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https://www.readbyqxmd.com/read/28231638/comparison-of-the-shock-absorption-capacities-of-different-mouthguards
#1
Melina Simonetta Bochnig, Min-Jung Oh, Theresa Nagel, Fred Ziegler, Paul-Georg Jost-Brinkmann
BACKGROUND/AIMS: In this in vitro study the protective qualities of different mouthguard types were examined during small hard object collisions. The aim was to investigate inconclusive aspects of hard inserts, nylon nets and air spaces as reinforcements in the anterior region and the protection qualities of ethylene vinyl acetate (EVA). MATERIALS AND METHODS: Five different mouthguards with a labial thickness between 2 mm and 11 mm made of materials of varying stiffness were investigated...
February 23, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28231577/response-evaluation-in-head-and-neck-oncology-definition-and-prediction
#2
T K Hoffmann, P J Schuler, S Laban, R Grässlin, M Beer, A J Beer, U Friebe-Hoffmann, L Bullinger, P Möller, T Wiegel
Curative treatment of head and neck squamous cell carcinoma includes surgery and/or (chemo)radiation, whereas in the palliative setting, chemotherapy and/or immunotherapy represent(s) the standard approach. With regard to quality control, methods for determining treatment response are sorely needed. For surgical therapy, histopathology is the standard quality control. Established criteria for high-risk patients include resection margins of the primary tumor and extracapsular extension of lymph node metastases...
February 24, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28231117/compositional-analysis-of-whole-grains-processed-grains-grain-co-products-and-other-carbohydrate-sources-with-applicability-to-pet-animal-nutrition
#3
Alison N Beloshapka, Preston R Buff, George C Fahey, Kelly S Swanson
Our objective was to measure the proximate, starch, amino acid, and mineral compositions of grains, grain co-products, and other carbohydrate sources with potential use in pet foods. Thirty-two samples from barley (barley flake, cut barley, ground pearled barley, malted barley, whole pearled barley, pearled barley flakes, and steamed rolled barley); oats (groats, ground oatmeal, ground steamed groats, instant oats, oat bran, oat fiber, oat flour, quick oats, regular rolled oats, steamed rolled oat groats, and steel cut groats); rice (brown rice, polished rice, defatted rice bran, and rice flour); and miscellaneous carbohydrate sources (canary grass seed, hulled millet, whole millet, quinoa, organic spelt hull pellets, potato flake, sorghum, whole wheat, and whole yellow corn) were analyzed...
March 25, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230714/assessment-of-skeletal-tumour-burden-on-18f-naf-pet-ct-using-a-new-quantitative-method
#4
Paula Lapa, Margarida Marques, Gracinda Costa, Andrei Iagaru, João Pedroso de Lima
PURPOSE: The purpose of this study was to test a method of quantifying skeletal tumour burden with F-NaF PET/CT. PATIENTS AND METHODS: We retrospectively reviewed the charts of 117 patients who underwent F-NaF PET/CT for the detection of bone metastases, 68 women and 49 men, 16-82 years old (mean±SD: 62.9±10.7 years). Mean standardized uptake values (SUVmean) were measured in five anatomic sites to evaluate normal skeleton activity. The influence of sex and age was investigated...
February 22, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28230415/targeting-translational-successes-through-cansort-sci-using-pet-dogs-to-identify-effective-treatments-for-spinal-cord-injury
#5
Sarah A Moore, Nicolas Granger, Natasha Olby, Ingo Spitzbarth, Nick D Jeffery, Andrea Tipold, Yvette S Nout-Lomas, Ronaldo da Costa, Veronika Stein, Linda Noble-Haeusslein, Andrew R Blight, Robert Grossman, D Michele Basso, Jonathan Michael Levine
Translation of therapeutic interventions for spinal cord injury (SCI) from laboratory to clinic has been historically challenging, highlighting the need for robust models of injury that more closely mirror the human condition. The high prevalence of acute, naturally occurring SCI in pet dogs provides a unique opportunity to expeditiously evaluate promising interventions in a population of animals that are diagnosed and managed clinically in a manner similar to spinal cord-injured people, while adhering to NIH guidelines for scientific rigor and transparent reporting...
