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Z Sadozai, R Davies, J Warner
Non-displaced hip fractures can be difficult to diagnose on plain film radiographs. When there is ongoing clinical suspicion of an occult fracture, further imaging is obtained. We investigated the sensitivity of computed tomography (CT) scans in detecting these fractures and the delays to surgery that three-dimensional imaging causes. We identified 78 CT scans performed for possible hip fractures over the past 3 years with the presence and absence of a fracture recorded. Based on subsequent imaging, the accuracy of CT scans was determined...
October 18, 2016: Injury
Apeksha Chaturvedi, R A C Dilhani Ranasinghe, Abhishek Chaturvedi, Steven P Meyers
BACKGROUND: Lesions involving the outer cortical surface of the bone occur quite often among children. Broadly, these include benign cortical, juxtacortical and periarticular lesions, dysplasias affecting the cortical bone, regional and diffuse periosteal pathology and malignant tumours. Some of these lesions are unique to the paediatric population; others are more frequently seen among children than adults - yet others have an adult predilection but can occasionally be seen in children...
October 19, 2016: Insights Into Imaging
David Christian, Hyuma A Leland, Walter Osias, Seth Eberlin, Lori Howell
Morel-Lavellée lesions are soft tissue degloving injuries resulting from shearing trauma that induces separation of the superficial and deep fascias creating a potential space that becomes filled with hemolymph. Here we present a case of a 28-year-old male presenting with a persistent Type I Morel-Lavallée lesion 2.5 years after an automobile versus pedestrian accident. These lesions can be visualized via computed tomography, plain film and ultrasound, but magnetic resonance imaging is the modality of choice for their identification and characterization...
July 2016: Journal of Radiology Case Reports
Alexis Ogdie, William J Taylor, Tuhina Neogi, Jaap Fransen, Tim L Jansen, H Ralph Schumacher, Worawit Louthrenoo, Janitzia Vazquez-Mellado, Maxim Eliseev, Geraldine McCarthy, Lisa K Stamp, Fernando Perez-Ruiz, Francisca Sivera, Hang-Korng Ea, Martijn Gerritsen, Giovanni Cagnotto, Lorenzo Cavagna, Chingtsai Lin, Yin-Yi Chou, Anne-Kathrin Tausche, Manuella Lima Gomes Ochtrop, Matthijs Janssen, Jiunn-Horng Chen, Ole Slot, Juris Lazovskis, Douglas White, Marco A Cimmino, Till Uhlig, Nicola Dalbeth
OBJECTIVES: To examine the performance of ultrasound for the diagnosis of gout using presence of monosodium urate (MSU) crystals as the gold standard. METHODS: We analyzed data from the Study for Updated Gout Classification Criteria (SUGAR), a large, multi-center observational cross-sectional study of consecutive subjects with at least one swollen joint who conceivably may have gout. All subjects underwent arthrocentesis; cases were subjects with MSU crystal confirmation...
October 16, 2016: Arthritis & Rheumatology
Raaghesh Vijayan, K Swathi, K S Narayan
We propose an optimum low-temperature-based annealing procedure for semicrystalline donor-fullerene solar cells that is well-suited for plastic and flexible substrates. This proposed alternate strategy utilizes an external electric field (EF) across the bulk heterojunction (BHJ) film during processing at a desired temperature. This processing technique is studied for different molecular weights of the donor in the BHJ blend films. The films indicate an increase in interchain interactions of the semicrystalline polymer chains and an enhancement in hole mobility with EF-assisted annealing treatment...
October 12, 2016: ACS Applied Materials & Interfaces
Zynab Jawad, Fiona Carmichael, Nadine Houghton, Claire Bates
OBJECTIVE: The aim of the study was to review all cases referred for cone beam computed tomography (CBCT) to the department of dental radiology at the Leeds Dental Institute to aid diagnosis of root resorption associated with impacted canines. We aimed to establish if referral for and reporting of these CBCT assessments were in compliance with current guidelines. In addition, we introduced a new and innovative tool to aid reporting of CBCT images of root resorption associated with an impacted tooth...
October 7, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
An Zou, Dhirendra P Singh, Shalabh C Maroo
For over five decades, enhancement in pool boiling heat transfer has been achieved by altering the surface wetting, wickability, roughness, nucleation site density and providing separate liquid/vapor pathways. In this work, a new enhancement mechanism based on the early-evaporation of the microlayer is discovered and validated. The microlayer is a thin liquid film present at the base of a vapor bubble. Presence of micro-ridges on the silicon-dioxide surface partitions the microlayer and disconnects it from bulk liquid causing it to evaporate sooner, thus leading to increase in bubble growth rate, heat transfer, departure frequency and critical heat flux (CHF)...
