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https://www.readbyqxmd.com/read/27913880/forensic-3d-documentation-of-skin-injuries
#1
Chiara Villa
An accurate and precise documentation of injuries is fundamental in a forensic pathological context. Photographs and manual measurements are taken of all injuries during autopsies, but ordinary photography projects a 3D wound on a 2D space. Using technologies such as photogrammetry, it is possible to create 3D detailed, to-scale, true-color documentation of skin injuries from 2D pictures. A comparison between the measurements of 165 lesions taken during autopsies and on photogrammetrically processed pictures was performed...
December 2, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27904809/a-revision-of-tetrapod-footprints-from-the-late-carboniferous-of-the-west-midlands-uk
#2
Luke E Meade, Andrew S Jones, Richard J Butler
A series of sandstone slabs from Hamstead, Birmingham (West Midlands, UK), preserve an assemblage of tetrapod trackways and individual tracks from the Enville Member of the Salop Formation (late Carboniferous: late Moscovian-Kasimovian). This material has received limited previous study, despite being one of the few British sites to preserve Carboniferous tetrapod footprints. Here, we restudy and revise the taxonomy of this material, and document it using 3D models produced using photogrammetry. The assemblage is dominated by large tracks assigned to Limnopus isp...
2016: PeerJ
https://www.readbyqxmd.com/read/27890100/sex-and-ancestry-assessment-of-brazilian-crania-using-semi-automatic-mesh-processing-tools
#3
Mikoláš Jurda, Petra Urbanová
The present paper aims to test performances of semi-automatic tools for mesh-to-mesh processing while assessing sex and ancestry in documented human crania. The studied sample of 80 human crania, which originated in two documented Brazilian collections (São Paulo, Brazil) was digitized using photogrammetry and laser scanning. 3D cranial morphology was quantified by computing inter-mesh dissimilarity measures using in-house freeware FIDENTIS Analyst (www.fidentis.com). Numerical outputs were further processed using Discriminant Function Analysis and Canonical Variant Analysis in order to classify models into sex and ancestry groups...
November 2016: Legal Medicine
https://www.readbyqxmd.com/read/27876481/physical-effects-of-unilateral-mastectomy-on-spine-deformity
#4
Savaş Serel, Zeynep Yasavur Tuzlalı, Zehra Akkaya, Çağlar Uzun, Burak Kaya, Sancar Bayar
OBJECTIVE: Mastectomy is known to effect body posture after a change in the center of gravity of women due to a missing breast. Although previous studies on short-term postural changes in mastectomy patients using photogrammetry or Moiré topography suggested ipsilateral inclination of the trunk, our clinical observations during breast reconstruction surgeries indicated a contralateral shoulder elevation in women with unilateral mastectomy. Because the change in body posture can affect spinal alignment, we aimed to evaluate the long-term physical effects of unilateral mastectomy on spine deformity by radiographic examination...
October 26, 2016: Clinical Breast Cancer
https://www.readbyqxmd.com/read/27865479/evaluation-of-knee-functional-calibration-with-and-without-the-effect-of-soft-tissue-artefact
#5
Morgan Sangeux, Arnaud Barré, Kamiar Aminian
Functional calibration methods were devised to improve repeatability and accuracy of the knee flexion-extension axis, which is used to define the medio-lateral axis of the femur coordinate system in gait analysis. Repeatability of functional calibration methods has been studied extensively in healthy individuals, but not accuracy in the absence of a benchmark knee axis. We captured bi-plane fluoroscopy data of the knee joint in 17 subjects with unilateral total knee arthroplasty during treadmill walking. The prosthesis provided a benchmark knee axis to evaluate the functional calibration methods...
November 2, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27842938/effects-of-a-resistance-and-stretching-training-program-on-forward-head-and-protracted-shoulder-posture-in-adolescents
#6
Rodrigo Miguel Ruivo, Pedro Pezarat-Correia, Ana Isabel Carita
OBJECTIVE: The purpose of this study was to evaluate the effects of a 16-week resistance and stretching training program applied in physical education (PE) classes on forward head posture and protracted shoulder posture in Portuguese adolescents. METHODS: This prospective, randomized, controlled study was conducted in 2 secondary schools. One hundred and thirty adolescents (aged 15-17 years) with forward head and protracted shoulder posture were randomly assigned to a control or experimental group...
November 11, 2016: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/27828057/multicamera-system-extrinsic-stability-analysis-and-large-span-truss-string-structure-displacement-measurement
#7
Cong Liu, Shuai Dong, Mohammed Mokhtar, Xiaoyuan He, Jinyu Lu, Xiaolong Wu
A novel technique for measuring the displacements of large-span truss string structures that employs multicamera systems is proposed. The coordinates of the stereo-vision systems are unified in a single global coordinate system by employing 3D data reconstructed using close-range photogrammetry. To estimate the camera's attitude motions during an experiment, an instantaneous extrinsic rectification algorithm was developed. Experiments in which a camera was rotated and translated were conducted to verify the accuracy and precision of the developed algorithm...
