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https://www.readbyqxmd.com/read/28230608/specialized-imaging-and-procedures-in-pediatric-pancreatology-a-north-american-society-for-pediatric-gastroenterology-hepatology-and-nutrition-clinical-report
#1
Tom K Lin, David M Troendle, Daniel B Wallihan, Bradley Barth, Victor L Fox, Douglas S Fishman, Veronique D Morinville
OBJECTIVES: An increasing number of children are being diagnosed with pancreatitis and other pancreatic abnormalities. Dissemination of the information regarding existing imaging techniques and endoscopic modalities to diagnose and manage pancreatic disorders in children is sorely needed. METHODS: We conducted a review of the medical literature on the use of the following imaging and procedural modalities in pediatric pancreatology: transabdominal ultrasonography (TUS), computed tomography (CT), magnetic resonance imaging (MRI)/magnetic resonance cholangiopancreatography (MRCP), endoscopic ultrasonography (EUS), and endoscopic retrograde cholangiopancreatography (ERCP)...
March 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28230571/infection-and-complications-following-low-velocity-intra-articular-gunshot-injuries
#2
Mai P Nguyen, Michael S Reich, Jeffrey A O'Donnell, Jonathan C Savakus, Nicholas F Prayson, Joseph F Golob, Amy A McDonald, John J Como, Heather A Vallier
OBJECTIVES: The purpose of this study is to characterize the demographics, interventions, infection rates, and other complications following intra-articular gunshot wounds. DESIGN: Retrospective review. SETTING: Level I trauma center. PATIENTS/PARTICIPANTS: Fifty-three patients with 55 civilian low-velocity intra-articular gunshot injuries with a minimum of four weeks follow-up were included in the study. Seven patients had associated vascular injuries...
February 20, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28229270/should-the-annulus-be-fixed-in-aortic-valve-sparing-root-replacement-with-remodeling
#3
Kojiro Furukawa, Keiji Kamohara, Junji Yunoki, Shugo Koga, Manabu Itoh, Hiroyuki Morokuma, Yosuke Mukae, Tsuyoshi Itoh, Shigeki Morita
OBJECTIVES: If the aortic root dilates after native aortic valve-sparing root reconstruction with remodeling, aortic regurgitation may recur. However, it has not been demonstrated clearly that the aortic root dilates after remodeling. METHODS: This study enrolled 15 patients who underwent an aortic valve-sparing operation with remodeling (2002-2014) but without any ventriculo-aortic junction (VAJ) fixation. Technically, special care was taken to pass the sutures through the fibrous annulus...
February 22, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28229193/osseointegrated-prostheses-for-rehabilitation-following-amputation-the-pioneering-swedish-model
#4
Yan Li, Rickard Brånemark
The direct attachment of osseointegrated (OI) prostheses to the skeleton avoids the inherent problems of socket suspension. It also provides physiological weight bearing, improved range of motion in the proximal joint, as well as osseoperceptive sensory feedback, enabling better control of the artificial limbs by amputees. The present article briefly reviews the pioneering efforts on extremity osseointegration surgeries in Sweden and the development of the OPRA (Osseointegrated Prostheses for the Rehabilitation of Amputees) program...
February 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28228201/five-year-retrospective-review-of-blunt-renal-injuries-at-a-level-i-trauma-center
#5
Jessica Burns, Megan Brown, Zakaria I Assi, Eric J Ferguson
We report the experience of a Level I trauma center in the management of blunt renal injury during a 5-year period, with special attention to those treated using angiography with embolization. The institutional trauma registry was queried for all patients with blunt renal injury between September 1, 2009 and August 30, 2014. Each injury was graded using the American Association for the Surgery of Trauma guidelines. Patients that underwent angiography with embolization were reviewed for case-specific information including imaging findings, treatment, materials used, clinical course, and mortality...
