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https://www.readbyqxmd.com/read/28338536/dual-energy-computed-tomography-for-the-evaluation-of-enhancement-of-pulmonary-nodules%C3%A2-3-cm-in-size
#1
Michael J Reiter, Weston T Winkler, Kenton E Kagy, Ryan B Schwope, Christopher J Lisanti
PURPOSE: The aim of the study was to compare the accuracies of 4 different methods of assessing pulmonary nodule enhancement to distinguish benign from malignant solid pulmonary nodules using nondynamic contrast-enhanced dual-energy computed tomography. MATERIALS AND METHODS: Seventy-two patients (mean age, 62 y) underwent dual-energy chest computed tomography 3 minutes after intravenous contrast administration. Each of 118 pulmonary nodules (9±5.9 mm) were evaluated for enhancement by 4 methods: visual assessment, 3-dimensional automated postprocessing measurement tool, manually drawn region of interest with calculated iodine-related attenuation, and measurement of iodine concentration...
March 22, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28338317/kinetics-and-mechanism-of-the-oxidation-of-thiourea-dioxide-by-iodine-in-a-slightly-acidic-medium
#2
Li Xu, László Valkai, Alena A Kuznetsova, Sergei V Makarov, Attila K Horváth
The thiourea dioxide (TDO)-iodine reaction was investigated spectrophotometrically monitoring the consumption of total amount of iodine at 468 nm, at T = 25.0 ± 0.1 °C, and at 0.5 M ionic strength in buffered slightly acidic medium. The nitrogen- and carbon-containing products were found to be ammonium ion and dissolved carbon dioxide, respectively, while from sulfur part sulfate ion was exclusively detected, when fresh TDO solution was used. The stoichiometry of the reaction was established as 2I2 + TDO + 4H2O → SO4(2-) + 2NH4(+) + 4I(-) + CO2 + 4H(+) indicating a strict 2:1 stoichiometric ratio...
March 24, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28338234/extent-of-surgery-did-not-affect-recurrence-during-7-years-follow-up-in-papillary-thyroid-cancer-sized-1-4-cm-preliminary-results
#3
Min Joo Kim, Myung-Chul Lee, Guk Haeng Lee, Hoon Sung Choi, Sun Wook Cho, Su-Jin Kim, Kyu Eun Lee, Young Joo Park, Do Joon Park
OBJECTIVE: There is debate whether hemithyroidectomy is sufficient for patients with papillary thyroid cancer (PTC) sized 1-4 cm. Therefore, we investigated whether hemithyroidectomy affects recurrence rate compared with thyroidectomy in patients with PTC sized 1-4 cm. DESIGN: Retrospective observational study. PATIENTS: We included 147 patients with 1-4 cm PTC who underwent hemithyroidectomy between 2004 and 2008. They were matched with 298 patients who underwent thyroidectomy, comparing age, sex, tumor size, multiplicity, and extrathyroidal extension status, and lymph node (LN) metastasis status...
March 24, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28338166/-preoperative-assessment-value-of-spectral-ct-quantitative-parameters-in-lymph-node-metastasis-of-gastric-cancer
#4
Yaru Chai, Jianbo Gao, Jingjing Xing, Peijie Lyu, Pan Liang, Xiaohua Chen
OBJECTIVE: To investigate the preoperative assessment value of spectral CT quantitative parameters in lymph node metastasis of gastric cancer. METHODS: From December 2013 to June 2015, clinical and image data of 86 patients with gastric cancer confirmed by gastroscope pathology undergoing preoperative enhanced CT were prospectively collected. Enhanced CT included nonenhanced CT of conventional 120 kVp mode, arterial phase (AP) and venous phase (VP) with GSI mode on Discover GSI CT scanner...