October 10, 2016: Applied Optics
https://www.readbyqxmd.com/read/27828034/accurate-feature-detection-for-out-of-focus-camera-calibration
#8
Yuwei Wang, Xiangcheng Chen, Jiayuan Tao, Keyi Wang, Mengchao Ma
For conventional camera calibration methods, well-focused images are necessary to detect features accurately. However, this requirement causes practical inconveniences to image acquisition for long- and short-distance photogrammetry. In this study, three active phase-shift circular grating (PCG) arrays are used as calibration patterns. The PCGs' centers are regarded as feature points that can be accurately extracted by ellipse fitting of 2π-phase points even though patterns are substantially blurred. In the experiments, Gaussian filters are utilized to blur pattern images, and different standard deviations are set for different fuzzy degrees...
October 1, 2016: Applied Optics
https://www.readbyqxmd.com/read/27827385/role-of-the-interface-between-distributed-fibre-optic-strain-sensor-and-soil-in-ground-deformation-measurement
#9
Cheng-Cheng Zhang, Hong-Hu Zhu, Bin Shi
Recently the distributed fibre optic strain sensing (DFOSS) technique has been applied to monitor deformations of various earth structures. However, the reliability of soil deformation measurements remains unclear. Here we present an integrated DFOSS- and photogrammetry-based test study on the deformation behaviour of a soil foundation model to highlight the role of strain sensing fibre-soil interface in DFOSS-based geotechnical monitoring. Then we investigate how the fibre-soil interfacial behaviour is influenced by environmental changes, and how the strain distribution along the fibre evolves during progressive interface failure...
November 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27816730/application-of-a-computer-assisted-navigation-system-cans-in-the-delayed-treatment-of-zygomatic-fractures-a-randomized-controlled-trial
#10
Xi Gong, Yang He, Jingang An, Yao Yang, Xiuling Huang, Meng Liu, Yangyang Zhao, Yi Zhang
PURPOSE: The delayed treatment of zygomatic complex (ZMC) fracture presents a difficult challenge to surgeons. The aim of this study was to compare the treatment effects of delayed surgery of ZMC fractures with and without a computer-assisted navigation system (CANS). MATERIALS AND METHODS: In this observer-blinded single-site randomized clinical trial, patients with unilateral ZMC fracture were included and randomized 1:1 to delayed treatment with or without CANS...
October 11, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27814864/non-invasive-methods-of-computer-vision-in-the-posture-evaluation-of-adolescent-idiopathic-scoliosis
#11
REVIEW
Rozilene Maria C Aroeira, Estevam B de Las Casas, Antônio Eustáquio M Pertence, Marcelo Greco, João Manuel R S Tavares
PURPOSE: Reviewing techniques for non-invasive postural evaluation of adolescent idiopathic scoliosis (AIS) based on information extraction from images based on computer methods. METHODS: The Scopus, Web of Science, MEDLINE, ScieLo and PubMed databases were used, for the period 2011-2015. RESULTS: 131 articles were found based on keyword of which 15 articles met the established eligibility criteria. Of these, 4 were based on photogrammetry, and 11 based on laser, structured light, ultrasound, and Moiré projection...
October 2016: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/27814856/assessment-of-the-posture-of-adolescents-in-everyday-clinical-practice-intra-rater-and-inter-rater-reliability-and-validity-of-a-posture-index
#12
Oliver Ludwig, Annette Hammes, Jens Kelm, Eduard Schmitt
OBJECTIVES: The assessment of the posture of children and adolescents using photometric methods has a long tradition in paediatrics, manual therapy and physiotherapy. It can be well integrated into the clinical routine and enables objective documentation. One-dimensional parameters such as angle sizes are mostly used in the diagnosis of postural defects in children and adolescents by means of photogrammetry. This study examined the posture index, a complex parameter, which evaluates the alignment of several trunk segments in the sagittal plane and is suitable for use as a screening parameter in everyday clinical practice...
October 2016: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/27758964/defining-patterns-of-sagittal-standing-posture-in-school-aged-girls-and-boys
#13
Fábio Azevedo Araújo, Milton Severo, Nuno Alegrete, Laura D Howe, Raquel Lucas
BACKGROUND: Sagittal postural patterns are associated with back pain in adolescents and adults. However, it is unknown if postural patterns are already observable during childhood. This would confirm childhood as a key period for posture differentiation and thus for chronic pain etiology. OBJECTIVE: We aimed to identify and describe postural patterns in school-aged girls and boys. DESIGN: This was a cross-sectional study. METHODS: Eligible children were evaluated at age 7 in the population-based birth cohort Generation XXI, Portugal...
October 6, 2016: Physical Therapy
https://www.readbyqxmd.com/read/27720276/variation-trends-of-the-postoperative-outcomes-for-unilateral-cleft-lip-patients-by-modified-mohler-and-tennison-randall-cheiloplasties
#14
Liqi Li, Lishu Liao, Yuxiang Zhong, Yuangui Li, Li Xiang, Wanshan Li
PURPOSE: To evaluate postoperative variation trends of unilateral cleft lip by stages, and to analyze influential factors of nasolabial symmetry. MATERIALS AND METHODS: A total of 145 patients with unilateral cleft lip were treated by the modified Mohler or Tennison-Randall technique, and received routine anti-scarring treatment postoperatively. Photogrammetry was applied to respectively measure 5 indices by stages preoperatively, the first week (1 w), the third month (3 m), the sixth month (6 m), and the first year (1 y) postoperatively...
