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https://www.readbyqxmd.com/read/29223059/a-highly-selective-fluorescence-sensing-platform-for-nanomolar-hg-ii-detection-based-on-cytosine-derived-quantum-dot
#1
Liang Luo, Ting Song, Haoqiang Wang, Qunhui Yuan, Shenghai Zhou
Inspired by low toxicity and good biocompatibility of biomass derived quantum dot (QD), we herein developed a cytosine derived quantum dot, namely cyt-dot, via a one-step hydrothermal synthesis. The as-prepared cyt-dot emits blue fluorescence (FL) containing abundant oxygen (20.6at.%) and nitrogen (24.1at.%) contents. The cyt-dot based sensing platform shows exclusive selectivity for Hg(II) while being insensitive towards Fe(III) and Ag(I), which are important interference that usually cannot be ruled out. The detection limit for Hg(II) is of 11nM, which is very close to the guideline value of 10nM allowed by the U...
November 22, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29222585/-extranodal-abdominal-lymphomas
#2
REVIEW
T F Weber, S Dietrich, J Nattenmüller
BACKGROUND: Extranodal manifestations occur in up to 40% of non-Hodgkin lymphomas. The prevalence of extranodal involvement has increased. OBJECTIVES: A comprehensive overview on lymphoma involvement in the parenchymatous abdominal organs, the gastrointestinal tract, and the peritoneal cavity under due consideration of clinical implications is given. MATERIALS AND METHODS: A selective literature search with analysis of dedicated original research articles and reviews was carried out...
December 8, 2017: Der Radiologe
https://www.readbyqxmd.com/read/29222120/targeting-cardiovascular-implant-infection-multimodality-and-molecular-imaging
#3
Jan M Sohns, Udo Bavendiek, Tobias L Ross, Frank M Bengel
Owing to their success in clinical practice, the prevalence of cardiovascular implants is continuously increasing. Implant infection is a relevant complication but remains a diagnostic challenge because echocardiography as a first-line test may be limited. Accordingly, a multimodality approach is increasingly used for diagnostic workup and supported by recent guidelines. As reviewed here, computed tomography and nuclear imaging provide incremental diagnostic value and may be combined in a single hybrid imaging session using positron emission tomography/computed tomography or single photon emission computed tomography/computed tomography...
December 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29221618/commentary-to-urinary-tract-infection-in-children-diagnosis-treatment-imaging-comparison-of-current-guidelines
#4
Michael Erlano Chua, Martin A Koyle
No abstract text is available yet for this article.
November 16, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29221286/automatic-lung-rads%C3%A2-classification-with-a-natural-language-processing-system
#5
Sebastian E Beyer, Brady J McKee, Shawn M Regis, Andrea B McKee, Sebastian Flacke, Gilan El Saadawi, Christoph Wald
Background: Our aim was to train a natural language processing (NLP) algorithm to capture imaging characteristics of lung nodules reported in a structured CT report and suggest the applicable Lung-RADS™ (LR) category. Methods: Our study included structured, clinical reports of consecutive CT lung screening (CTLS) exams performed from 08/2014 to 08/2015 at an ACR accredited Lung Cancer Screening Center. All patients screened were at high-risk for lung cancer according to the NCCN Guidelines®...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29218397/can-we-better-predict-the-biologic-behavior-of-incidental-ipmn-a-comprehensive-analysis-of-molecular-diagnostics-and-biomarkers-in-intraductal-papillary-mucinous-neoplasms-of-the-pancreas
#6
Kiara A Tulla, Ajay V Maker
PURPOSE: Predicting the biologic behavior of intraductal papillary mucinous neoplasm (IPMN) remains challenging. Current guidelines utilize patient symptoms and imaging characteristics to determine appropriate surgical candidates. However, the majority of resected cysts remain low-risk lesions, many of which may be feasible to have under surveillance. We herein characterize the most promising and up-to-date molecular diagnostics in order to identify optimal components of a molecular signature to distinguish levels of IPMN dysplasia...
December 7, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/29217634/anthracycline-cardiotoxicity-an-update-on-mechanisms-monitoring-and-prevention
#7
REVIEW
Peter A Henriksen
Anthracycline chemotherapy causes dose-related cardiomyocyte injury and death leading to left ventricular dysfunction. Clinical heart failure may ensue in up to 5% of high-risk patients. Improved cancer survival together with better awareness of the late effects of cardiotoxicity has led to growing recognition of the need for surveillance of anthracycline-treated cancer survivors with early intervention to treat or prevent heart failure. The main mechanism of anthracycline cardiotoxicity is now thought to be through inhibition of topoisomerase 2β resulting in activation of cell death pathways and inhibition of mitochondrial biogenesis...
