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https://www.readbyqxmd.com/read/28088887/-improvement-of-lumbal-motor-control-and-trunkmuscle-conditions-with-a-novel-low-back-pain-prevention-exercise-program
#1
Viktória Kovácsné Bobály, Brigitta Szilágyi, Alexandra Makai, Ákos Koller, Melinda Járomi
INTRODUCTION: Ballet dancers often suffer from low back pain. AIM: Low back pain can be reduced by strengthening the core muscles with the help of a special exercise program. MATERIALS AND METHODS: In the study 62 ballet dancer women (average age: 14.89 ± 1.21 years) were included. Intervention group: n = 30 participant, average age: 14.86 ± 1.00 years, control group: n = 32 participant, average age: 14.91 ± 1.37 years. We examined the pain intensity that occurs during training with visual analog scale, the habitual posture with photogrammetry, the abdominal muscle strength with Kraus-Weber test, the static muscle strength of the trunk muscles with core test and the lumbar motor control with leg lowering test...
January 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28069258/reference-values-for-human-posture-measurements-based-on-computerized-photogrammetry-a-systematic-review
#2
Ana Freire Macedo Ribeiro, Anke Bergmann, Thiago Lemos, Antônio Guilherme Pacheco, Maitê Mello Russo, Laura Alice Santos de Oliveira, Erika de Carvalho Rodrigues
OBJECTIVE: The main objective of this study was to review the literature to identify reference values for angles and distances of body segments related to upright posture in healthy adult women with the Postural Assessment Software (PAS/SAPO). METHODS: Electronic databases (BVS, PubMed, SciELO and Scopus) were assessed using the following descriptors: evaluation, posture, photogrammetry, physical therapy, postural alignment, postural assessment, and physiotherapy...
January 6, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28059781/wing-kinematics-measurement-and-aerodynamics-of-a-dragonfly-in-turning-flight
#3
Chengyu Li, Haibo Dong
This study integrates high-speed photogrammetry, three-dimensional surface reconstruction, and computational fluid dynamics to explore a dragonfly (Erythemis Simplicicollis) in free flight. Asymmetric wing kinematics and the associated aerodynamic characteristics of a turning dragonfly are analyzed in detail. Quantitative measurements of wing kinematics show that compared to the outer wings, the inner wings sweep more slowly with a higher angle of attack during the downstroke, whereas they flap faster with a lower angle of attack during the upstroke...
January 6, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28058777/platysma-sparing-vascularized-submental-lymph-node-flap-transfer-for-extremity-lymphedema
#4
Igor Poccia, Chia-Yu Lin, Ming-Huei Cheng
BACKGROUND AND OBJECTIVES: Due to its consistent vascular and lymphatic anatomy, the vascularized submental lymph node flap is a reliable option for lymphedema treatment. Despite these advantages, flap harvest requires resection of platysma, which may cause a marginal mandibular nerve pseudo-paralysis. The aim of this study was to investigate the donor site morbidity of an innovative platysma-sparing vascularized submental lymph node flap transfer for treating extremity lymphedema. METHODS: Ten patients undergoing platysma sparing submental lymph-node flap harvest were prospectively enrolled in the study and compared with a control group of 10 patients who underwent standard submental lymph-node flap harvest...
January 6, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28047085/th-ab-202-08-a-robust-real-time-surface-reconstruction-method-on-point-clouds-captured-from-a-3d-surface-photogrammetry-system
#5
W Liu, A Sawant, D Ruan
PURPOSE: Surface photogrammetry (e.g. VisionRT, C-Rad) provides a noninvasive way to obtain high-frequency measurement for patient motion monitoring in radiotherapy. This work aims to develop a real-time surface reconstruction method on the acquired point clouds, whose acquisitions are subject to noise and missing measurements. In contrast to existing surface reconstruction methods that are usually computationally expensive, the proposed method reconstructs continuous surfaces with comparable accuracy in real-time...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046401/th-cd-207a-07-prediction-of-high-dimensional-state-subject-to-respiratory-motion-a-manifold-learning-approach
#6
W Liu, A Sawant, D Ruan
PURPOSE: The development of high dimensional imaging systems (e.g. volumetric MRI, CBCT, photogrammetry systems) in image-guided radiotherapy provides important pathways to the ultimate goal of real-time volumetric/surface motion monitoring. This study aims to develop a prediction method for the high dimensional state subject to respiratory motion. Compared to conventional linear dimension reduction based approaches, our method utilizes manifold learning to construct a descriptive feature submanifold, where more efficient and accurate prediction can be performed...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28033044/caliper-method-versus-digital-photogrammetry-for-assessing-arch-height-index-in-pregnant-women
#7
Kathryn D Harrison, Jean L McCrory
BACKGROUND: Foot anthropometry may be altered during pregnancy. Pregnant women often report lower-extremity pain that may be related to these alterations. The Arch Height Index Measurement System is a common method of foot arch assessment; however, the required calipers are costly and are not widely available. Thus, we compared the reliability of a digital photogrammetry method of arch height index (AHI) assessment with that of the Arch Height Index Measurement System. METHODS: Ten pregnant women (mean ± SD: age, 29 ± 4 years; height, 166...
November 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/27992167/the-eye-of-the-medusa-xrf-imaging-reveals-unknown-traces-of-antique-polychromy
#8
Matthias Alfeld, Maud Mulliez, Philippe Martinez, Kevin Cain, Philippe Jockey, Philippe Walter
The colorful decoration of statues and buildings in antique times is commonly described by the term Antique Polychromy. It is well known among scholars but less so in the interested public and its exact form is subject of ongoing research. In this paper we discuss results obtained from the Frieze of the Siphnian Treasury from the Sanctuary of Delphi (Greece). We will present the first applica-tion of a mobile instrument for macro-XRF imaging in the investigation of the Antique Polychromy and show that it allows to find significant traces not visible to the naked eye and not detectable by XRF spot measurements or any other mobile, non-invasive method...
December 19, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27987469/investigation-of-associations-between-recurrence-of-major-depressive-disorder-and-spinal-posture-alignment-a-quantitative-cross-sectional-study
#9
Janette Z Canales, Juliana T Fiquer, Rodolfo N Campos, Márcio Gerhardt Soeiro-de-Souza, Ricardo Alberto Moreno
The aim of this study was to investigate associations between poor spinal posture and the recurrence of major depressive episodes and severity of symptoms in patients with major depressive disorder (MDD). This was a cross-sectional quantitative study of MDD patients. Outpatients were recruited from consecutive admissions at a mood disorders unit of a tertiary psychiatric hospital. Of 136 MDD patients, 72 (53 women, 19 men; mean age, 42.4±9.1years) met all the criteria and completed the study. Forty-one patients were classified with a recurrent episode (RE) of MDD and 31 with a single episode (SE)...
December 12, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27913880/forensic-3d-documentation-of-skin-injuries
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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...
January 2017: 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
#16
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
#17
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
#18
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
#19
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
#20
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
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