March 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28337989/post-hoc-study-intravenous-hydration-treatment-in-chinese-patients-with-high-risk-of-contrast-induced-nephropathy-following-percutaneous-coronary-intervention
#5
Weijie Bei, Hualong Li, Kaiyang Lin, Kun Wang, Shiqun Chen, Xiaosheng Guo, Yong Liu, Ning Tan, Jiyan Chen
Contrast-induced nephropathy (CIN) develops after the injection of iodinated contrast media. This is a post hoc analysis of the data obtained from the TRUST study, which was a prospective, multicentre, observational study conducted to evaluate the safety and tolerability of the contrast medium iopromide in patients undergoing cardiac catheterization from August 2010 to September 2011 in China, conducted to explore the current status, trends and risk predictors of hydration treatment. The status of hydration to prevent CIN in each patient was recorded...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337546/robotic-thyroidectomy-versus-conventional-open-thyroidectomy-for-thyroid-cancer-a-systematic-review-and-meta-analysis
#6
Jing-Hua Pan, Hong Zhou, Xiao-Xu Zhao, Hui Ding, Li Wei, Li Qin, Yun-Long Pan
BACKGROUND: Despite the new technical alternative offered by the robotic surgery for minimally invasive thyroid surgery, the role of the robotic thyroidectomy (RT) in thyroid cancer has been highly disputed. This paper gives a systematic review and meta-analysis aiming to compare RT and open thyroidectomy (OT) based on the surgical outcomes and oncologic results. METHODS: Relevant literature was searched from various databases up to July 2016, including PubMed, MEDLINE, EMBASE, Cochrane Library, Web of science and Clinical Trials...
March 23, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28336848/effects-of-iodine-doping-on-optoelectronic-and-chemical-properties-of-polyterpenol-thin-films
#7
Kateryna Bazaka, Mohan V Jacob
Owing to their amorphous, highly cross-liked nature, most plasma polymers display dielectric properties. This study investigates iodine doping as the means to tune optoelectronic properties of plasma polymer derived from a low-cost, renewable resource, i.e., Melaleuca alternifolia oil. In situ exposure of polyterpenol to vapors of electron-accepting dopant reduced the optical band gap to 1.5 eV and increased the conductivity from 5.05 × 10(-8) S/cm to 1.20 × 10(-6) S/cm. The increased conductivity may, in part, be attributed to the formation of charge-transfer complexes between the polymer chain and halogen, which act as a cation and anion, respectively...
January 13, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28335429/the-adverse-effect-of-hypertension-in-the-treatment-of-thyroid-cancer-with-multi-kinase-inhibitors
#8
REVIEW
Ole Vincent Ancker, Markus Wehland, Johann Bauer, Manfred Infanger, Daniela Grimm
The treatment of thyroid cancer has promising prospects, mostly through the use of surgical or radioactive iodine therapy. However, some thyroid cancers, such as progressive radioactive iodine-refractory differentiated thyroid carcinoma, are not remediable with conventional types of treatment. In these cases, a treatment regimen with multi-kinase inhibitors is advisable. Unfortunately, clinical trials have shown a large number of patients, treated with multi-kinase inhibitors, being adversely affected by hypertension...
March 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28334455/ceric-cyclopentadienides-bearing-alkoxy-aryloxy-chlorido-or-iodido-co-ligands
#9
Reiner Anwander, David Schneider, Frank Edelmann, Nicole Harmgarth
A series of heteroleptic tris(cyclopentadienyl) CeIV complexes has been isolated and crystallographically characterized, implying a broad accessibility of such organocerium(IV) compounds. The oxidation of complexes CpMe3Ce(thf) and Cp'3Ce(thf) (CpMe = C5H4Me, Cp' = C5H4SiMe3), bearing monosubstituted electron-poor cyclopentadienyl ligands, with either 0.5 equiv. 1,4-benzoquinone or C2Cl6 gave the cerium(IV) hydroquinolate and chloride complexes CpMe3Ce(OC6H4O)CeCpMe3, Cp'3Ce(OC6H4O)CeCp'3, as well as CpMe3CeCl and Cp'3CeCl, respectively...