December 7, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29214611/coronary-risk-equivalence-of-diabetes-assessed-by-spect-mpi
#8
Donna Chelle V Morales, Sanjeev P Bhavnani, Alan W Ahlberg, Raja C Pullatt, Deborah M Katten, Donna M Polk, Gary V Heller
BACKGROUND: Several publications and guidelines designate diabetes mellitus (DM) as a coronary artery disease (CAD) risk equivalent. The aim of this investigation was to examine DM cardiac risk equivalence from the perspective of stress SPECT myocardial perfusion imaging (MPI). METHODS AND RESULTS: We examined cardiovascular outcomes (cardiac death or nonfatal MI) of 17,499 patients referred for stress SPECT-MPI. Patients were stratified into four categories: non-DM without CAD, non-DM with CAD, DM without CAD, and DM with CAD, and normal or abnormal perfusion...
December 6, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29214373/utilization-of-breast-cancer-screening-with-magnetic-resonance-imaging-in-community-practice
#9
Deirdre A Hill, Jennifer S Haas, Robert Wellman, Rebecca A Hubbard, Christoph I Lee, Jennifer Alford-Teaster, Karen J Wernli, Louise M Henderson, Natasha K Stout, Anna N A Tosteson, Karla Kerlikowske, Tracy Onega
BACKGROUND: Breast cancer screening with magnetic resonance imaging (MRI) may be a useful adjunct to screening mammography in high-risk women, but MRI uptake may be increasing rapidly among low- and average-risk women for whom benefits are unestablished. Comparatively little is known about use of screening MRI in community practice. OBJECTIVE: To assess relative utilization of MRI among women who do and do not meet professional society guidelines for supplemental screening, and describe utilization according to breast cancer risk indications...
December 6, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/29214153/alzheimer-s-disease-diagnosis-discrepancy-between-clinical-neuroimaging-and-cerebrospinal-fluid-biomarkers-criteria-in-an-italian-cohort-of-geriatric-outpatients-a-retrospective-cross-sectional-study
#10
Giulia A M Dolci, Sarah Damanti, Valeria Scortichini, Alessandro Galli, Paolo D Rossi, Carlo Abbate, Beatrice Arosio, Daniela Mari, Andrea Arighi, Giorgio G Fumagalli, Elio Scarpini, Silvia Inglese, Maura Marcucci
Background: The role of cerebrospinal fluid (CSF) biomarkers, and neuroimaging in the diagnostic process of Alzheimer's disease (AD) is not clear, in particular in the older patients. Objective: The aim of this study was to compare the clinical diagnosis of AD with CSF biomarkers and with cerebrovascular damage at neuroimaging in a cohort of geriatric patients. Methods: Retrospective analysis of medical records of ≥65-year-old patients with cognitive impairment referred to an Italian geriatric outpatient clinic, for whom the CSF concentration of amyloid-β (Aβ), total Tau (Tau), and phosphorylated Tau (p-Tau) was available...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29210722/point-of-care-ultrasound-in-the-periarrest-setting-lessons-learned-a-case-report
#11
Peter Juhl-Olsen, Rasmus Aagaard, Anni Nørgaard Jeppesen
Point-of-care ultrasound may elucidate reversible causes of cardiac arrest, and its use is supported by international guidelines in the periarrest setting. We present a case in which the treatment of cardiac arrest caused tension pneumothoraces and cardiac tamponade by pneumopericardium. Both pneumothorax and tamponade were expected to be identified with ultrasound, but were not. Subcutaneous emphysema precluded the diagnosis of pneumothorax. Cardiac imaging was false negative for tamponade, because the latter was caused by air and not fluid...
November 27, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/29207224/-bone-biopsy-in-the-chronic-kidney-disease-ckd
#12
REVIEW
Luca Dalle Carbonare, Maria Teresa Valenti
Histomorphometry or quantitative histology is the analysis on histologic sections of bone resorption, formation and structure parameters. It is the only technique allowing a dynamic evaluation of osteoblast activity after labelling with tetracycline. In addition, the use of computed image analyzer allows the possibility to assess bone microarchitecture. Histomorphometric bone biopsy is a reliable and well-tolerated procedure. Bone samples are taken at iliac crest level under local anesthesia and sedation. Samples are put into methyl-metacrilate resin where the sections are prepared for the microscopic analysis of different histomorphometric parameters...
December 5, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/29206942/understanding-decision-making-in-cardiac-imaging-determinants-of-appropriate-use
#13
Ricardo Fonseca, Kim Jose, Thomas H Marwick
Aims: Appropriate Use Criteria (AUC) for echocardiography were developed in 2007 to facilitate decision-making, reduce variability in test utilization, and encourage rational use of imaging. However, there is little evidence that the AUC have favourably influenced ordering behaviour. This study explores the factors that contribute to clinicians requesting echocardiograms with a focus on appropriate use. Methods and results: Semi-structured face-to-face interviews with cardiologists and non-cardiologists who had requested echocardiograms were conducted at an Australian tertiary hospital...
