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Jae Hoon Lee, Duke Whan Chung, Jong Hun Baek, Young Jun Kim, So Young Park
Background Although proximal fibular flaps have been widely applied in wrist arthroplasty, controversy remains regarding which side of the proximal fibula is better for reconstruction of the distal radius. If the articular surface of the proximal fibula shows dorsal tilting, the ipsilateral (right) proximal fibula should be harvested in right wrist arthroplasty because the articular surface of the distal radius normally has volar tilt. This study investigated anatomical similarities between the proximal fibular articular surface and the distal radius articular surface based on morphologic analysis of the proximal fibula using computed tomography (CT)...
October 21, 2016: Journal of Reconstructive Microsurgery
Devin Ganesh, Ben Service, Brian Zirgibel, Kenneth Koval
OBJECTIVES: To assess the utility of the dorsal tangential view (DTV) in detecting intraoperative dorsal screw penetration in distal radius fractures treated with volar locked plating. DESIGN: Retrospective cohort study. SETTING: Academic level 1 trauma center. PATIENTS/PARTICIPANTS: Skeletally mature patients where open reduction internal fixation with volar locked plating was the definitive treatment. A total of twenty-six patients were evaluated...
November 2016: Journal of Orthopaedic Trauma
Ang Li, Xiang Li, Xujiang Yu, Wei Li, Ruyi Zhao, Xiao An, Daxiang Cui, Xiaoyuan Chen, Wanwan Li
In this work, we report a successful synthesis of copper bismuth sulfide nanorods (NRs) with broad and strong photoabsorption ranging from ultraviolet (UV) to near-infrared (NIR) wavelengths, which can be used as a 1064 nm-laser-driven photothermal agent with the photothermal conversion efficiency of 40.7%, noticeably higher than most of the reported PTT agents working in NIR-II window. The as-prepared PEGylated Cu3BiS3 NRs were used as photoacoustic imaging (PAI) and CT imaging agents due to their strong NIR absorption and large X-ray attenuation coefficient of bismuth...
October 12, 2016: Biomaterials
Berna Akıncı Özyürek, Özlem Özmen, Tuğçe Şahin Özdemirel, Yurdanur Erdoğan, Bekir Kaplan, Tuğba Kaplan
The aim of this study was to evaluate the relationship of the pre-treatment blood neutrophil/lymphocyte count ratio (NLR) with the maximum standard uptake value (SUVmax) of primary masses on positron emission tomography/computed tomography (PET/CT) taken before treatment in patients diagnosed with malignant pleural mesothelioma (MPM) and to evaluate the contribution to prognosis. A retrospective evaluation was made of 73 patients diagnosed with MPM in our hospital between January 2006 and January 2014. The SUVmax value of the primary mass on pre-treatment PET/CT, the haemogram parameters (Hb, Hct, NLR, MPV, PLT) at the time of diagnosis, the progression history, the date of the final visit and the date of death of exitus patients was recorted from patient files PET/CT...
October 21, 2016: Clinical Respiratory Journal
Wen Yea Hwong, Michiel L Bots, Sharmini Selvarajah, L Jaap Kappelle, Zariah Abdul Aziz, Norsima Nazifah Sidek, Ilonca Vaartjes
BACKGROUND: A shortage of computed tomographic (CT) machines in low and middle income countries often results in delayed CT imaging for patients suspected of a stroke. Yet, time constraint is one of the most important aspects for patients with an ischemic stroke to benefit from thrombolytic therapy. We set out to assess whether application of the Siriraj Stroke Score is able to assist physicians in prioritizing patients with a high probability of having an ischemic stroke for urgent CT imaging...
2016: PloS One
Sivan Lieberman, Tiberiu R Shulimzon, Tima Davidson, Edith M Marom
PURPOSE: The aim of the study was to assess the pulmonary temporal changes after bronchoscopic lung volume reduction (BLVR) using sealants for treatment of emphysema. MATERIALS AND METHODS: We retrospectively assessed all chest computerized tomography (CT) and F-18 fluorodeoxyglucose (FDG) positron emission tomography CT scans of patients treated at our institution with BLVR. RESULTS: Eleven patients were treated with sealants: 4 with biological sealants and 7 with synthetic sealants...
November 2016: Journal of Thoracic Imaging
W Dennis Foley, William P Shuman, Marilyn J Siegel, Dushyant V Sahani, Daniel T Boll, David N Bolus, Carlo N De Cecco, Ravi K Kaza, Desiree E Morgan, U Joseph Schoepf, Terri J Vrtiska, Benjamin M Yeh, Lincoln L Berland
This is the second of a series of 4 white papers that represent Expert Consensus Documents developed by the Society of Computed Body Tomography and Magnetic Resonance through its task force on dual-energy computed tomography. This paper, part 2, addresses radiation dose and iodine sensitivity in dual-energy computed tomography.