March 23, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28333766/dietary-inadequacies-in-hiv-infected-and-uninfected-school-aged-children-in-johannesburg-south-africa
#10
Stephanie Shiau, Acadia Webber, Renate Strehlau, Faeezah Patel, Ashraf Coovadia, Samantha Kozakowski, Susan Brodlie, Michael T Yin, Louise Kuhn, Stephen M Arpadi
OBJECTIVES: The World Health Organization (WHO) recommends that HIV-infected children increase energy intake and maintain a balanced macronutrient distribution for optimal growth and nutrition. Few studies have evaluated dietary intake of HIV-infected children in resource-limited settings. METHODS: We conducted a cross-sectional analysis of the dietary intake of 220 perinatally HIV-infected children and 220 HIV-uninfected controls ages 5-9 years in Johannesburg, South Africa...
March 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28333271/impact-of-thyroid-autoimmunity-in-euthyroid-women-on-live-birth-rate-after-iui
#11
D Unuane, B Velkeniers, B Bravenboer, P Drakopoulos, H Tournaye, J Parra, M De Brucker
STUDY QUESTION: Does thyroid autoimmunity (TAI) predict live birth rate in euthyroid women after one treatment cycle in IUI patients? SUMMARY ANSWER: TAI as such does not influence pregnancy outcome after IUI treatment. WHAT IS KNOWN ALREADY: The role of TAI on pregnancy outcome in the case of IVF/ICSI is largely debated in the literature. This is the first study to address this issue in the case of IUI. STUDY DESIGN, SIZE, DURATION: This was a retrospective cohort study...
February 23, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28332879/iodine-content-of-enteral-and-parenteral-nutrition-solutions
#12
Devina L Willard, Lorraine S Young, Xuemei He, Lewis E Braverman, Elizabeth N Pearce
BACKGROUND: Iodine is essential for thyroid hormone synthesis, and iodine deficiency may result in thyroid disorders including goiter and hypothyroidism. Patients on long-term enteral nutrition (EN) or parenteral nutrition (PN) may be at risk for micronutrient deficiencies. The recommended daily allowance for iodine intake is 150 μg for nonpregnant adults. However, there is no current consensus among scientific societies regarding the quantity of iodine to be added in adult EN and PN formulations...
March 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28332593/injections-through-skin-colonized-with-staphylococcus-aureus-biofilm-introduce-contamination-despite-standard-antimicrobial-preparation-procedures
#13
Yi Wang, Valery Leng, Viraj Patel, K Scott Phillips
While surgical site preparation has been extensively studied, there is little information about resistance of skin microbiota in the biofilm form to antimicrobial decontamination, and there are no quantitative models to study how biofilm might be transferred into sterile tissue/implant materials during injections for joint spine and tendon, aspiration biopsies and dermal fillers (DF). In this work, we develop two in vitro models to simulate the process of skin preparation and DF injection using pig skin and SimSkin (silicone) materials, respectively...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332211/a-multi-channel-block-matching-denoising-algorithm-for-spectral-photon-counting-ct-images
#14
Adam P Harrison, Ziyue Xu, David A Bluemke, Amir Pourmorteza, Daniel J Mollura
PURPOSE: We present a denoising algorithm designed for a whole-body prototype photon-counting computed tomography (PCCT) scanner with up to 4 energy thresholds and associated energy-binned images. METHODS: Spectral PCCT images can exhibit low signal to noise ratios (SNRs) due to the limited photon counts in each simultaneously-acquired energy bin. To help address this, our denoising method exploits the correlation and exact alignment between energy bins, adapting the highly-effective block-matching 3D (BM3D) denoising algorithm for PCCT...
March 23, 2017: Medical Physics
https://www.readbyqxmd.com/read/28331628/association-of-iodized-salt-with-goiter-prevalence-in-chinese-populations-a-continuity-analysis-over-time
#15
Zhen Liang, Chen Xu, Yong-Jun Luo
BACKGROUND: Iodine deficiency disorders (IDD) refer to diseases that are caused by insufficient iodine intake, and the best strategy to prevent IDD is the addition of iodine to dietary salt. Because iodine deficiency is a common cause of goiter, the prevalence as effectively controlled after the implementation of universal salt iodization (USI) in China. However, there is substantial controversy as to whether the incidence of thyroid disorders is related to iodized salt intake. Therefore, we aimed to clarify whether the risk of goiter can be promoted by USI...
