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https://www.readbyqxmd.com/read/28538066/radial-forearm-osteocutaneous-free-flap-for-reconstruction-of-hard-palate-with-alveolar-defect
#1
Euicheol C Jeong, Sehoon Yoon, Young Ho Jung
The radial forearm free flap is beneficial for reconstruction of large palatal defect with oronasal fistula.A 51-year-old male patient who had anterior palate defect including alveolus after the radiation therapy of malignant cancer on the nasopharyngeal area undertook the radial forearm osteocutaneous free flap to close the oronasal fisula and restore the alveolar arch. The small radial bone segment was fixed in the alveolar defect and vascular anastomoses were performed with facial vessels in neck. The donor site was closed with split thickness skin graft...
May 19, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28535342/diffusion-under-confinement-hydrodynamic-finite-size-effects-in-simulation
#2
Pauline Simonnin, Benoit Noetinger, Carlos Nieto Draghi, Virginie Marry, Benjamin Rotenberg
We investigate finite-size effects on diffusion in confined fluids using molecular dynamics simulations and hydrodynamic calculations. Specifically, we consider a Lennard-Jones fluid in slit pores without slip at the interface and show that the use of periodic boundary conditions in the directions along the surfaces results in dramatic finite-size effects, in addition to that of the physically relevant confining length. As in the simulation of bulk fluids, these effects arise from spurious hydrodynamic interactions between periodic images and from the constraint of total momentum conservation...
May 23, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28534776/globally-consistent-wrinkle-aware-shading-of-line-drawings
#3
Pradeep Kumar Jayaraman, Chi-Wing Fu, Jianmin Zheng, Xueting Liu, Tien-Tsin Wong
Shading is a tedious process for artists involved in 2D cartoon and manga production given the volume of contents that the artists have to prepare regularly over tight schedule. While we can automate shading production with the presence of geometry, it is impractical for artists to model the geometry for every single drawing. In this work, we aim to automate shading generation by analyzing the local shapes, connections, and spatial arrangement of wrinkle strokes in a clean line drawing. By this, artists can focus more on the design rather than the tedious manual editing work, and experiment with different shading effects under different conditions...
May 17, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28534175/-aseptic-loosening-of-total-ankle-replacement-two-stage-revision-with-bone-augmentation-of-osseous-defects-and-secondary-prosthesis-implantation
#4
A Barg, M Wiewiorski, V Valderrabano
OBJECTIVE: To remove loosened ankle prosthesis components, perform osseous defect augmentation, and reimplant definitive prosthesis components to preserve ankle range of motion. INDICATIONS: Aseptic loosening of the tibial and/or talar ankle prosthesis components with substantial bone defect. CONTRAINDICATIONS: General surgical/anesthesiological risks, infections, critical soft tissue conditions, nonmanageable hindfoot instability, neurovascular impairment of the lower extremity, neuroarthropathy, substantial nonreconstructable osseous defects with or without cysts on the tibial and/or talar side, noncompliance, primary total ankle replacement (TAR) using intramedullary fixation (stem fixation), severely reduced bone quality, insulin-dependent diabetes mellitus, smoking, unrealistic patients' expectations, high activity in sports...
May 22, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28533807/malignant-soft-tissue-sarcoma-of-the-shoulder-treated-by-surface-mould-brachytherapy-boost-in-an-adjuvant-setting
#5
Ashutosh Mukherji, Mourougan Sinnatamby
PURPOSE: Soft tissue sarcomas of the extremities account for half of all soft tissue sarcomas. Radiotherapy and surgery have been the standard modalities in the treatment of this type of cancer. Brachytherapy can be used as the sole therapy, if the target volume is localized and easily accessible. This work reports three cases of shoulder soft tissue sarcomas with positive deep resected margins, treated with a combination of external beam radiotherapy and surface mould brachytherapy boost technique...