February 23, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28230044/a-meta-analysis-to-evaluate-the-diagnostic-value-of-dual-time-point-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-for-diagnosis-of-pulmonary-nodules
#6
Ming Zhao, Yongfu Ma, Bo Yang, Yuqi Wang
OBJECTIVES: This meta-analysis aimed at evaluating the efficacy of dual-time-point (DTP) F-fluorodeoxyglucose (F-FDG) positron emission tomography/computed tomography (PET/CT) in diagnosing pulmonary nodules. METHODS: Using computer and manual search, the current research about the efficacy of DTP F-FDG PET/CT in diagnosing pulmonary nodules was collected. According to the evaluation criteria of Quality Assessment of Diagnostic Accuracy Studies Scale, the data from 13 studies were analyzed by Meta-DiSc software, and the sensitivity (Sen), specificity (Spe), diagnostic odds ratios (DOR), positive likelihood ratios (LR+), and negative likelihood ratios (LR-) were summarized...
December 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28229437/pharmacokinetic-modeling-of-11-c-flumazenil-kinetics-in-the-rat-brain
#7
Isadora Lopes Alves, David Vállez García, Andrea Parente, Janine Doorduin, Rudi Dierckx, Ana Maria Marques da Silva, Michel Koole, Antoon Willemsen, Ronald Boellaard
BACKGROUND: Preferred models for the pharmacokinetic analysis of [(11)C]flumazenil human studies have been previously established. However, direct translation of these models and settings to animal studies might be sub-optimal. Therefore, this study evaluates pharmacokinetic models for the quantification of [(11)C]flumazenil binding in the rat brain. Dynamic (60 min) [(11)C]flumazenil brain PET scans were performed in two groups of male Wistar rats (tracer dose (TD), n = 10 and pre-saturated (PS), n = 2)...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28229361/moving-towards-a-better-understanding-of-potential-pitfalls-in-quantitative-pet-myocardial-blood-flow
#8
EDITORIAL
Paul C Cremer, Frank P DiFilippo, Wael A Jaber
No abstract text is available yet for this article.
February 22, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28229312/routine-18-f-fdg-pet-ct-does-not-detect-inflammation-in-the-left-atrium-in-patients-with-atrial-fibrillation
#9
Philipp S Lange, Nemanja Avramovic, Gerrit Frommeyer, Kristina Wasmer, Christian Pott, Lars Eckardt, Christian Wenning
Increasing evidence supports a role of inflammation in the development of atrial fibrillation (AF). However, direct evidence of persistent inflammatory activity in the atria of AF patients is scarce. In this study, we used 18-Fluor-Deoxyglucose positron emission tomography computed tomography ((18)F-FDG PET/CT) to determine atrial inflammation in patients with and without AF. Retrospectively, (18)F-FDG PET/CT scans were analyzed. 37 patients with a history of AF were compared to an age and sex matched control group with no history of AF...
February 22, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28229271/new-pet-ct-criterion-for-nodal-staging-in-non-small-cell-lung-cancer-measurement-of-the-ratio-of-section-area-of-standard-uptake-values-%C3%A2-2-5-lymph-node-section-area
#10
Yoshitaro Saito, Kazuhiro Imai, Koichi Ishiyama, Hajime Saito, Satoru Motoyama, Yusuke Sato, Hayato Konno, Satoshi Fujishima, Manabu Hashimoto, Yoshihiro Minamiya
BACKGROUND: The aim of the present study was to use surgical and histological results to develop a simple noninvasive technique for improving nodal staging using preoperative PET/CT in patients with resectable non-small cell lung cancer (NSCLC). METHODS: Preoperative PET/CT findings (163 patients) and pathological diagnoses after surgical resection were evaluated. Using PET/CT images, lymph node section area (SA), the maximum standardized uptake value (SUVmax), SA of SUV ≥2...
February 23, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28229225/implications-of-sdhb-genetic-testing-in-patients-with-sporadic-pheochromocytoma
#11
Aurelie Maignan, Carole Guerin, Valentin Julliard, Nunzia-Cinzia Paladino, Edward Kim, Philippe Roche, Fréderic Castinetti, Wassim Essamet, Julien Mancini, Alessio Imperiale, Roderick Clifton-Bligh, Pauline Romanet, Anne Barlier, Karel Pacak, Fréderic Sebag, David Taïeb
PURPOSE: Succinate dehydrogenase B (SDHB) associated pheochromocytomas (PHEOs) are associated with a higher risk of tumor aggressiveness and malignancy. The aim of the present study was to evaluate (1) the frequency of germline SDHB mutations in apparently sporadic patients with PHEO who undergo preoperative genetic testing and (2) the ability to predict pathogenic mutations. METHODS: From 2012 to 2016, 82 patients underwent a PHEO surgical resection. Sixteen were operated in the context of hereditary PHEO and were excluded from analysis...
