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https://www.readbyqxmd.com/read/28048577/tu-h-campus-iep2-05-breast-and-soft-tissue-equivalent-3d-printed-phantoms-for-imaging-and-dosimetry
#1
D Hintenlang, B Terracino
PURPOSE: The study has the goal to demonstrate that breast and soft tissue-equivalent phantoms for dosimetry applications in the diagnostic energy range can be fabricated using common 3D printing methods. METHODS: 3D printing provides the opportunity to rapidly prototype uniquely designed objects from a variety of materials. Common 3D printers are usually limited to printing objects based on thermoplastic materials such as PLA, or ABS. The most commonly available plastic is PLA, which has a density significantly greater than soft tissue...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047007/we-de-bra-03-construction-of-an-ultrasound-guidance-platform-for-image-guided-radiotherapy-with-the-intent-to-treat-transitional-cell-carcinoma
#2
J Sick, N Rancilio, C Fulkerson, P LaPetina, J Poulson, D Knapp, K Stantz
PURPOSE: Ultrasound (US) is a noninvasive, nonradiographic imaging technique with high spatial and temporal resolution that can be used for localizing soft-tissue structures and tumors in real-time during radiotherapy (inter- and intra-fraction). A detailed methodology integrating 3D-US within RT is presented. This method is easier to adopt into current treatment protocol than current US based systems and reduces user variability for image acquisition, thus eliminating transducer induced changes that limit CT planning system...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045812/miniplate-with-a-bendable-c-tube-head-allows-the-clinician-to-alter-biomechanical-advantage-in-extremely-complicated-anatomic-structure
#3
Kyung Won Seo, Nur Serife Iskenderoglu, Eui Hwan Hwang, Kyu-Rhim Chung, Seong-Hun Kim
BACKGROUNDS: This article reports C-tube miniplates as a practical temporary anchorage device choice to treat open bite patients with maxillary sinus pneumatization. METHODS: The C-tube components are titanium anchor plates and monocortical screws that are basically similar to any other miniplate systems, but it has the unique characteristic of the tube head to be malleable. The manipulation of the head part is easy due to the composition of pure titanium. The I-shaped C-tube with 3 holes and T-shaped C-tube miniplates were placed above the apices of maxillary molars as an absolute anchorage system to intrude the posterior maxilla...
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28026748/in-situ-mechanical-characterization-of-multilayer-soft-tissue-using-ultrasound-imaging
#4
Saurabh Dargar, Ali Akyildiz, Suvranu De
In this paper we report the development of a technique to characterize layer-specific nonlinear material properties of soft tissue in situ with the potential for in vivo testing. A Soft Tissue Elastography Robotic Arm (STiERA) system comprising of a robotically manipulated 30 MHz high-resolution ultrasound probe, a custom designed compression head and load cells has been developed to perform compression ultrasound imaging on the target tissue and measure reaction forces. A multi-layer finite element model is iteratively optimized to identify the material coefficients of each layer...
December 23, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28008395/nasopharynx-the-secret-vault-for-lost-foreign-bodies-of-the-upper-aerodigestive-tract
#5
Arijit Jotdar, Mainak Dutta, Sohag Kundu
INTRODUCTION: Foreign bodies in the upper aerodigestive tract often get lost following inappropriate attempts at removal. Children may present late with localized infection, posing a challenge to the otolaryngologists in a referral set-up in diagnosing and retrieving such foreign bodies. CASE REPORT: A two-year-old boy presented with refractory purulent rhinorrhea and intermittent low-grade fever. The symptoms suggested rhinosinusitis; however, following a high index of suspicion, he was referred for further evaluation, with the possibility of any hidden foreign object in the upper aerodigestive tract...
