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https://www.readbyqxmd.com/read/27906943/fluoroscopic-sacroiliac-joint-injection-is-oblique-angulation-really-necessary
#1
Sandeep Khuba, Anil Agarwal, Sujeet Gautam, Sanjay Kumar
BACKGROUND: The conventional technique for sacroiliac (SI) joint injection involves aligning the anterior and posterior aspects of the SI joint under fluoroscopic guidance and then entering the SI joint in the most caudal aspect. OBJECTIVE: We wish to highlight that there is no added advantage to aligning both the anterior and posterior joint lines of the SI joint as it is time consuming, associated with additional radiation exposure, and may make the entry into the posterior SI joint technically more difficult...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27892590/near-infrared-selective-dynamic-windows-controlled-by-charge-transfer-impedance-at-the-counter-electrode
#2
Praveen Pattathil, Riccardo Scarfiello, Roberto Giannuzzi, Giulia Veramonti, Teresa Sibillano, Antonio Qualtieri, Cinzia Giannini, P Davide Cozzoli, Michele Manca
Recent developments in the exploitation of transparent conductive oxide nanocrystals paved the way to the realization of a new class of electrochemical systems capable of selectively shielding the infrared heat loads carried by sunlight and prospected the blooming of a key enabling technology to be implemented in the next generation of "zero-energy" building envelopes. Here we report the fabrication of a set of electrochromic devices embodying an engineered nanostructured electrode made by high aspect-ratio tungsten oxide nanorods, which allow for selectively and dynamically controlling sunlight transmission over the near-infrared to visible range...
November 28, 2016: Nanoscale
https://www.readbyqxmd.com/read/27869214/irradiance-dependent-uvb-photocarcinogenesis
#3
Cheng-Che E Lan, Ching-Shuang Wu, Shu-Mei Huang, Chin-Han Wu, Hsiao-Chi Lai, Yu-Ting Peng, Pao-Sheng Hou, Hui-Jun Yang, Gwo-Shing Chen
Ultraviolet B (UVB) radiation from the sun may lead to photocarcinogenesis of the skin. Sunscreens were used to protect the skin by reducing UVB irradiance, but sunscreen use did not reduce sunburn episodes. It was shown that UVB-induced erythema depends on surface exposure but not irradiance of UVB. We previously showed that irradiance plays a critical role in UVB-induced cell differentiation. This study investigated the impact of irradiance on UVB-induced photocarcinogenesis. For hairless mice receiving equivalent exposure of UVB radiation, the low irradiance (LI) UVB treated mice showed more rapid tumor development, larger tumor burden, and more keratinocytes harboring mutant p53 in the epidermis as compared to their high irradiance (HI) UVB treated counterpart...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27846229/microrna-expression-for-early-prediction-of-late-occurring-hematologic-acute-radiation-syndrome-in-baboons
#4
Matthias Port, Francis Herodin, Marco Valente, Michel Drouet, Reinhard Ullmann, Sven Doucha-Senf, Andreas Lamkowski, Matthäus Majewski, Michael Abend
For effective medical management of radiation-exposed persons after a radiological/nuclear event, blood-based screening measures in the first few days that could predict hematologic acute radiation syndrome (HARS) are needed. For HARS severity prediction, we used microRNA (miRNA) expression changes measured on days one and two after irradiation in a baboon model. Eighteen baboons underwent different patterns of partial or total body irradiation, corresponding to an equivalent dose of 2.5 or 5 Gy. According to changes in blood cell counts (BCC) the surviving baboons (n = 17) exhibited mild (H1-2, n = 4) or more severe (H2-3, n = 13) HARS...
2016: PloS One
https://www.readbyqxmd.com/read/27844336/radiation-safety-awareness-among-medical-interns-are-eu-guidelines-being-implemented
#5
A M Lee, M J Lee
BACKGROUND: European recommendations suggest that medical students should be taught radiation safety before entering clinical practice. AIM: The aim of this study was to produce a summative assessment of radiation protection training in medical school in Ireland. MATERIALS AND METHODS: A web-based questionnaire was distributed to the 2014 intern population (n = 683) via network intern-coordinators. The survey encompassed knowledge of radiation dose in X-ray investigations, laws governing the prescribing of radiation and complications of radiation exposure to staff and patients...
November 14, 2016: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/27824535/update-on-the-management-of-intestinal-failure
#6
REVIEW
Shishira Bharadwaj, Parul Tandon, John M Rivas, Anne Furman, Lisa Moccia, Ashley Ratliff, Abdullah Shatnawei, Ezra Steiger, Donald F Kirby
Intestinal failure is a serious complication of conditions such as inflammatory bowel disease, mesenteric ischemia, and radiation enteritis--and of extensive bowel resection performed because of these diseases. Imbalances of fluids and electrolytes and poor nutritional status manifest as chronic diarrhea or increased ostomy output. Prompt referral to a center specializing in intestinal rehabilitation is key to achieving nutritional homeostasis and, in some cases, can help the patient return to oral food intake...