April 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28533647/f-18-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-appearance-of-extramedullary-hematopoesis-in-a-case-of-primary-myelofibrosis
#6
Anirban Mukherjee, Chandrasekhar Bal, Madhavi Tripathi, Chandan Jyoti Das, Shamim Ahmed Shamim
A 44-year-old female with known primary myelofibrosis presented with shortness of breath. High Resolution Computed Tomography thorax revealed large heterogeneously enhancing extraparenchymal soft tissue density mass involving bilateral lung fields. F-18-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography revealed mildly FDG avid soft tissue density mass with specks of calcification involving bilateral lung fields, liver, and spleen. Subsequent histopathologic evaluation from the right lung mass was suggestive of extramedullary hematopoesis...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28533050/dual-core-steered-non-rigid-registration-for-multi-modal-images-via-bi-directional-image-synthesis
#7
Xiaohuan Cao, Jianhua Yang, Yaozong Gao, Yanrong Guo, Guorong Wu, Dinggang Shen
In prostate cancer radiotherapy, computed tomography (CT) is widely used for dose planning purposes. However, because CT has low soft tissue contrast, it makes manual contouring difficult for major pelvic organs. In contrast, magnetic resonance imaging (MRI) provides high soft tissue contrast, which makes it ideal for accurate manual contouring. Therefore, the contouring accuracy on CT can be significantly improved if the contours in MRI can be mapped to CT domain by registering MRI with CT of the same subject, which would eventually lead to high treatment efficacy...
May 13, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28530232/tomographic-active-optical-trapping-of-arbitrarily-shaped-objects-by-exploiting-3d-refractive-index-maps
#8
Kyoohyun Kim, YongKeun Park
Optical trapping can manipulate the three-dimensional (3D) motion of spherical particles based on the simple prediction of optical forces and the responding motion of samples. However, controlling the 3D behaviour of non-spherical particles with arbitrary orientations is extremely challenging, due to experimental difficulties and extensive computations. Here, we achieve the real-time optical control of arbitrarily shaped particles by combining the wavefront shaping of a trapping beam and measurements of the 3D refractive index distribution of samples...
May 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28530133/efficacy-of-a-self-assembling-peptide-hydrogel-spg-178-gel-for-bone-regeneration-and-three-dimensional-osteogenic-induction-of-dental-pulp-stem-cells
#9
Jun Tsukamoto, Keiko Naruse, Yusuke Nagai, Shuhei Kan, Nobuhisa Nakamura, Masaki Hata, Maiko Omi, Tatsuhide Hayashi, Tatsushi Kawai, Tatsuaki Matsubara
The aim of this study was to assess the efficacy of a self-assembling peptide hydrogel as a scaffold for bone regeneration. We used a neutral and injectable self-assembling peptide hydrogel, SPG-178-Gel. Bone defects (5 mm in diameter) in rat calvarial bones were filled with a mixture of alpha-modified Eagle's medium and the peptide hydrogel. Three weeks after surgery, soft X-ray and micro-computed tomography (micro-CT) images of the gel-treated bones showed new bone formations in the periphery and in central areas of the defects...
May 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28528786/acoustic-perturbation-measures-improve-with-increasing-vocal-intensity-in-individuals-with-and-without-voice-disorders
#10
M Brockmann-Bauser, J E Bohlender, D D Mehta
OBJECTIVE: In vocally healthy children and adults, speaking voice loudness differences can significantly confound acoustic perturbation measurements. This study examines the effects of voice sound pressure level (SPL) on jitter, shimmer, and harmonics-to-noise ratio (HNR) in adults with voice disorders and a control group with normal vocal status. STUDY DESIGN: This is a matched case-control study. METHODS: We assessed 58 adult female voice patients matched according to approximate age and occupation with 58 vocally healthy women...