February 22, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28229191/-18-f-fdg-pet-ct-imaging-versus-bone-marrow-biopsy-in-pediatric-hodgkin-s-lymphoma-a-quantitative-assessment-of-marrow-uptake-and-novel-insights-into-clinical-implications-of-marrow-involvement
#12
Aamna Hassan, Maimoona Siddique, Humayun Bashir, Saima Riaz, Rabia Wali, Asma Mahreen, M Khalid Nawaz
OBJECTIVE: To evaluate whether positron emission tomography/computed tomography using fluorine-18 fluoro-deoxyglucose ((18)F-FDG PET-CT) predicts bone marrow involvement (BMI) in pediatric Hodgkin's lymphoma (pHL) with sufficient accuracy to supplant routine staging bone marrow biopsy (BMB), and to assess the clinical importance of marrow disease by comparing the prognosis of stage IV HL with BMI versus that without BMI. METHODS: Data were retrospectively analyzed for all cases of pHL between July 2010 and June 2015 referred for staging (18)F-FDG PET-CT scan and BMB...
February 22, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28227950/designing-and-testing-a-wearable-wireless-fnirs-patch
#13
Mohammadreza Abtahi, Gozde Cay, Manob Jyoti Saikia, Kunal Mankodiya, Mohammadreza Abtahi, Gozde Cay, Manob Jyoti Saikia, Kunal Mankodiya, Manob Jyoti Saikia, Kunal Mankodiya, Gozde Cay, Mohammadreza Abtahi
Optical brain monitoring using near infrared (NIR) light has got a lot of attention in order to study the complexity of the brain due to several advantages as oppose to other methods such as EEG, fMRI and PET. There are a few commercially available functional NIR spectroscopy (fNIRS) brain monitoring systems, but they are still non-wearable and pose difficulties in scanning the brain while the participants are in motion. In this work, we present our endeavors to design and test a low-cost, wireless fNIRS patch using NIR light sources at wavelengths of 770 and 830nm, photodetectors and a microcontroller to trigger the light sources, read photodetector's output and transfer data wirelessly (via Bluetooth) to a smart-phone...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227014/random-forests-to-predict-tumor-recurrence-following-cervical-cancer-therapy-using-pre-and-per-treatment-18-f-fdg-pet-parameters
#14
Geoffrey Roman-Jimenez, Oscar Acosta, Julie Leseur, Anne Devillers, Henri Der Sarkissian, Lina Guzman, Eloi'se Grossiord, Juan-David Ospina, Renaud De Crevoisier, Geoffrey Roman-Jimenez, Oscar Acosta, Julie Leseur, Anne Devillers, Henri Der Sarkissian, Lina Guzman, Eloi'se Grossiord, Juan-David Ospina, Renaud De Crevoisier, Oscar Acosta, Julie Leseur, Juan-David Ospina, Geoffrey Roman-Jimenez, Henri Der Sarkissian, Renaud De Crevoisier, Anne Devillers, Eloise Grossiord, Lina Guzman
The ability to predict tumor recurrence after chemoradiotherapy of locally advanced cervical cancer is a crucial clinical issue to intensify the treatment of the most high-risk patients. The objective of this study was to investigate tumor metabolism characteristics extracted from pre- and per-treatment (18)F-FDG PET images to predict 3-year overall recurrence (OR). A total of 53 locally advanced cervical cancer patients underwent pre- and per-treatment (18)F-FDG PET (respectively PET1 and PET2). Tumor metabolism was characterized through several delineations using different thresholds, based on a percentage of the maximum uptake, and applied by region-growing...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225999/radioactive-iodine-refractory-differentiated-thyroid-cancer-an-uncommon-but-challenging-situation
#15
Angelica Schmidt, Laura Iglesias, Michele Klain, Fabián Pitoia, Martin J Schlumberger
Radioiodine (RAI)-refractory thyroid cancer is an uncommon entity, occurring with an estimated incidence of 4-5 cases/year/million people. RAI refractoriness is more frequent in older patients, in those with large metastases, in poorly differentiated thyroid cancer, and in those tumors with high 18-fluordeoxyglucose uptake on PET/CT. These patients have a 10-year survival rate of less than 10%. In recent years, new therapeutic agents with molecular targets have become available, with multikinase inhibitors (MKIs) being the most investigated drugs...