2017: Military Medical Research
https://www.readbyqxmd.com/read/28330547/-ectopic-thyroid-tissue-with-a-primary-carcinoma
#16
Pernille Hammershøj Jensen, Anette Pedersen Pilt, Hans-Erik Wittendorff
Ectopic thyroid tissue is a result of abnormal embryologic development and migration of the thyroid gland. It has a prevalence of one per 100,000-300,000, and the risk of malignant transformation in ectopic thyroid tissue is rare. We present a rare case of perivesical ectopic papillary thyroid carcinoma in a 76-year-old man with a normal orthotopic thyroid gland. A total thyroidectomy was performed, and the pathology report showed normal thyroid tissue with no neoplastic involvement. The patient was treated with radioactive iodine, and a control scintigraphy was without any signs of activity...
March 20, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28328929/urinary-iodine-concentration-uic-could-be-a-promising-biomarker-for-predicting-goiter-among-school-age-children-a-systematic-review-and-meta-analysis
#17
Linlin Xiu, Gansheng Zhong, Xueman Ma
OBJECTIVES: To evaluate whether urinary iodine concentration (UIC) can predict goiter among school-age children, and to assess the association between UIC and goiter prevalence. METHODS: We searched the MEDLINE, EMBASE, Cochrane Library (Cochrane Database of Systematic Reviews), Web of Science, CNKI, VIP, and Wan Fang databases for relevant reports in both English and Chinese up to August 25, 2016. The mean differences (MD) and 95% confidence intervals (CI) were calculated for the UIC and goiter prevalence assessments...
2017: PloS One
https://www.readbyqxmd.com/read/28328726/clinical-outcomes-and-contact-lens-case-contamination-using-a-povidone-iodine-disinfection-system
#18
Jacqueline Tan, Ananya Datta, Katherine Wong, Mark D P Willcox, Ajay K Vijay
OBJECTIVE: To assess the incidence of adverse events during the use of a povidone-iodine disinfecting solution (cleadew) and the microbial contamination in contact lens cases. METHODS: A prospective, single-center, open-label, controlled study evaluating the use of cleadew cleaning and disinfecting system in existing daily wear soft contact lens wearers over a 3-month period was conducted. Ocular signs and symptoms during lens wear were assessed at baseline and after 1 and 3 months of using cleadew...
March 21, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28327837/-ioduria-and-iodine-concentration-in-table-salt-in-peruvian-elementary-schoolchildren
#19
Carolina Tarqui-Mamani, Doris Alvarez-Dongo, Inés Fernández-Tinco
Objectives: To determine the ioduria and iodine concentration in table salt in Peruvian elementary schoolchildren. Materials and methods: A cross-sectional study was performed. A total of 8,023 elementary schoolchildren, who voluntarily participated, were included. Multistage stratified probability sampling was performed, and the sample was obtained by systematic selection. Ioduria was determined via spectrophotometry (Sandell-Kolthoff method), and the amount of iodine in salt was evaluated volumetrically...
October 2016: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/28326997/removal-of-phenol-by-powdered-activated-carbon-prepared-by-residue-extracted-from-coal-gasification-tar-residue
#20
Jun Shen, Xiong-Lei Wang, Yan-Xia Niu, Yu-Gao Wang, Gang Liu, Qing-Tao Sheng
coal gasification tar residue (CGTR) is a kind of environmentally hazardous by-product generated in fixed-bed coal gasification process. The extracted CGTR by ethyl acetate was used to prepare powdered activated carbon (PAC) and applied for phenol adsorption. The results showed that the prepared PAC under the optimum conditions had enormous mesoporous structure, and the iodine number reached 2030.11 mg/g, with specific surface area of 1981 m(2)/g and total pore volume of 0.92 ml/g. Especially, without loading other substances the PAC had a strong magnetic, easy to be separated after adsorbing phenol...
March 22, 2017: Environmental Technology
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