February 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28227965/multiscale-brain-machine-interface-decoders
#6
Han-Lin Hsieh, Maryam M Shanechi, Han-Lin Hsieh, Maryam M Shanechi, Han-Lin Hsieh, Maryam M Shanechi
Brain-machine interfaces (BMI) have vastly used a single scale of neural activity, e.g., spikes or electrocorticography (ECoG), as their control signal. New technology allows for simultaneous recording of multiple scales of neural activity, from spikes to local field potentials (LFP) and ECoG. These advances introduce the new challenge of modeling and decoding multiple scales of neural activity jointly. Such multi-scale decoding is challenging for two reasons. First, spikes are discrete-valued and ECoG/LFP are continuous-valued, resulting in fundamental differences in statistical characteristics...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227783/tooth-separation-from-dental-model-using-segmentation-field
#7
Hao Wang, Zhongyi Li, Hao Wang, Zhongyi Li, Zhongyi Li, Hao Wang
Tooth segmentation on dental model is an essential step of computer-aided-design systems for orthodontic virtual treatment planning. However, efficiently identifying cutting boundary to separate tooth from dental model still remains a challenge, due to various geometrical shapes of teeth, complex tooth arrangements and varying degrees of crowding problem. Most segmentation approaches presented before are not able to achieve a balance between fine segmentation results and simple operating procedure. In this article, we present a novel and efficient framework that achieves tooth segmentation based on the segmentation field...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227078/real-time-respiration-rate-measurement-from-thoracoabdominal-movement-with-a-consumer-grade-camera
#8
Avishek Chatterjee, A P Prathosh, Pragathi Praveena, Avishek Chatterjee, A P Prathosh, Pragathi Praveena, Avishek Chatterjee, A P Prathosh, Pragathi Praveena
In this paper, we propose a novel computer vision technique to measure respiration rate by counting the periodic thoracoabdominal motion in real-time using an inexpensive consumer grade camera. We compute the component of optical flow parallel to the image gradient at each pixel, which is a computationally inexpensive operation. Then, we find a principal flow field by gathering information over many frames. Subsequently, in each frame, we compute the component of flow along this principal flow field to capture the thoracoabdominal motion...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226992/multi-layer-low-frequency-tissue-equivalent-phantoms-for-noninvasive-test-of-shallow-implants-and-evaluating-antenna-body-interaction
#9
Lawrence Fomundam, Jenshan Lin, Lawrence Fomundam, Jenshan Lin, Jenshan Lin, Lawrence Fomundam
In this work, a tissue equivalent compound phantom with dielectric properties equivalent to an average human body surface has been developed for a low frequency operating range of 30 MHz to 200 MHz. The compound phantom consists of skin, fat, and muscle layers respectively. The phantom is simple to fabricate with low cost components. A custom coaxial test fixture has been developed to characteristic phantom dielectric properties, which eliminates use of a specialized expensive dielectric measurement probe. The proposed composite phantom can be used as a noninvasive technique to evaluate shallow biomedical implants, antenna-body interaction, and specific absorption rate of tissue media...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226348/-the-key-points-of-prevention-for-special-surgical-complications-after-radical-operation-of-gastric-cancer
#10
Hao Xu, Weizhi Wang, Panyuan Li, Diancai Zhang, Li Yang, Zekuan Xu
Incidence of gastric cancer is high in China and standard radical operation is currently the main treatment for gastric cancer. Postoperative complications, especially some special complications, can directly affect the prognosis of patients, even result in the increase of mortality. But the incidences of these special complications are low, so these complications are often misdiagnosed and delayed in treatment owing to insufficient recognition of medical staff. These special complications include (1) Peterson hernia: It is an abdominal hernia developed in the space between Roux loop and transverse colon mesentery after Roux-Y reconstruction of digestive tract...
