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https://www.readbyqxmd.com/read/28215055/occupational-hazards-for-home-care-nurses-across-the-rural-to-urban-gradient-in-ontario-canada
#1
Matthew Wong, Margaret Saari, Erin Patterson, Martine Puts, Ann E Tourangeau
The purpose of this paper was to describe occupational hazards for nurses working in home care (HC) and explore how they differ across the rural-to-urban gradient. Responses (n = 823) from a cross-sectional survey conducted in 2012 of HC nurses registered to practise nursing in the Province of Ontario, Canada were used. Using chi-square analysis and posthoc pairwise tests with a Bonferroni correction, 14 occupational hazards were individually tested for differences between four geographical settings (rural, town, suburban or urban areas)...
February 19, 2017: Health & Social Care in the Community
https://www.readbyqxmd.com/read/28214975/surveillance-scans-in-lymphoma-friend-or-foe
#2
REVIEW
Tycel Phillips, Jessica Mercer
Advancements in the treatment of lymphoma over the last few decades have allowed more patients to achieve a remission after the completion of therapy. Due to the improvement in response rates, methods to detect recurrence early and accurately during follow-up, especially in patients with potential curable aggressive lymphomas, are a key. Observation has always involved close clinical follow-up with the use of physical exams and routine labs, but rapid changes in technology have allowed CT scans, PET scans, and MRIs to become an integral part of managing patients with lymphoma...
February 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/28214165/agenesis-of-the-corpus-callosum-and-aicardi-syndrome-a%C3%A2-neuroimaging-and-clinical-comparison
#3
T Govil-Dalela, A Kumar, R Agarwal, H T Chugani
BACKGROUND: Agenesis of the corpus callosum can occur in individuals with epilepsy, either in isolation or as part of various neurological conditions, such as Aicardi syndrome. In this study, we evaluated the clinical and neuroradiological differences between children with nonsyndromic agenesis of the corpus callosum and those with Aicardi syndrome. METHODS: We evaluated 31 children with epilepsy and agenesis of the corpus callosum (11 males, 20 females), 14 of whom had Aicardi syndrome (all females)...
January 4, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28213876/update-on-neoadjuvant-regimens-for-patients-with-operable-oesophageal-gastrooesophageal-junction-adenocarcinomas-and-squamous-cell-carcinomas
#4
REVIEW
Samantha J Cox, Sean M O'Cathail, Bernadette Coles, Tom Crosby, Somnath Mukherjee
Survival outcomes following multimodal treatment of operable oesophageal and gastrooesophageal cancer remain disappointingly poor. Although an appreciation of the impact of both tumour location and histological subtype is now shaping the design of clinical trials, there has been a lack of consensus of the optimal neoadjuvant treatment strategy. This update article will review recent advances in the use of both neoadjuvant chemotherapy and chemoradiotherapy. The emerging role of PET imaging to direct appropriate neoadjuvant treatment regimens and the additive benefit of biological agents are also discussed...
January 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28213439/tau-and-%C3%AE-amyloid-are-associated-with-medial-temporal-lobe-structure-function-and-memory-encoding-in-normal-aging
#5
Shawn M Marks, Samuel N Lockhart, Suzanne L Baker, William J Jagust
Normal aging is associated with decline in episodic memory, and also with aggregation of the β-amyloid (Aβ) and tau proteins and atrophy of medial temporal lobe structures crucial to memory formation. While some evidence suggests that Aβ is associated with aberrant neural activity, the relationships between these two aggregated proteins, neural function, and brain structure are poorly understood. Using in vivo human Aβ and tau imaging, we demonstrate that increased Aβ and tau are both associated with aberrant functional magnetic resonance imaging activity in the medial temporal lobes during memory encoding in cognitively normal older adults...