October 20, 2016: Journal of Computer Assisted Tomography
Loretta B Szczotka-Flynn, Sara Debanne, Beth Ann Benetz, Tawnya Wilson, Noel Brennan
PURPOSE: This study hypothesized that a traditional high-water contact lens of moderate oxygen transmissibility (Dk/t) is noninferior to common silicone hydrogel (SH) lenses worn for daily wear with respect to measures of hypoxic stress. METHODS: Thirty-six habitual contact lens wearers completed wear of three lens types worn in a randomized order: etafilcon A (ACUVUE 2, control), lotrafilcon B (Air Optix Aqua), and comfilcon A (Biofinity). Central corneal thickness (CT) and limbal hyperemia were measured >2 hr after waking and after 6 to 8 hr of wear on days 1 and 7...
October 20, 2016: Eye & Contact Lens
Kevin Kalisz, Ji Buethe, Sachin S Saboo, Suhny Abbara, Sandra Halliburton, Prabhakar Rajiah
Computed tomography is vulnerable to a wide variety of artifacts, including patient- and technique-specific artifacts, some of which are unique to imaging of the heart. Motion is the most common source of artifacts and can be caused by patient, cardiac, or respiratory motion. Cardiac motion artifacts can be reduced by decreasing the heart rate and variability and the duration of data acquisition; adjusting the placement of the data window within a cardiac cycle; performing single-heartbeat scanning; and using multisegment reconstruction, motion-correction algorithms, and electrocardiographic editing...
October 21, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Ai Ueki, Tomohisa Okuma, Shinichi Hamamoto, Yukio Miki
Purpose To evaluate survival time with concurrent, combined use of radiofrequency ablation (RFA) and one of the commonly used platinum-doublet chemotherapies (cisplatin [CDDP]/paclitaxel [PTX], CDDP/vinorelbine [VNR], CDDP/adriamycin [ADR], or CDDP/pemetrexed [MTA] combinations) by using a rabbit VX2 lung tumor model. Materials and Methods The experiment was approved by the institutional animal care committee. VX2 cells were implanted into the lungs of 60 rabbits randomized into groups treated with supportive care (control group), RFA alone, chemotherapy alone (CDDP/PTX, CDDP/VNR, CDDP/ADR, or CDDP/MTA), or a combination of RFA and chemotherapy (RFA/CDDP/PTX, RFA/CDDP/VNR, RFA/CDDP/ADR, or RFA/CDDP/MTA)...
October 21, 2016: Radiology
Guoping Li, Pengfei Hao, Junju Shen, Tanlai Yu, Huihui Li, Yunlong Fu
Matched with 3,5-bis(pyridine-2-yl)-1,2,4-triazole (2-bpt), a new electron donor-acceptor-based chlorobismuthate(III) hybrid, [2-bpt]2[Bi2Cl10(H2O)]·5H2O was prepared solvothermally and characterized. The title compound (hydrated form) and its dehydrated form exhibit photo- and thermo-induced intermolecular electron transfer (ET), which correspond to dual ET photo/thermochromism for hydrated form, charge transfer thermochromism during dehydration, and simultaneously photoluminescent responses, respectively...
October 21, 2016: Inorganic Chemistry
Colin G Murphy, Michel P Bonnin, Antoine H Desbiolles, Yannick Carrillon, Tarik Aїt Si Selmi
BACKGROUND: Varus inclination of the uncemented stem is not necessarily a technical error. The proximal femoral anatomy of hips with a coxa vara deformity frequently predisposes varus inclination. METHODS: We reviewed a series of 200 patients undergoing primary uncemented THA with the Corail® hip system. Preoperative data were based on patient demographics, diagnosis, and radiographic information (preoperative templating-CT measurements), and compared postoperative alignment for each stem and type of stem used...
October 15, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Vimarsha G Swami, Lei Liu, Myles Mabee, Jacob L Jaremko
PURPOSE: Indices from 3-D ultrasound may have a role in developmental dysplasia of the hip (DDH) assessment, but require a way to determine spatial orientation relative to body axes. The lateral iliac wall angle is a potentially suitable reference axis in 3-D ultrasound. We sought to quantify normal values and variations of the infant iliac wall angle on radiography, and compare with computed tomography (CT). METHODS: Acetabular and lateral iliac angles were measured on frontal pelvic radiographs of 200 patients (400 hips, 183 with DDH) and coronal CT of 20 patients (40 hips) aged 0-12 months...
October 15, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Carolina Rodriguez-Tirado, Takanori Kitamura, Yu Kato, Jeffery W Pollard, John S Condeelis, David Entenberg
Metastasis to secondary sites such as the lung, liver and bone is a traumatic event with a mortality rate of approximately 90% (1). Of these sites, the lung is the most difficult to assess using intravital optical imaging due to its enclosed position within the body, delicate nature and vital role in sustaining proper physiology. While clinical modalities (positron emission tomography (PET), magnetic resonance imaging (MRI) and computed tomography (CT)) are capable of providing noninvasive images of this tissue, they lack the resolution necessary to visualize the earliest seeding events, with a single pixel consisting of nearly a thousand cells...