May 18, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28527861/cellular-computational-generalized-neuron-network-for-frequency-situational-intelligence-in-a-multi-machine-power-system
#11
Yawei Wei, Ganesh Kumar Venayagamoorthy
To prevent large interconnected power system from a cascading failure, brownout or even blackout, grid operators require access to faster than real-time information to make appropriate just-in-time control decisions. However, the communication and computational system limitations of currently used supervisory control and data acquisition (SCADA) system can only deliver delayed information. However, the deployment of synchrophasor measurement devices makes it possible to capture and visualize, in near-real-time, grid operational data with extra granularity...
April 4, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28527848/combined-therapy-for-a-rare-case-of-type-iii-dens-invaginatus-in-a-mandibular-central-incisor-with-a-periapical-lesion-a-case-report
#12
Ping Zhang, Xin Wei
Type III dens invaginatus has a complex root canal structure that poses a greater challenge when endodontic treatment is necessary. Type III dens invaginatus rarely affects mandibular central incisors. In this case, we reported a combined therapy of type III dens invaginatus in a mandibular central incisor with a periapical lesion. Cone-beam computed tomographic (CBCT) imaging was used in the diagnosis and management of the unusual anatomy of dens invaginatus. First, the hard tissue of the dens invaginatus was removed using a dental operating microscope...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28521439/arteriovenous-malformation-and-thyroid-metastasis-from-underlying-renal-cell-carcinoma-an-unusual-presentation-of-malignancy-a-case-report
#13
H J Albandar, E S Roberto, J R H See, J H Sabiers
Renal Clear Cell Carcinoma (RCC) comprises over 80% of renal malignancies in adults. Thyroid gland metastasis is rare in RCC. Few studies have described cases of RCC mistaken for benign arteriovenous malformation (AVM). To the best of our knowledge, an AVM arising from underlying RCC metastasis to the brain has not yet been reported. The current study presents a case of RCC metastasis to the thyroid gland, with an AVM identified to be a result of metastatic involvement in the brain. A 45-year-old African-American female presented with left-sided weakness, slurred speech, facial droop and seizure...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521330/pediatric-penetrating-neck-trauma-hard-signs-of-injury-and-selective-neck-exploration
#14
Rober A Tessler, Huong Nguyen, Christoper Newton, James Betts
BACKGROUND: Selective neck exploration and computed tomography angiography (CTA) in penetrating neck trauma have been well described in adults. However, data in the pediatric population are sparse. The extent to which these practices have been adopted in pediatric patients is unknown. METHODS: Retrospective, single-center cohort study of pediatric penetrating neck trauma for the years 2001 to 2014 in a dedicated children's hospital/Level 1 pediatric trauma center...
June 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28518181/a-semi-automatic-algorithm-for-preliminary-assessment-of-labial-gingiva-and-alveolar-bone-thickness-of-maxillary-anterior-teeth
#15
Sheng-Hung Chen, Hsun-Liang Chan, Yongning Lu, Sim-Heng Ong, Hom-Lay Wang, Eng Hong Ko, Po-Chun Chang
PURPOSE: Soft and hard tissue volumes are critical for implant placement and long-term stability. Although the literature has adequately addressed tissue biotypes of Western populations, pertinent information about Asian populations is limited. This study aimed to evaluate the soft and hard tissue profiles of the maxillary anterior teeth of the Taiwanese population using a semi-automatic algorithm. MATERIALS AND METHODS: Cone beam computed tomography images of 11 adults with well-aligned maxillary anterior teeth were overlaid with those of cast models, based on the tooth crowns manually outlined by two independent observers...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28516395/thoracoscopic-partial-resection-without-using-a-stapler-complete-republication
#16
Toshiya Toyazaki, Yasuaki Tomioka, Naohisa Chiba, Yuichiro Ueda, Yasuto Sakaguchi, Masashi Gotoh, Shinya Ishikawa, Tatsuo Nakagawa
Thoracoscopic partial pulmonary resection for small peripheral nodules without using a stapler has been introduced to our hospital. After partial resection was performed with electrocautery, two different methods of surface sealing were used: a coagulation method (C method) with Soft Coagulation alone, and a coagulation-suturing method (CS method) with Soft Coagulation combined with continuous suturing. The clinical outcomes of the two methods were retrospectively compared in this study. The C method was used in 19 lesions of 18 cases, and the CS method was used in 20 lesions of 19 cases...