February 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28213219/a-water-soluble-and-highly-phosphorescent-cyclometallated-iridium-complex-with-versatile-sensing-capability
#6
Zhen Yang, Yuan Zhao, Chan Wang, Qijun Song, Qingfeng Pang
A water-soluble and highly phosphorescent cyclometallated iridium complex [(pq)2Ir(bpy-COOK)](+)Cl(-) (where pq=2-phenylquinoline, bpy-COOK= potassium 2,2'-bipyridine-4,4'-dicarboxylate) (Ir) has been synthesized and characterized. Its phosphorescence can be sensitively and selectively quenched by tryptophan through a photoinduced electron-transfer (PET) process. Furthermore, the phosphorescence of Ir is drastically increased upon binding with bovine serum albumin (BSA), and the enhanced signal is effectively quenched in the presence of Cu(2+)...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213113/a-variational-bayesian-inference-method-for-parametric-imaging-of-pet-data
#7
M Castellaro, G Rizzo, M Tonietto, M Veronese, F E Turkheimer, M A Chappell, A Bertoldo
In dynamic Positron Emission Tomography (PET) studies, compartmental models provide the richest information on the tracer kinetics of the tissue. Inverting such models at the voxel level is however quite challenging due to the low signal-to-noise ratio of the time activity curves. In this study, we propose the use of a Variational Bayesian (VB) approach to efficiently solve this issue and thus obtain robust quantitative parametric maps. VB was adapted to the non-uniform noise distribution of PET data. Moreover, we propose a novel hierarchical scheme to define the model parameter priors directly from the images in case such information are not available from the literature, as often happens with new PET tracers...
February 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28213066/inguinal-lymph-node-presenting-as-the-delayed-site-of-metastasis-in-early-stage-endometrial-carcinoma-case-report
#8
Shomaila Amir M Akbar, Mutahir A Tunio, Wafa AlShakweer, AbdulAziz AlObaid, Mushabbab AlAsiri
INTRODUCTION: Inguinal lymph nodes are the frequent sites of metastasis for malignant lymphoma, squamous cell carcinoma of anal canal, vulva and penis, malignant melanoma and squamous cell carcinoma of skin over lower extremities or trunk. Anatomically, endometrial carcinoma is less likely to spread to the superficial or deep inguinal lymph nodes, thus metastatic involvement of these lymph nodes can easily be overlooked. CASE PRESENTATION: Here-in we report a case of a 65-year old Saudi morbid obese female, who presented with left inguinal lymphadenopathy as initial delayed site of metastasis almost 19 months after the initial treatment for FIGO IA endometrial carcinoma...
January 19, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28212997/differential-expression-and-prognostic-significance-of-glut1-according-to-histologic-type-of-non-small-cell-lung-cancer-and-its-association-with-volume-dependent-parameters
#9
Young Wha Koh, Su Jin Lee, Seong Yong Park
BACKGROUND: We evaluated glucose transporter type 1 (GLUT1) and carbonic anhydrase IX (CAIX) expression, together with volume-based(18)F-fluorodeoxyglucose positron emission tomography (FDG-PET) parameters, in non-small cell lung cancer (NSCLC) patients, and examined the prognostic significance of those parameters according to its histologic subtype. METHOD: A total of 269 patients, who underwent surgical resection for NSCLC, were reviewed retrospectively. Metabolic tumor volume (MTV) and total lesion glycolysis (TLG) values were measured by preoperative (18)F-fluorodeoxyglucose positron emission tomography computed tomography...
February 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28212098/a-2-5-mw-ch-50-mcps-10-analog-channel-adaptively-biased-read-out-front-end-ic-with-low-intrinsic-timing-resolution-for-single-photon-time-of-flight-pet-applications-with-time-dependent-noise-analysis-in-90-nm-cmos
#10
Hugo Cruz, Hong-Yi Huang, Ching-Hsing Luo, Shuenn-Yuh Lee
This paper presents a 10-channel time-of-flight application-specific integrated circuit (ASIC) for positron emission tomography in a 90 nm standard CMOS process. To overcome variations in channel-to-channel timing resolution caused by mismatch and process variations, adaptive biases and a digital-to-analog converter (DAC) are utilized. The main contributions of this work are as follows. First, multistage architectures reduce the total power consumption, and detection bandwidths of analog preamplifiers and comparators are increased to 1 and 1...