February 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28224363/prognostic-significance-of-sarcopenia-in-patients-with-esophagogastric-junction-cancer-or-upper-gastric-cancer
#11
Kensuke Kudou, Hiroshi Saeki, Yuichiro Nakashima, Keitaro Edahiro, Shotaro Korehisa, Daisuke Taniguchi, Ryosuke Tsutsumi, Sho Nishimura, Yu Nakaji, Shingo Akiyama, Hirotada Tajiri, Ryota Nakanishi, Junji Kurashige, Masahiko Sugiyama, Eiji Oki, Yoshihiko Maehara
BACKGROUND: The association between sarcopenia and postoperative outcomes for patients with gastrointestinal malignancies remains controversial. This study aimed to assess the impact of sarcopenia on short- and long-term outcomes after surgery for esophagogastric junction cancer (EGJC) or upper gastric cancer (UGC). METHODS: The study reviewed 148 patients with EGJC or UGC who underwent surgical resection. The patients were categorized into the sarcopenia group or the non-sarcopenia group according to their skeletal muscle index calculated using abdominal computed tomography images...
February 21, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28224030/safety-and-effectiveness-of-sleeve-gastrectomy-versus-gastric-bypass-one-year-results-of-tehran-obesity-treatment-study-tots
#12
Maryam Barzin, Alireza Khalaj, Mohammad Ali Motamedi, Pravin Shapoori, Fereidoun Azizi, Farhad Hosseinpanah
AIM: We aimed to compare the effectiveness and safety of sleeve gastrectomy versus gastric bypass at one-year. BACKGROUND: Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) are the two most commonly performed bariatric procedures worldwide. METHODS: Patients from a prospectively collected database who presented to a specialized bariatric center and underwent a primary bariatric procedure between March 2013 and April 2015 were included and compared regarding major and minor complication rates and weight loss parameters at 6 and 12 months...
December 2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28222260/the-k-channel-a-multi-functional-architecture-for-dynamically-re-configurable-sample-processing-in-droplet-microfluidics
#13
Steven R Doonan, Ryan C Bailey
By rapidly creating libraries of thousands of unique, miniaturized reactors, droplet microfluidics provides a powerful method for automating high-throughput chemical analysis. In order to engineer in-droplet assays, microfluidic devices must add reagents into droplets, remove fluid from droplets, and perform other necessary operations, each typically provided by a unique, specialized geometry. Unfortunately, modifying device performance or changing operations usually requires re-engineering the device among these specialized geometries, a time-consuming and costly process when optimizing in-droplet assays...
February 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28221155/super-mini-pcnl-smp-material-indications-technique-advantages-and-results
#14
Zhijian Zhao, Aierken Tuerxu, Yongda Liu, Wenqi Wu, Abulizi Simayi, Wen Zhong, Wenzhong Chen, Abudukahaer Batuer, Guohua Zeng
OBJECTIVE: To introduce an emerging technique termed 'super-mini- percutaneous nephrolithotomy' (SMP) and describe its application in practice. METHODS: We described the technique of SMP in the treatment of renal stones with emphasis on the material, indications, technique procedure, advantages, and results. RESULTS: SMP refers to a 7 Ch. nephroscope placed through a 10-14 Ch. metal access sheath with functions of both irrigation and suction-evacuation, to achieve stone fragmentation via laser or pneumatic lithotripsy...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28220858/time-reversal-breaking-induced-quantum-spin-hall-effect
#15
Wei Luo, D X Shao, Ming-Xun Deng, W Y Deng, L Sheng
We show that quantum spin Hall (QSH) effect does not occur in a square lattice model due to cancellation of the intrinsic spin-orbit coupling coming from different hopping paths. However, we show that QSH effect can be induced by the presence of staggered magnetic fluxes alternating directions square by square. When the resulting Peierls phase takes a special value , the system has a composite symmetry ΘΡ- with Θ the time-reversal operator and Ρ- transforming the Peierls phase from γ to γ - , which protects the gapless edge states...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220476/response-of-trabecular-bone-thyroid-c-and-follicular-cells-to-synthetic-salmon-calcitonin-in-middle-aged-orchidectomized-male-rats
#16
Branko Filipović, Branka Šošić-Jurjević, Vladimir Ajdžanović, Jasmina Živanović, Nataša Ristić, Svetlana Trifunović, Verica Milošević
In contrast to studies in women, male osteoporosis is poorly understood and strictly related to advancing age. Among the first antiresorptive substances used in the prevention and treatment of osteoporosis is calcitonin (CT), a hypocalcemic hormone that potently inhibits osteoclastic bone resorption. Natural CT is produced and secreted by thyroid C-cells. The other endocrine population of thyroid cells produces thyroid hormones (TH), which also affect bone turnover. The aim of this study was to evaluate the influence of salmon CT on trabecular bone microarchitecture with special reference to effects on the structure and function of both CT- and TH-producing thyroid cells in orchidectomized (Orx) middle-aged rats...