November 30, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29206790/aspirin-for-prophylaxis-against-venous-thromboembolism-after-orthopaedic-oncologic-surgery
#14
Gregory M Mendez, Yash M Patel, Daniel A Ricketti, John P Gaughan, Richard D Lackman, Tae Won B Kim
BACKGROUND: Patients who undergo orthopaedic oncologic surgical procedures are at increased risk of developing a venous thromboembolism (VTE). Guidelines from surgical societies are shifting to include aspirin as a postoperative VTE prophylactic agent. The purpose of this study was to review our experience using aspirin as postoperative VTE prophylaxis for orthopaedic oncologic surgical procedures. METHODS: This study was a retrospective review of patients diagnosed with a primary malignant soft-tissue or bone tumor or metastatic carcinoma...
December 6, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29205456/automated-production-of-18-f-ftha-according-to-gmp
#15
Nina Savisto, Tapio Viljanen, Esa Kokkomäki, Jörgen Bergman, Olof Solin
14-(R,S)-[18 F]fluoro-6-thia-heptadecanoic acid is a tracer for fatty acid imaging by positron emission tomography. High demand for this tracer required us to replace semi-automatic synthesis with a fully automated procedure. An automated synthesis device was constructed in-house for multistep nucleophilic 18 F-fluorination and a control system was developed. The synthesis device was combined with a sterile filtration unit and both were qualified. 14-(R,S)-[18 F]fluoro-6-thia-heptadecanoic acid was produced according to good manufacturing practice guidelines set by the European Union...
December 4, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29203433/management-of-soft-tissue-tumors-of-the-musculoskeletal-system
#16
REVIEW
A Rochwerger, J C Mattei
A palpable mass in the musculoskeletal system is a common reason for consultation. The main issue is that a malignant tumor must not be missed. Inappropriate initial treatment can have direct consequences on the risk of local recurrence, the patient's future function and life expectancy. A mass more than 5cm in diameter, a subfascial location and a recent increase in size are signs that should lead the physician to question whether the lesion is truly benign and to carry out diagnostic examinations. MRI is the gold standard imaging exam...
December 1, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29202504/computed-tomographic-analysis-of-ventral-atlantoaxial-optimal-safe-implantation-corridors-in-27-dogs
#17
Guillaume Leblond, Luis Gaitero, Noel M M Moens, Alex Zur Linden, Fiona M K James, Gabrielle J Monteith, John Runciman
Objectives Ventral atlantoaxial stabilization techniques are challenging surgical procedures in dogs. Available surgical guidelines are based upon subjective anatomical landmarks, and limited radiographic and computed tomographic data. The aims of this study were (1) to provide detailed anatomical descriptions of atlantoaxial optimal safe implantation corridors to generate objective recommendations for optimal implant placements and (2) to compare anatomical data obtained in non-affected Toy breed dogs, affected Toy breed dogs suffering from atlantoaxial instability and non-affected Beagle dogs...
November 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29202492/subtyping-of-patients-with-primary-aldosteronism-an-update
#18
Jacques W M Lenders, Graeme Eisenhofer, Martin Reincke
Primary aldosteronism (PA) comprises two main subtypes: unilateral aldosteronism, mainly caused by aldosterone-producing adenoma; and bilateral adrenal hyperplasia. Establishing the correct subtype in patients with PA is indispensible for choice of treatment. In addition to established methods, alternative tests are evolving for subtyping. Computed tomography (CT) and adrenal venous sampling (AVS) are currently recommended in the guidelines for the diagnostic work-up of patients with PA. CT cannot be used as a stand-alone test for subtyping because of its limited accuracy but may be used in combination with other tests such as AVS or functional imaging...
December 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29202376/circadian-rhythm-in-idiopathic-normal-pressure-hydrocephalus
#19
Andreas Eleftheriou, Martin Ulander, Fredrik Lundin
OBJECTIVES: The pathogenesis of idiopathic normal pressure hydrocephalus (iNPH) takes place in structures close to the cerebral ventricular system. Suprachiasmatic nucleus (SCN), situated close to the third ventricle, is involved in circadian rhythm. Diurnal disturbances are well-known in demented patients. The cognitive decline in iNPH is potentially reversible after a shunt operation. Diurnal rhythm has never been studied in iNPH. We hypothesize that there is a disturbance of circadian rhythm in iNPH-patients and the aim was to study any changes of the diurnal rhythm (mesor and circadian period) as well as any changes of the diurnal amplitude and acrophase of the activity in iNPH-patients before and after a shunt operation...
November 29, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29200864/efficacy-of-noninvasive-cardiac-imaging-tests-in-diagnosis-and-management-of-stable-coronary-artery-disease
#20
REVIEW
Ify R Mordi, Athar A Badar, R John Irving, Jonathan R Weir-McCall, J Graeme Houston, Chim C Lang
The aim of this review was to discuss the current literature regarding the utility of noninvasive imaging in diagnosis and management of stable coronary artery disease (CAD) including recent data from large randomized trials assessing diagnosis and prognosis. Current guidelines recommend revascularization in patients with refractory angina and in those with potential prognostic benefit. Appropriate risk stratification through noninvasive assessment is important in ensuring patients are not exposed to unnecessary invasive coronary angiograms...
2017: Vascular Health and Risk Management
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