of AI developments in the field of 3D imaging in dental medicine.

scholarly journals SYSTEMATIC CALIBRATION FOR A BACKPACKED SPHERICAL PHOTOGRAMMETRY IMAGING SYSTEM

2016 ◽  
Vol XLI-B1 ◽  
pp. 695-702 ◽  
Author(s):  
J. Y. Rau ◽  
B. W. Su ◽  
K. W. Hsiao ◽  
J. P. Jhan
Keyword(s):  
Imaging System ◽  
Relative Orientation ◽  
Lens Distortion ◽  
Stereo Pair ◽  
3D Measurement ◽  
Spherical Image ◽  
Mobile Mapping ◽  
Mobile Mapping System ◽  
Spherical Images ◽  
Spherical Camera

A spherical camera can observe the environment for almost 720 degrees’ field of view in one shoot, which is useful for augmented reality, environment documentation, or mobile mapping applications. This paper aims to develop a spherical photogrammetry imaging system for the purpose of 3D measurement through a backpacked mobile mapping system (MMS). The used equipment contains a Ladybug-5 spherical camera, a tactical grade positioning and orientation system (POS), i.e. SPAN-CPT, and an odometer, etc. This research aims to directly apply photogrammetric space intersection technique for 3D mapping from a spherical image stereo-pair. For this purpose, several systematic calibration procedures are required, including lens distortion calibration, relative orientation calibration, boresight calibration for direct georeferencing, and spherical image calibration. The lens distortion is serious on the ladybug-5 camera’s original 6 images. Meanwhile, for spherical image mosaicking from these original 6 images, we propose the use of their relative orientation and correct their lens distortion at the same time. However, the constructed spherical image still contains systematic error, which will reduce the 3D measurement accuracy. Later for direct georeferencing purpose, we need to establish a ground control field for boresight/lever-arm calibration. Then, we can apply the calibrated parameters to obtain the exterior orientation parameters (EOPs) of all spherical images. In the end, the 3D positioning accuracy after space intersection will be evaluated, including EOPs obtained by structure from motion method.

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