October 6, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
R E Motyer, S Liddy, W C Torreggiani, O Buckley
BACKGROUND: Voice recognition (VR) dictation of radiology reports has become the mainstay of reporting in many institutions worldwide. Despite benefit, such software is not without limitations, and transcription errors have been widely reported. AIM: Evaluate the frequency and nature of non-clinical transcription error using VR dictation software. METHODS: Retrospective audit of 378 finalised radiology reports. Errors were counted and categorised by significance, error type and sub-type...
October 1, 2016: Irish Journal of Medical Science
Danny M Rabah, Mohamed S Mabrouki, Karim H Farhat, Mohamed A Seida, Mostafa A Arafa, Riyadh F Talic
This study was designed to find out the optimized energy delivery strategy in Shock Wave Lithotripsy (SWL) that yield to the best stone-free rate (SFR). In this clinical trial, 150 consecutive patients were randomized into three groups: (a) Dose escalation, 1500 SW at 18 kV, followed by 1500 SW at 20 kV then 1500 SW at 22 kV. (b) Constant dose, 4500 SW at 20 kV. All patients undergo plain X-ray film of the urinary tract at day 1, 14, and 90 to assess stone-free rate (SFR) which was defined as no stones or painless fragments less than 4 mm...
September 29, 2016: Urolithiasis
Yuwei Zhou, Uygar Teomete, Ozgur Dandin, Onur Osman, Taner Dandinoglu, Ulas Bagci, Weizhao Zhao
Bowing fractures are incomplete fractures of tubular long bones, often observed in pediatric patients, where plain radiographic film is the non-invasive imaging modality of choice in routine radiological workflow. Due to weak association between bent bone and distinct cortex disruption, bowing fractures may not be diagnosed properly while reading plain radiography. Missed fractures and dislocations are common in accidents and emergency practice, particularly in children. These missed injuries can result in more complicated treatment or even long-term disability...
September 17, 2016: Computers in Biology and Medicine
Josef N Tofte, Tyler L CarlLee, Andrew J Holte, Sean E Sitton, Stuart L Weinstein
STUDY DESIGN: Systematic Review. OBJECTIVE: To provide an evidence-based recommendation for when and how to employ imaging studies when diagnosing back pain thought to be caused by spondylolysis in pediatric patients. SUMMARY OF BACKGROUND DATA: Spondylolysis is a common structural cause of back pain in pediatric patients. The radiologic methods and algorithms used to diagnose spondylolysis are inconsistent among practitioners. METHODS: A literature review was performed in PubMed and Cochrane databases using the search terms "spondylolysis" "pediatric" "adolescent" "juvenile" "young" "lumbar" "MRI" "bone scan" "CT" and "SPECT"...
September 23, 2016: Spine
Rui-Fang Zhang, Yu-Chuan Fu, Yi Lu, Xiao-Xia Zhang, Yu-Min Hu, Yong-Jin Zhou, Nai-Feng Tian, Jia-Wei He, Zhi-Han Yan
BACKGROUND CONTEXT: Accurately evaluating the extent of trunk imbalance in the coronal plane is significant for patients before and after treatment. We preliminarily practiced a new method, axis-line-angle technique (ALAT), for evaluating coronal trunk imbalance with excellent intrao-bserver and inter-observer reliability. Radiologists and surgeons were encouraged to use this method in clinic. However, the optimal cut-off value of ALAT, determined the extent of coronal trunk imbalance, has not been calculated up to now...
September 21, 2016: Spine Journal: Official Journal of the North American Spine Society
Pingping Yang, Jiale Xie, Chunxian Guo, Chang Ming Li
Soft-material PEDOT is used to network hard Co3O4 nanowires for constructing both ion- and electron-conductive hierarchical porous structure Co3O4/PEDOT to greatly boost the capacitor energy density than sum of that of plain Co3O4 nanowires and PEDOT film. Specifically, the networked hierarchical porous structure of Co3O4/PEDOT is synthesized and tailored through hydrothermal method and post-electrochemical polymerization method for the PEDOT coating onto Co3O4 nanowires. Typically, Co3O4/PEDOT supercapacitor gets a highest areal capacitance of 160mFcm(-2) at a current density of 0...