November 2016: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/27995490/hydrogel-tissue-expanders-for-stomatology-part-i-methacrylate-based-polymers
#6
Jakub Hrib, Jakub Sirc, Petr Lesny, Radka Hobzova, Miroslava Duskova-Smrckova, Jiri Michalek, Roman Smucler
In order to create a soft tissue surplus, implantable volume expanders are often utilized in dental surgery. Implanted tissue expanders should gradually increase their volume, exerting a constant pressure on the surrounding tissue for weeks. Current tissue expanders are based predominantly on externally inflatable balloons or on osmotically active tissue expanders that use soft hydrogels wrapped in perforated plastic coatings, which limit fluid entry and swelling. We have designed and examined tissue expanders based on the controlled rate expansive hydrogels synthesized from copolymers of selected methacrylates and N-vinylpyrrolidone, cross-linked with a combination of non-degradable (glycol dimethacrylates) and hydrolytically degradable (N,O-dimethacryloylhydroxylamine) cross-linkers...
January 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/27995396/vibration-testing-procedures-for-bone-stiffness-assessment-in-fractures-treated-with-external-fixation
#7
Lorenza Mattei, Antonia Longo, Francesca Di Puccio, Enrico Ciulli, Stefano Marchetti
A bone healing assessment is crucial for the successful treatment of fractures, particularly in terms of the timing of support devices. However, in clinical practice, this assessment is only made qualitatively through bone manipulation and X-rays, and hence cannot be repeated as often as might be required. The present study reconsiders the quantitative method of frequency response analysis for healing assessments, and specifically for fractures treated with an external fixator. The novelty consists in the fact that bone excitation and response are achieved through fixator pins, thus overcoming the problem of transmission through soft-tissues and their damping effect...
December 19, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27989977/a-review-of-the-literature-on-the-transciliary-supraorbital-keyhole-approach
#8
REVIEW
Daniel Walter Zumofen, Jonathan Rychen, Michel Roethlisberger, Ethan Taub, Daniel Kalbermatten, Erez Nossek, Matthew Potts, Raphael Guzman, Howard Antony Riina, Luigi Mariani
BACKGROUND: Conventional craniotomy approaches involve substantial soft tissue manipulation that can cause complications. The transciliary supraorbital keyhole approach was developed to avoid these complications. OBJECTIVE: To review the safety and effectiveness of the transciliary supraorbital keyhole approach. MATERIAL AND METHODS: We searched the PubMed/Medline database for full-text publications from 1996 onward containing data on 100 or more cases of aneurysm clipping or tumor resection by the transciliary supraorbital approach...
October 27, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27976776/probing-the-adhesion-properties-of-alginate-hydrogels-a-new-approach-towards-the-preparation-of-soft-colloidal-probes-for-direct-force-measurements
#9
Nicolas Helfricht, Elena Doblhofer, Vera Bieber, Petra Lommes, Volker Sieber, Thomas Scheibel, Georg Papastavrou
The adhesion of alginate hydrogels to solid surfaces was probed by atomic force microscopy (AFM) in the sphere/plane geometry. For this purpose a novel approach has been developed for the immobilization of soft colloidal probes onto AFM-cantilevers, which is inspired by techniques originating from cell biology. The aspiration and consecutive manipulation of hydrogel beads by micropipettes allows the entire manipulation sequence to be carried-out in situ. Hence, any alteration of the hydrogel beads upon drying can be excluded...
January 18, 2017: Soft Matter
https://www.readbyqxmd.com/read/27964801/gesteme-free-context-aware-adaptation-of-robot-behavior-in-human-robot-cooperation
#10
Federico Nessi, Elisa Beretta, Cecilia Gatti, Giancarlo Ferrigno, Elena De Momi
BACKGROUND: Cooperative robotics is receiving greater acceptance because the typical advantages provided by manipulators are combined with an intuitive usage. In particular, hands-on robotics may benefit from the adaptation of the assistant behavior with respect to the activity currently performed by the user. A fast and reliable classification of human activities is required, as well as strategies to smoothly modify the control of the manipulator. In this scenario, gesteme-based motion classification is inadequate because it needs the observation of a wide signal percentage and the definition of a rich vocabulary...