November 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27711027/quantification-of-the-amount-of-dental-material-removed-by-selective-grinding-in-wax-dentures-with-photogrammetric-measurements
#15
Francesco Ravasini, Matteo Fornari, Mauro Bonanini
BACKGROUND: The use of photogrammetry may be a new method to quantify the amount of artificial dental material removed from the surface of each teeth during the grind procedure (SG). SG is necessary in each denture to reach a correct occlusion. It consists in a refine action on the prosthesis teeth's surface using milling machine tools, aimed to remove the interferences (pre-contacts) between upper and lower teeth during chewing. This measure is achieved after a comparison between pre and post-grinding 3D models...
December 2016: Minerva Stomatologica
https://www.readbyqxmd.com/read/27708679/development-of-foraging-skills-in-two-orangutan-populations-needing-to-learn-or-needing-to-grow
#16
Caroline Schuppli, Sofia I F Forss, Ellen J M Meulman, Nicole Zweifel, Kevin C Lee, Evasari Rukmana, Erin R Vogel, Maria A van Noordwijk, Carel P van Schaik
BACKGROUND: Orangutans have one of the slowest-paced life histories of all mammals. Whereas life-history theory suggests that the time to reach adulthood is constrained by the time needed to reach adult body size, the needing-to-learn hypothesis instead suggests that it is limited by the time needed to acquire adult-level skills. To test between these two hypotheses, we compared the development of foraging skills and growth trajectories of immature wild orangutans in two populations: at Tuanan (Pongo pygmaeus wurmbii), Borneo, and Suaq Balimbing (Pongo abelii), Sumatra...
2016: Frontiers in Zoology
https://www.readbyqxmd.com/read/27706220/anthropometric-study-of-three-dimensional-facial-morphology-in-malay-adults
#17
Siti Adibah Othman, Lynnora Patrick Majawit, Wan Nurazreena Wan Hassan, Mang Chek Wey, Roziana Mohd Razi
OBJECTIVES: To establish the three-dimensional (3D) facial soft tissue morphology of adult Malaysian subjects of the Malay ethnic group; and to determine the morphological differences between the genders, using a non-invasive stereo-photogrammetry 3D camera. MATERIAL AND METHODS: One hundred and nine subjects participated in this research, 54 Malay men and 55 Malay women, aged 20-30 years old with healthy BMI and with no adverse skeletal deviation. Twenty-three facial landmarks were identified on 3D facial images captured using a VECTRA M5-360 Head System (Canfield Scientific Inc, USA)...
2016: PloS One
https://www.readbyqxmd.com/read/27700244/active-self-correction-of-spinal-posture-in-pain-free-women-in-response-to-the-command-straighten-your-back
#18
Katarzyna Barczyk-Pawelec, Sipko Tomasz
Evidence is limited regarding the regional changes in spinal posture after self-correction. The aim of the present study was to evaluate whether active self-correction improved standing and sitting spinal posture. Photogrammetry was used to assess regional spinal curvatures and vertical global spine orientation (GSO) in 42 asymptotic women aged 20-24 years. Upper thoracic spine angle and GSO increased in response to self-correction, while the thoracolumbar and lumbosacral angles decreased. Self-correction in the standing position resulted in decreased inclination of the upper thoracic and thoracolumbar spinal angles...
October 4, 2016: Women & Health
https://www.readbyqxmd.com/read/27676462/systematic-review-of-postural-assessment-in-individuals-with-obstructive-respiratory-conditions-measurement-and-clinical-associations
#19
Annemarie L Lee, Karl Zabjek, Roger S Goldstein, Dina Brooks
PURPOSE: Changes in posture in individuals with an obstructive respiratory disease have been reported, but the extent of these deviations and their clinical significance is not well understood. This study aimed to systematically review the literature of the skeletal structural alignment in children and adults with an obstructive respiratory disease, describe the measurement techniques used, and determine the clinical relevance of any alternations. METHODS: Observational cohort or cross-sectional studies of postural assessment were identified, with 2 reviewers independently assessing study quality...
September 26, 2016: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/27669245/analysis-of-uncertainty-in-a-middle-cost-device-for-3d-measurements-in-bim-perspective
#20
Alonso Sánchez, José-Manuel Naranjo, Antonio Jiménez, Alfonso González
Medium-cost devices equipped with sensors are being developed to get 3D measurements. Some allow for generating geometric models and point clouds. Nevertheless, the accuracy of these measurements should be evaluated, taking into account the requirements of the Building Information Model (BIM). This paper analyzes the uncertainty in outdoor/indoor three-dimensional coordinate measures and point clouds (using Spherical Accuracy Standard (SAS) methods) for Eyes Map, a medium-cost tablet manufactured by e-Capture Research & Development Company, Mérida, Spain...
2016: Sensors
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