February 13, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28211923/electrical-and-photocatalytic-properties-of-boron-doped-zno-nanostructure-grown-on-pet-ito-flexible-substrates-by-hydrothermal-method
#11
Wei Wang, Taotao Ai, Qi Yu
Boron-doped zinc oxide sheet-spheres were synthesized on PET-ITO flexible substrates using a hydrothermal method at 90 °C for 5 h. The results of X-ray diffraction and X-ray photoelectron spectroscopy indicated that the B atoms were successfully doped into the ZnO lattice, the incorporation of B led to an increase in the lattice constant of ZnO and a change in its internal stress. The growth mechanism of pure ZnO nanorods and B-doped ZnO sheet-spheres was specifically investigated. The as-prepared BZO/PET-ITO heterojunction possessed obvious rectification properties and its positive turn-on voltage was 0...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211032/depth-of-interaction-determination-in-monolithic-scintillator-with-double-side-sipm-readout
#12
Matteo Morrocchi, Giovanni Ambrosi, Maria Giuseppina Bisogni, Filippo Bosi, Marco Boretto, Piergiorgio Cerello, Maria Ionica, Ben Liu, Francesco Pennazio, Maria Antonietta Piliero, Giovanni Pirrone, Vasile Postolache, Richard Wheadon, Alberto Del Guerra
BACKGROUND: Monolithic scintillators read out by arrays of photodetectors represent a promising solution to obtain high spatial resolution and the depth of interaction (DOI) of the annihilation photon. We have recently investigated a detector geometry composed of a monolithic scintillator readout on two sides by silicon photomultiplier (SiPM) arrays, and we have proposed two parameters for the DOI determination: the difference in the number of triggered SiPMs on the two sides of the detector and the difference in the maximum collected signal on a single SiPM on each side...
December 2017: EJNMMI Physics
https://www.readbyqxmd.com/read/28210997/3d-skeletal-uptake-of-18-f-sodium-fluoride-in-pet-ct-images-is-associated-with-overall-survival-in-patients-with-prostate-cancer
#13
Sarah Lindgren Belal, May Sadik, Reza Kaboteh, Nezar Hasani, Olof Enqvist, Linus Svärm, Fredrik Kahl, Jane Simonsen, Mads H Poulsen, Mattias Ohlsson, Poul F Høilund-Carlsen, Lars Edenbrandt, Elin Trägårdh
BACKGROUND: Sodium fluoride (NaF) positron emission tomography combined with computer tomography (PET/CT) has shown to be more sensitive than the whole-body bone scan in the detection of skeletal uptake due to metastases in prostate cancer. We aimed to calculate a 3D index for NaF PET/CT and investigate its correlation to the bone scan index (BSI) and overall survival (OS) in a group of patients with prostate cancer. METHODS: NaF PET/CT and bone scans were studied in 48 patients with prostate cancer...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28210996/quantitative-evaluation-of-oxygen-metabolism-in-the-intratumoral-hypoxia-18-f-fluoromisonidazole-and-15-o-labelled-gases-inhalation-pet
#14
Tadashi Watabe, Yasukazu Kanai, Hayato Ikeda, Genki Horitsugi, Keiko Matsunaga, Hiroki Kato, Kayako Isohashi, Kohji Abe, Eku Shimosegawa, Jun Hatazawa
BACKGROUND: Intratumoral hypoxia is one of the resistant factors in radiotherapy and chemotherapy for cancer. Although it is detected by (18)F-fluoromisonidazole (FMISO) PET, the relationship between intratumoral hypoxia and oxygen metabolism has not been studied. The purpose of this study was to evaluate the intratumoral perfusion and oxygen metabolism in hypoxic regions using the rat xenograft model. Ten male Fischer rats with C6 glioma (body weight = 220 ± 15 g) were investigated with (18)F-FMISO PET and steady-state inhalation method of (15)O-labelled gases PET...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28210978/future-directions-in-imaging-neurodegeneration
#15
REVIEW
Joseph C Masdeu
Neuroimaging comprises a powerful set of instruments to diagnose various neurodegenerative disorders, clarifies their neurobiology, and monitors their treatment. Magnetic resonance imaging depicts volume changes, as well as abnormalities in functional and structural connectivity. Positron emission tomography (PET) allows for the quantification of regional cerebral metabolism, characteristically altered in Alzheimer's disease, amyotrophic lateral sclerosis, diffuse Lewy-body disease, and the frontotemporal dementias...