November 2016: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/27935562/current-conservative-management-and-classification-of-club-foot-a-review
#11
Ganesan Balasankar, Ameersing Luximon, Adel Al-Jumaily
Clubfoot, known as congenital talipes equinovarus, is one of the complex paediatric foot deformity with the incidence of 1 in every 1000 live births. It consists of four complex foot abnormalities such as forefoot adductus, midfoot cavus, and hindfoot varus and ankle equinus. There are a number of surgical techniques (soft tissue releases, arthrodesis) used to correct clubfoot. However currently the conservative management (manipulation, serial casting, and braces) of clubfoot is considered as the best choice and it is widely accepted among orthopaedists...
November 30, 2016: Journal of Pediatric Rehabilitation Medicine
https://www.readbyqxmd.com/read/27923707/three-dimensional-magnetic-resonance-imaging-quantification-of-glenoid-bone-loss-is-equivalent-to-3-dimensional-computed-tomography-quantification-cadaveric-study
#12
Adam B Yanke, Jason J Shin, Ian Pearson, Bernard R Bach, Anthony A Romeo, Brian J Cole, Nikhil N Verma
PURPOSE: To assess the ability of 3-dimensional (3D) magnetic resonance imaging (MRI, 1.5 and 3 tesla [T]) to quantify glenoid bone loss in a cadaveric model compared with the current gold standard, 3D computed tomography (CT). METHODS: Six cadaveric shoulders were used to create a bone loss model, leaving the surrounding soft tissues intact. The anteroposterior (AP) dimension of the glenoid was measured at the glenoid equator and after soft tissue layer closure the specimen underwent scanning (CT, 1...
December 3, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27909672/arthroscopic-360%C3%A2-capsular-release-for-adhesive-capsulitis-in-the-lateral-decubitus-position
#13
Gregory L Cvetanovich, Timothy Leroux, Jason T Hamamoto, John D Higgins, Anthony A Romeo, Nikhil N Verma
Idiopathic adhesive capsulitis of the shoulder is a relatively common condition that results in pain and loss of motion due to capsular thickening and fibrosis. Most cases are successfully treated with conservative management including physical therapy and intra-articular steroid injections. If conservative management fails, arthroscopic capsular release allows precise release of thickened capsular tissue with a lower risk of complications and less soft-tissue trauma than manipulation under anesthesia alone...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27875499/impact-of-acute-dietary-manipulations-on-dxa-and-bia-body-composition-estimates
#14
Grant M Tinsley, Flor E Morales, Jeffrey S Forsse, Peter W Grandjean
PURPOSE: To examine the effects of acute pre-assessment diets on body composition estimates obtained by dual-energy x-ray absorptiometry (DXA) and bioelectrical impedance analysis (BIA). METHODS: In a counterbalanced design, 48 males and females were provided with two one-day diets: high-carbohydrate diet (9 g CHO/kg) and very low-carbohydrate diet (1 to 1.5 g CHO/kg). For each condition, body composition was assessed in the morning after an overnight fast, in the afternoon after feeding, and the following morning after a second overnight fast...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27869623/contamination-of-the-surgical-field-with-propionibacterium-acnes-in-primary-shoulder-arthroplasty
#15
Travis M Falconer, Mohammed Baba, Lisa M Kruse, Oscar Dorrestijn, Matthew J Donaldson, Margaret M Smith, Melanie C Figtree, Bernard J Hudson, Benjamin Cass, Allan A Young
BACKGROUND: Propionibacterium acnes is a common pathogen identified in postoperative shoulder infection. It has been shown to be present in culture specimens during primary shoulder arthroplasty; however, recent work has suggested that it is most likely to be a contaminant. Our aim was to identify the potential sources of contamination in shoulder arthroplasty. METHODS: Tissue swabs were obtained for microbiological analysis from consecutive patients undergoing primary shoulder arthroplasty...