February 20, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28216813/pre-maxillary-complex-morphology-in-bilateral-cleft-and-hypothesis-on-laterality-of-deviated-pre-maxilla
#17
Jyotsna Murthy, Devi Manisha
INTRODUCTION: Pre-maxillary complex (pre-maxilla [PMX] + vomer) morphology in bilateral complete cleft of primary and secondary palate (BCLCP) is very complex and less reviewed in literature. MATERIALS AND METHODS: In this retrospective cross-sectional study, 200 consecutive BCLCP patients were selected. Their pre-operative clinical photographs and dental casts were evaluated by a single investigator at two different points of time, to study the morphology of PMX and vomer with special emphasis on deviation of vomer and rotation of PMX...
September 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28215968/unicompartmental-knee-arthroplasty-vs-total-knee-arthroplasty-for-medial-compartment-arthritis-in-patients-older-than-75-years-comparable-reoperation-revision-and-complication-rates
#18
Homayoun Siman, Atul F Kamath, Nazly Carrillo, William S Harmsen, Mark W Pagnano, Rafael J Sierra
BACKGROUND: Prior studies comparing unicompartmental knee arthroplasty (UKA) with total knee arthroplasty (TKA) in the elderly are limited by heterogeneity in arthritic disease patterns and patient selection. We report the results of UKA and TKA in patients 75 years and older with isolated medial compartmental arthritis, with special emphasis on immediate postoperative recovery, complications, reoperation rates, and implant survivorship at midterm follow-up. METHODS: A retrospective review was performed of all patients 75 years and older who underwent UKA or TKA at our institution between 2002 and 2012...
January 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28213847/ultra-short-stem-anchorage-in-the-proximal-tibial-epiphysis-after-intercalary-tumor-resections-analysis-of-reconstruction-survival-in-four-patients-at-a-mean-follow-up-of-56-months
#19
W K Guder, J Hardes, G Gosheger, M Nottrott, A Streitbürger
INTRODUCTION: Tumors localized in the proximal tibial meta-diaphysis often lead to osteoarticular resections. MATERIALS AND METHODS: In this study, we retrospectively reviewed four patients who underwent intercalary tumor resection and reconstruction using an ultra-short stem in the proximal tibial epiphysis, a procedure that to our knowledge has not been reported in literature so far. RESULTS: At the time of operation, the mean patient age was 26...
February 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28213250/novel-electroanalytical-method-based-on-the-electrostriction-phenomenon-and-its-application-to-determination-of-cr-vi-by-the-flow-injection-technique
#20
Marcin Wieczorek, Jolanta Kochana, Paweł Knihnicki, Karolina Wapiennik, Paweł Kościelniak
The electrostriction phenomenon is observed in membranes of thickness in the nanometer range, e.g. bilayer lipid membranes or self-assembled monolayers. Strong electrical field of 105-106V/cm in intensity appears when applying the potential lower than 1V to these membranes. Electrostatic forces change the dimensions of a dielectric, hence the membrane compression and decrease in thickness are observed. As a result, increase in the membrane capacitance is recorded. The presented work covers development and application of a new analytical method based on the innovative capacitance-to-frequency conversion method and flow technique...
May 1, 2017: Talanta
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