January 1, 2017: Journal of Colloid and Interface Science
L A Archer, A Furey
PURPOSE: Avascular necrosis (AVN) of the humeral head is a devastating complication of proximal humeral fracture (PHF) that often results in long-term morbidity for the patient. Rates of AVN depend on the number of fracture fragments and are highly variable. The literature suggests that timely stable and anatomic reduction may decrease the rate at which AVN develops after PHF. To our knowledge, there is no literature published investigating a temporal relationship between the timing of PHF fixation and rates of AVN...
September 20, 2016: Musculoskeletal Surgery
Venkatraman Bhat, Vinay Belaval, Karthik Gadabanahalli, Vimal Raj, Sejal Shah
From the stand point of radiographic analysis most of the complex cyanotic congenital heart diseases (CHD), can be divided into those associated with decreased or increased pulmonary vascularity. Combination of a specific cardiac configuration and status of lung vasculature in a clinical context allows plain film diagnosis to be predicted in some CHD. Correlation of the position of the cardiac apex in relation to the visceral situs is an important information that can be obtained from the plain film. This information helps in gathering information about the atrio-ventricular, ventricular arterial concordance or discordance...
July 2016: Journal of Clinical and Diagnostic Research: JCDR
Jun Ho Baek, Il Hyung Park, Sung Hwa Seo
BACKGROUND: In 1951, Ardran reported that metastatic bone lesions could be detectable on plain radiography with 30% to 50% of decalcification. Authors performed experimental study for minimum level of decalcification to detect the osteolytic bone metastasis of long bone with recent technique of radiographs. METHODS: One pair of fibula and humerus from two cadavers was cut into specimen 1 inch in length. Distal half of specimen was dipped into hydrochloride (HCl) with 15 min interval...
August 2016: Journal of Bone Metabolism
James D Wylie, Jeremy A Ross, Jill A Erickson, Mike B Anderson, Christopher L Peters
BACKGROUND: Intraoperative fluoroscopy is commonly used to both guide the osteotomy and judge correction of the acetabular fragment in periacetabular osteotomy (PAO). Prior studies that have compared intraoperative fluoroscopic correction with postoperative radiographic correction were small studies that did not report intra- or interreader reliability. QUESTIONS/PURPOSES: (1) What is the correlation between intraoperative fluoroscopic correction in PAO compared with the correction seen on postoperative radiographs? (2) What is the reliability of radiographic measures of correction in PAO? METHODS: We performed a retrospective study of 121 patients (141 hips) who underwent PAO for symptomatic hip dysplasia at a tertiary referral center...
September 12, 2016: Clinical Orthopaedics and related Research
Marc Dilauro, Rebecca Thornhill, Najla Fasih
RATIONALE AND OBJECTIVES: Preservation of patient privacy and dignity are basic requirements for all patients visiting a hospital. The purpose of this study was to perform an audit of patients' satisfaction with privacy whilst in the Department of Medical Imaging (MI) at the Civic Campus of the Ottawa Hospital. MATERIALS AND METHODS: Outpatients who underwent magnetic resonance imaging (MRI), computed tomography (CT), ultrasonography (US), and plain film (XR) examinations were provided with a survey on patient privacy...
September 7, 2016: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
James T Bennett, Kenneth J Zook, Peter M Eyvazzadeh, Paul S Lin
OBJECTIVE: A novel motion-preserving technique to directly repair pars defects. Moreover, the indications for repair are expanded to include those with disc disease and associated spondylolisthesis. SUMMARY OF BACKGROUND DATA: The challenge in treating pars defects has been that there are few techniques available to stabilize them adequately. Treatment has focused on fusion across the inter-space versus grafting and instrumentation of the defect itself. We hypothesize that direct repair of the defect favors maintenance of normal motion characteristics by preserving the functional unit of the disc...
September 10, 2016: Surgical Technology International
Nallaguntla Lavanya, Yallamalli Indira Muzib, Jithan Aukunuru, Umamahesh Balekari
OBJECTIVE: The objective of the present work was to prepare and evaluate a novel oral formulation for systemic delivery of low molecular weight heparin (LMWH). The formulation consisted of Eudragit S 100-coated positively charged liposomes encapsulating LMWH and a penetration enhancer. MATERIALS AND METHODS: Positively charged liposomes were first prepared by the thin film hydration method using lipid (soy phosphotidylcholine and cholesterol) and stearyl amine (SA) in the optimum ratio of 16:1, along with cetylpyridinium chloride (CPC) as a penetration enhancer...
July 2016: International Journal of Pharmaceutical Investigation
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