October 19, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27869621/ponseti-treatment-of-rigid-residual-deformity-in-congenital-clubfoot-after-walking-age
#16
Massimiliano Dragoni, Pasquale Farsetti, Giuseppe Vena, Diego Bellini, Pierluigi Maglione, Ernesto Ippolito
BACKGROUND: There is no established treatment for rigid residual deformity of congenital clubfoot (CCF) after walking age. Soft-tissue procedures, osseous procedures, and external fixation have been performed with unpredictable results. We applied the Ponseti method to patients with this condition in order to improve the outcomes of treatment. METHODS: We retrospectively reviewed the cases of 44 patients (68 feet) with congenital clubfoot whose mean age (and standard deviation) at treatment was 4...
October 19, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27858208/a-cable-driven-soft-robot-surgical-system-for-cardiothoracic-endoscopic-surgery-preclinical-tests-in-animals
#17
Hesheng Wang, Runxi Zhang, Weidong Chen, Xiaozhou Wang, Rolf Pfeifer
BACKGROUND: Minimally invasive surgery attracts more and more attention because of the advantages of minimal trauma, less bleeding and pain and low complication rate. However, minimally invasive surgery for beating hearts is still a challenge. Our goal is to develop a soft robot surgical system for single-port minimally invasive surgery on a beating heart. MATERIALS AND METHODS: The soft robot described in this paper is inspired by the octopus arm. Although the octopus arm is soft and has more degrees of freedom (DOFs), it can be controlled flexibly...
November 17, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27857639/chiropractic-management-of-a-patient-with-perineal-numbness-after-arthroscopic-hip-surgery-a-case-report
#18
Harold M Olson, Andrew J Zetocha, Courtney A Olson
OBJECTIVE: The purpose of this case report is to describe the chiropractic management of a patient with postoperative perineal numbness as a result of hip arthroscopy. CLINICAL FEATURES: A female patient presented to a chiropractic clinic with 7 weeks of ongoing perineal numbness after right hip arthroscopic surgery with labral repair. The patient reported lack of sensation during urination, sexual intercourse, and the insertion and removal of female hygienic products into the vagina...
December 2016: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/27836071/the-treatment-of-neck-pain-associated-disorders-and-whiplash-associated-disorders-a-clinical-practice-guideline
#19
André E Bussières, Gregory Stewart, Fadi Al-Zoubi, Philip Decina, Martin Descarreaux, Jill Hayden, Brenda Hendrickson, Cesar Hincapié, Isabelle Pagé, Steven Passmore, John Srbely, Maja Stupar, Joel Weisberg, Joseph Ornelas
OBJECTIVE: The objective was to develop a clinical practice guideline on the management of neck pain-associated disorders (NADs) and whiplash-associated disorders (WADs). This guideline replaces 2 prior chiropractic guidelines on NADs and WADs. METHODS: Pertinent systematic reviews on 6 topic areas (education, multimodal care, exercise, work disability, manual therapy, passive modalities) were assessed using A Measurement Tool to Assess Systematic Reviews (AMSTAR) and data extracted from admissible randomized controlled trials...
October 2016: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/27799661/effects-of-manual-therapy-on-shoulder-pain-in-office-workers
#20
Seong-Uk Go, Byoung-Hee Lee
[Purpose] The purpose of this study was to determine the effects of manual therapy on shoulder pain in office workers. [Subjects and Methods] Subjects included 38 office workers who were randomly divided into two groups: a manual therapy group of 19 subjects and a shoulder stabilization exercise group of 19 subjects. All subjects underwent evaluation of the pressure pain threshold in the splenius capitis and upper, middle, and lower trapezius muscles on both sides. The manual therapy used in the study was designed to include soft-tissue mobilization, prone thoracic mobilization, prone selected thoracic mobilization, cervical mobilization, and thoracic manipulation...
September 2016: Journal of Physical Therapy Science
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