November 2016: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/27812519/in-depth-medical-nutrition-therapy-for-a-woman-with-diabetes-from-pregnancy-to-delivery
#7
Miyoung Jang, Dal Lae Ju, MeeRa Kweon, Misun Park
Diabetes in pregnancy is associated with higher rates of miscarriage, pre-eclampsia, preterm labor, and fetal malformation. To prevent these obstetric and perinatal complications, women with diabetes have to control levels of blood sugar, both prior to and during pregnancy. Thus, individualized medical nutrition therapy for each stage of pregnancy is essential. We provided in-depth medical nutrition therapy to a 38-year-old pregnant woman with diabetes at all stages of pregnancy up to delivery. She underwent radiation therapy after surgery for breast cancer and was diagnosed with diabetes...
October 2016: Clinical Nutrition Research
https://www.readbyqxmd.com/read/27808492/dual-targeting-magnetic-plga-nanoparticles-for-codelivery-of-paclitaxel-and-curcumin-for-brain-tumor-therapy
#8
Yanna Cui, Meng Zhang, Feng Zeng, Hongyue Jin, Qin Xu, Yongzhuo Huang
Chemotherapy is one of the most important strategies for glioma treatment. However, the "impermeability" of the blood-brain barrier (BBB) impedes most chemotherapeutics to enter the brain, thereby rendering very few drugs suitable for glioma therapy, letting along application of combination of chemotherapeutics. Thereby, it is a pressing need to overcome the obstacles. A dual-targeting strategy was developed by combination of magnetic-guidance and the transferrin receptor-binding peptide T7-mediated active targeting delivery...
November 3, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27806609/an-experimental-demonstration-of-a-new-type-of-proton-computed-tomography-using-a-novel-silicon-tracking-detector
#9
J T Taylor, G Poludniowski, T Price, C Waltham, P P Allport, G L Casse, M Esposito, P M Evans, S Green, S Manger, S Manolopoulos, J Nieto-Camero, D J Parker, J Symons, N M Allinson
PURPOSE: Radiography and tomography using proton beams promise benefit to image guidance and treatment planning for proton therapy. A novel proton tracking detector is described and experimental demonstrations at a therapy facility are reported. A new type of proton CT reconstructing relative "scattering power" rather than "stopping power" is also demonstrated. Notably, this new type of imaging does not require the measurement of the residual energies of the protons. METHODS: A large area, silicon microstrip tracker with high spatial and temporal resolution has been developed by the Proton Radiotherapy Verification and Dosimetry Applications consortium and commissioned using beams of protons at iThemba LABS, Medical Radiation Department, South Africa...
November 2016: Medical Physics
https://www.readbyqxmd.com/read/27768353/uncoupled-dark-states-can-inherit-polaritonic-properties
#10
Carlos Gonzalez-Ballestero, Johannes Feist, Eduardo Gonzalo Badía, Esteban Moreno, Francisco J Garcia-Vidal
When a collection of quantum emitters interacts with an electromagnetic field, the whole system can enter into the collective strong coupling regime in which hybrid light-matter states, i.e., polaritons can be created. Only a small portion of excitations in the emitters are coupled to the light field, and there are many dark states that, in principle, retain their pure excitonic nature. Here we theoretically demonstrate that these dark states can have a delocalized character, which is inherent to polaritons, despite the fact that they do not have a photonic component...
October 7, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27751833/perineal-ultrasound-offers-useful-information-in-girls-with-congenital-adrenal-hyperplasia
#11
J Lindert, O Hiort, L Tüshaus, K Tafazzoli-Lari, L Wünsch
A variable spectrum of urogenital malformations exists in girls with congenital adrenal hyperplasia (CAH). The vagina may enter the urethra at a variable level, and relations to the sphincter complex vary accordingly. Furthermore, an enlarged clitoris and variations in the bladder sphincter anatomy can be found. Endoscopy, genitography or magnetic resonance imaging (MRI) are commonly used for the assessment of these anomalies, and to provide information for counselling and treatment. When surgery is planned, introitoplasty cosmetical reduction of the clitoris and labioplasty are discussed with the families; introitoplasty is the most demanding aspect...
September 10, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27732575/fossil-evidence-of-the-avian-vocal-organ-from-the-mesozoic
#12
Julia A Clarke, Sankar Chatterjee, Zhiheng Li, Tobias Riede, Federico Agnolin, Franz Goller, Marcelo P Isasi, Daniel R Martinioni, Francisco J Mussel, Fernando E Novas
From complex songs to simple honks, birds produce sounds using a unique vocal organ called the syrinx. Located close to the heart at the tracheobronchial junction, vocal folds or membranes attached to modified mineralized rings vibrate to produce sound. Syringeal components were not thought to commonly enter the fossil record, and the few reported fossilized parts of the syrinx are geologically young (from the Pleistocene and Holocene (approximately 2.5 million years ago to the present)). The only known older syrinx is an Eocene specimen that was not described or illustrated...