October 6, 2016: Journal of Visualized Experiments: JoVE
Russell Byrum, Lauren Keith, Christopher Bartos, Marisa St Claire, Matthew G Lackemeyer, Michael R Holbrook, Krisztina Janosko, Jason Barr, Daniela Pusl, Laura Bollinger, Jiro Wada, Linda Coe, Lisa E Hensley, Peter B Jahrling, Jens H Kuhn, Margaret R Lentz
Medical imaging using animal models for human diseases has been utilized for decades; however, until recently, medical imaging of diseases induced by high-consequence pathogens has not been possible. In 2014, the National Institutes of Health, National Institute of Allergy and Infectious Diseases, Integrated Research Facility at Fort Detrick opened an Animal Biosafety Level 4 (ABSL-4) facility to assess the clinical course and pathology of infectious diseases in experimentally infected animals. Multiple imaging modalities including computed tomography (CT), magnetic resonance imaging, positron emission tomography, and single photon emission computed tomography are available to researchers for these evaluations...
October 3, 2016: Journal of Visualized Experiments: JoVE
Riccardo Galli, Maria C Sighinolfi, Salvatore Micali, Eugenio Martorana, Marco Rosa, Alessando Mofferdin, Giampaolo Bianchi
BACKGROUND: Shock Wave Lithotripsy (SWL) for distal ureteral stones can be performed in prone or supine position. Our aim is to demonstrate the advantage of the supine transgluteal SWL approach for distal ureteral stones treatment using a real times ultrasound (US) focusing and to show how the Computerized Tomography (CT) scan parameters may be related to the outcomes. METHODS: We performed 70 consecutive supine transgluteal SWL of distal ureteral stones. All patients had a pre-treatment CT scan...
October 21, 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
Yongxia Zhao, Yanmin Wu, Ziwei Zuo, Hongna Suo, Sisi Zhao, Jun Han, Xian Chang, Shujie Cheng
OBJECTIVE: To investigate the effect of low-concentration contrast medium on spectral computed tomography (CT) image quality for portal venography CT. METHODS: 150 patients with suspected portal diseases were divided into three groups and had spectral CT examination using a GE Discovery CT 750 HD scanner. The patients in three groups were injected with different concentrations of iodine (350 mgI/mL, 315 mgI/mL and 280 mgI/mL) at an injection rate of 4.0-5...
October 21, 2016: Journal of X-ray Science and Technology
Nadia Mohd Effendy, Mohd Fadhli Khamis, Ahmad Nazrun Shuid
BACKGOUND: Labisia pumila (LP) is a popular herb used by women over the past few decades. This herb has shown potentials as an alternative agent for treatment and prevention of postmenopausal osteoporosis. It was observed in previous studies that supplementation to ovariectomized rats were associated with increased bone antioxidative enzymes and reduced lipid peroxidation activity. It had also improved bone formation markers in ovariectomized rats. This study aimed to evaluate the effects of giving different forms of LP extracts on the trabecular bone microarchitecture of ovariectomised rats...
October 21, 2016: Journal of X-ray Science and Technology
Frank J Wolters, Daniel Bos, Meike W Vernooij, Oscar H Franco, Albert Hofman, Peter J Koudstaal, Aad van der Lugt, M Arfan Ikram
The association of aortic valve calcification (AVC) with dementia remains unknown. In 2,428 non-demented participants from the population-based Rotterdam Study, we investigated the association of CT-assessed AVC with risk of dementia and cognitive decline. AVC was present in 33.1% of the population. During a median follow-up of 9.3 years, 160 participants developed dementia. We found no association between presence of AVC and risk of all-cause dementia [hazard ratio (HR): 0.89 (95% confidence interval (CI):0...
October 20, 2016: Journal of Alzheimer's Disease: JAD
Masaki Matsushita, Kenichi Mishima, Ryusaku Esaki, Naoki Ishiguro, Kinji Ohno, Hiroshi Kitoh
OBJECTIVE Achondroplasia (ACH) is the most common short-limbed skeletal dysplasia caused by gain-of-function mutations in the fibroblast growth factor receptor 3 (FGFR3) gene. Foramen magnum stenosis (FMS) is one of the serious neurological complications in ACH. Through comprehensive drug screening, the authors identified that meclozine, an over-the-counter drug for motion sickness, inhibited activation of FGFR3 signaling. Oral administration of meclozine to the growing ACH mice promoted longitudinal bone growth, but it did not prevent FMS...
October 21, 2016: Journal of Neurosurgery. Pediatrics
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