January 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28210722/synthesis-radio-synthesis-and-in-vitro-evaluation-of-terminally-fluorinated-derivatives-of-hu-210-and-hu-211-as-novel-candidate-pet-tracers
#16
Chiara Zanato, Alessia Pelagalli, Katie F M Marwick, Monica Piras, Sergio Dall'Angelo, Andrea Spinaci, Roger G Pertwee, David J A Wyllie, Giles E Hardingham, Matteo Zanda
We report the synthesis of terminally fluorinated HU-210 and HU-211 analogues (HU-210F and HU-211F, respectively) and their biological evaluation as ligands of cannabinoid receptors (CB1 and CB2) and N-methyl d-aspartate receptor (NMDAR). [(18)F]-labelled HU-210F was radiosynthesised from the bromo-substituted precursor. In vitro assays showed that both HU-210F and HU-211F retain the potent pharmacological profile of HU-210 and HU-211, suggesting that [(18)F]-radiolabelled HU-210F and HU-211F could have potential as PET tracers for in vivo imaging...
February 17, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28210493/reducing-the-blame-culture-through-clinical-audit-in-nuclear-medicine-a-mixed-methods-study
#17
P Ross, J Hubert, W L Wong
OBJECTIVES: To identify the barriers and facilitators of doctors' engagement with clinical audit and to explore how and why these factors influenced doctors' decisions to engage with the NHS National Clinical Audit Programme. DESIGN: A single-embedded case study. Mixed methods sequential approach with explorative pilot study and follow-up survey. Pilot study comprised 13 semi-structured interviews with purposefully selected consultant doctors over a six-month period...
February 2017: JRSM Open
https://www.readbyqxmd.com/read/28210410/a-case-of-glenoid-fossa-fracture-progressive-ankylosis-total-joint-reconstruction-with-alloplastic-prosthesis-to-normalized-function-including-evaluation-with-f18-pet-ct-a-four-year-follow-up
#18
Björn Lindell, Andreas Thor
Temporomandibular joint replacement (TJR) with alloplastic prosthesis has shown promising long-term results in end stage joint disorders. We present a case of young woman with painful ankylosis that where reconstructed with TJR, due to a complex mandibular fracture with dislocation of the left condyle into the middle cranial fossa two years earlier. At the age of 18 the subject underwent a total joint replacement with custom-made alloplastic TMJ prosthesis. To determine the bone response and remodeling activity around the prosthesis, a F18 PET/CT-scan was used...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28209912/detection-efficacy-of-hybrid-68-ga-psma-ligand-pet-ct-in-prostate-cancer-patients-with-biochemical-recurrence-after-primary-radiation-therapy-defined-by-phoenix-criteria
#19
Ingo Einspieler, Isabel Rauscher, Charlotte Düwel, Markus Krönke, Christoph Rischpler, Gregor Habl, Sabrina Dewes, Armin Ott, Hans-Jürgen Wester, Markus Schwaiger, Tobias Maurer, Matthias Eiber
The aim of this retrospective study was to evaluate the detection rate of Glu-NH-CO-NH-Lys-(Ahx)-[(68)Ga(HBED-CC)] ((68)Ga-PSMA ligand) positron emission tomography/computed tomography (PET/CT) in patients with biochemical recurrent prostate cancer (PC) defined by Phoenix criteria after external beam radiotherapy (EBRT) or brachytherapy as primary treatment. Methods: 118 patients were finally eligible for this retrospective analysis with a median prostate-specific antigen (PSA) of 6.4 ng/mL (range: 2.2-158...
February 16, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28209907/equivalent-dose-rate-at-1m-of-patients-with-known-or-suspected-neuroendocrine-tumor-exiting-a-nuclear-medicine-department-after-68-ga-dotatoc-18-f-fdopa-or-18-f-fdg-pet-ct-or-111-in-pentetreotide-or-123-i-mibg-spect-ct
#20
Jules Zhang-Yin, Anne-Sophie Dirand, Myriam Sasanelli, Gwenaelle Corrégé, Aude Peudon, Thierry Kiffel, Valérie Nataf, Jérôme Clerc, Françoise Montravers, Jean-Noël Talbot
(123)I-mIBG and (111)In-pentetrotide SPECT have been used for functional imaging of neuroendocrine tumors (NET) for the last two decades. More recently, PET/CT imaging with (18)F-FDG, (18)F-FDOPA and (68)Ga somatostatin-receptor ligands in NETs has been expanding. No direct measurements of the dose rate from NET patients exiting the nuclear medicine department could be found in the literature after PET/CT with (18)F-FDOPA or (68)Ga-DOTATOC, a somatostatin analogue. Methods: We measured the dose rates from NET patients undergoing PET/CT or SPECT/CT in our centers...
February 16, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
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