February 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28225831/whole-body-staging-of-female-patients-with-recurrent-pelvic-malignancies-ultra-fast-18f-fdg-pet-mri-compared-to-18f-fdg-pet-ct-and-ct
#16
Julian Kirchner, Lino Morris Sawicki, Saravanabavaan Suntharalingam, Johannes Grueneisen, Verena Ruhlmann, Bahriye Aktas, Cornelius Deuschl, Ken Herrmann, Gerald Antoch, Michael Forsting, Lale Umutlu
OBJECTIVES: To evaluate the diagnostic feasibility of an ultra-fast 18F-FDG PET/MRI protocol, including T2-w and contrast-enhanced T1-w imaging as well as metabolic assessment (PET) in comparison to 18F-FDG PET/CT and CT for whole-body staging of female patients with suspected recurrence of pelvic malignancies. METHODS: 43 female patients with suspected tumor recurrence were included in this study. Suspicion was based on clinical follow-up and abnormal findings on imaging follow-up...
2017: PloS One
https://www.readbyqxmd.com/read/28225435/the-role-of-18f-fdg-pet-ct-in-staging-and-restaging-primary-bone-lymphoma
#17
Yiyan Liu
PURPOSE: Primary bone lymphoma (PBL) is one of the rarest primary bone malignancies. Very limited data are available on the role of fluorine-18-fluorodeoxyglucose (F-FDG) PET/CT in PBL. PATIENTS AND METHODS: Overall, 16 relevant patients had F-FDG PET/CT for staging or staging/restaging PBL. The cases with extraskeletal lesions such as lymphadenopathy or with osseous involvements in disseminated lymphoma were excluded on the basis of the definition of PBL. F-FDG PET/CT findings were correlated to pathologic and/or anatomic image information...
February 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28225434/pet-ct-surveillance-detects-asymptomatic-recurrences-in-stage-iiib-and-iiic-melanoma-patients-a-prospective-cohort-study
#18
Max F Madu, Pieter Timmerman, Michel W J M Wouters, Bernies van der Hiel, Jos A van der Hage, Alexander C J van Akkooi
AJCC stage IIIB and IIIC melanoma patients are at risk for disease relapse or progression. The advent of effective systemic therapies has made curative treatment of progressive disease a possibility. As resection of oligometastatic disease can confer a survival benefit and as immunotherapy is possibly most effective in a low tumor load setting, there is a likely benefit to early detection of progression. The aim of this pilot study was to evaluate a PET/computed tomography (CT) surveillance schedule for resected stage IIIB and IIIC melanoma...
February 20, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28224451/pet-cta-detection-of-muscle-inflammation-related-to-cholesterol-crystal-emboli-without-arterial-obstruction
#19
M Hassan Pervaiz, Sridevi Durga, Abed Janoudi, Kevin Berger, George S Abela
BACKGROUND: PET/CTA was used to evaluate the effect of cholesterol crystal emboli (CCE) on muscle injury. Cholesterol crystals (CCs) released during plaque rupture travel downstream and lodge in muscle triggering inflammation and tissue injury. METHODS: Thigh muscles in three groups of rabbits (n = 22) were studied after intra-arterial injection of CCs, Group I (n = 10); polystyrene microspheres, Group II (n = 5); or normal saline, Group III (n = 7). After 48 hours, muscle inflammation and injury were measured by fluorodeoxy-glucose uptake using PET/CTA, serum tissue factor (TF), and creatinine phosphokinase (CPK)...
February 21, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28224325/comparison-of-contrast-enhanced-ct-and-18-f-fdg-pet-ct-analysis-using-kurtosis-and-skewness-in-patients-with-primary-colorectal-cancer
#20
Franca Wagner, Yahya Ali Hakami, Geoffrey Warnock, Gabriel Fischer, Martin W Huellner, Patrick Veit-Haibach
PURPOSE: Heterogeneity is a key feature of malignancy associated with adverse tumor biology. Texture analysis with different imaging modalities has been shown to reflect tumor heterogeneity. The current study analyzed and compared pre-treatment (contrast-enhanced) ceCT and positron emission tomography/computed tomography (PET/CT) tumor heterogeneity using the parameters skewness and kurtosis in patients with primary colorectal cancer with and without liver metastases. PROCEDURES: The histogram-derived texture parameters skewness and kurtosis were retrospectively analyzed obtained on PET/CT and ceCT images from 50 patients with histopathology proven primary colorectal cancer (32 patients without liver metastases and 18 with liver metastases)...
February 21, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
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