May 17, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28515668/nested-soft-collinear-subtractions-in-nnlo-qcd-computations
#17
Fabrizio Caola, Kirill Melnikov, Raoul Röntsch
We discuss a modification of the next-to-next-to-leading order (NNLO) subtraction scheme based on the residue-improved sector decomposition that reduces the number of double-real emission sectors from five to four. In particular, a sector where energies and angles of unresolved particles vanish in a correlated fashion is redundant and can be discarded. This simple observation allows us to formulate a transparent iterative subtraction procedure for double-real emission contributions, to demonstrate the cancellation of soft and collinear singularities in an explicit and (almost) process-independent way and to write the result of a NNLO calculation in terms of quantities that can be computed in four space-time dimensions...
2017: European Physical Journal. C, Particles and Fields
https://www.readbyqxmd.com/read/28514996/post-autopsy-computed-tomography-pros-and-cons-in-a-firearm-death
#18
Sindi Visentin, Guido Pelletti, Caterina Dengo, Maria De Matteis, Massimo Montisci
Many studies have focused on the importance of post-mortem computed tomography (PMCT) prior to or in substitution of standard forensic autopsies in case of firearm death. However, due to the fact that PMCT is not routinely performed in all countries, in cases of death abroad it can happen that a CT scan is performed only after a first autopsy. A case of post-mortem re-examination, including the external examination and a post-autopsy computed tomography (PACT), of a gunshot victim of homicide in a foreign country is presented, and the pros and cons of imaging in post-autopsy setting are discussed...
May 1, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28514499/surface-anatomy-of-major-anatomical-landmarks-of-the-neck-in-an-adult-population-a-ct-evaluation-of-vertebral-level
#19
Masroor Badshah, Roger Soames, Muhammad Ibrahim Marwat, Muhammad Jaffar Khan, Adnan Khan
Introduction To compare the projectional surface anatomy of healthy individuals in an adult population with those with a thyroid mass, using computed tomography (CT). Methods Sixteen slice CT images of 101 individuals were analyzed using a 32-bit Radiant DICOM viewer to establish the relationships among major anatomical landmarks in the neck and their vertebral levels. The structures investigated included: hard palate (HP), hyoid bone (HB) including body and lesser horns, soft palate (SP), thyroid gland (TG) (both superior and inferior poles), thyroid gland anteroposterior (APD) and superoinferior (SID) diameters, thyroid isthmus (TI) superoinferior dimension, epiglottis, vertebral arteries (right and left), and both right and left parotid glands (superior and inferior extents)...
May 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28514296/clinicopathological-features-and-differential-diagnosis-of-aggressive-angiomyxoma-of-the-female-pelvis-5-case-reports-and-literature-review
#20
Hong Chen, Hongyan Zhao, Yan Xie, Mulan Jin
Aggressive angiomyxoma (AAM) is a rare mesenchymal tumor that usually occurs in the pelvis and perineum of young females. AAM can simulate Bartholin's gland cyst, abscess, lipoma, simple labial cyst, or other pelvic soft tissue tumors. Here we present five cases of AAM with mean age of 42. The patients mainly presented slow-growing mass in the abdomen and perineum (3 cases in the pelvis, 1 in the vulva, and 1 in the buttock). Color Doppler flow imaging revealed blood flow for the 3 pelvic lesions. Enhanced computed tomography and magnetic resonance imaging of the other 2 cases showed the typical "swirled" or "layered" structure characteristic...
May 2017: Medicine (Baltimore)
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