October 12, 2016: Nature
https://www.readbyqxmd.com/read/27709147/opportunities-for-glyconanomaterials-in-personalized-medicine
#13
Niels-Christian Reichardt, Manuel Martín-Lomas, Soledad Penadés
In this feature article we discuss the particular relevance of glycans as components or targets of functionalized nanoparticles (NPs) for potential applications in personalized medicine but we will not enter into descriptions for their preparation. For a more general view covering the preparation and applications of glyconanomaterials the reader is referred to a number of recent reviews. The combination of glyco- and nanotechnology is already providing promising new tools for more personalized solutions to diagnostics and therapy...
September 14, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27690219/mk-8776-a-novel-chk1-kinase-inhibitor-radiosensitizes-p53-defective-human-tumor-cells
#14
Kathleen A Bridges, Xingxing Chen, Huifeng Liu, Crosby Rock, Thomas A Buchholz, Stuart D Shumway, Heath D Skinner, Raymond E Meyn
Radiotherapy is commonly used to treat a variety of solid tumors but improvements in the therapeutic ratio are sorely needed. The aim of this study was to assess the Chk1 kinase inhibitor, MK-8776, for its ability to radiosensitize human tumor cells. Cells derived from NSCLC and HNSCC cancers were tested for radiosensitization by MK-8776. The ability of MK-8776 to abrogate the radiation-induced G2 block was determined using flow cytometry. Effects on repair of radiation-induced DNA double strand breaks (DSBs) were determined on the basis of rad51, γ-H2AX and 53BP1 foci...
September 28, 2016: Oncotarget
https://www.readbyqxmd.com/read/27668950/merging-structural-information-from-x-ray-crystallography-quantum-chemistry-and-exafs-spectra-the-oxygen-evolving-complex-in-psii
#15
Petko Chernev, Ivelina Zaharieva, Emanuele Rossini, Artur Galstyan, Holger Dau, Ernst-Walter Knapp
Structural data of the oxygen-evolving complex (OEC) in photosystem II (PSII) determined by X-ray crystallography, quantum chemistry (QC), and extended X-ray absorption fine structure (EXAFS) analyses are presently inconsistent. Therefore, a detailed study of what information can be gained about the OEC through a comparison of QC and crystallographic structure information combined with the information from range-extended EXAFS spectra was undertaken. An analysis for determining the precision of the atomic coordinates of the OEC by QC is carried out...
October 12, 2016: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/27667884/a-new-silicon-tracker-for-proton-imaging-and-dosimetry
#16
J T Taylor, C Waltham, T Price, N M Allinson, P P Allport, G L Casse, A Kacperek, S Manger, N A Smith, I Tsurin
For many years, silicon micro-strip detectors have been successfully used as tracking detectors for particle and nuclear physics experiments. A new application of this technology is to the field of particle therapy where radiotherapy is carried out by use of charged particles such as protons or carbon ions. Such a treatment has been shown to have advantages over standard x-ray radiotherapy and as a result of this, many new centres offering particle therapy are currently under construction around the world today...
September 21, 2016: Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
https://www.readbyqxmd.com/read/27663893/improved-efficacy-of-neoadjuvant-compared-to-adjuvant-immunotherapy-to-eradicate-metastatic-disease
#17
Jing Liu, Stephen J Blake, Michelle C R Yong, Heidi Harjunpää, Shin Foong Ngiow, Kazuyoshi Takeda, Arabella Young, Jake S O'Donnell, Stacey Allen, Mark J Smyth, Michele W L Teng
: Immunotherapy has recently entered a renaissance phase with the approval of multiple agents for the treatment of cancer. Immunotherapy stands ready to join traditional modalities, including surgery, chemotherapy, radiation, and hormone therapy, as a pillar of cancer treatment. Although immunotherapy has begun to have success in advanced cancer treatment, its scheduling and efficacy with surgery to treat earlier stages of cancer and prevent distant metastases have not been systematically examined...
December 2016: Cancer Discovery
https://www.readbyqxmd.com/read/27660145/biodistribution-and-radiation-dosimetry-of-c-11-nicotine-from-whole-body-pet-imaging-in-humans
#18
Pradeep K Garg, Stephen J Lokitz, Rachid Nazih, Sudha Garg
: The main focus of this study was to assess the in vivo distribution and radiation absorbed dose of (11)C-nicotine derived from the whole body Positron emission tomography (PET) imaging in humans. METHODS: After an initial Computed tomography (CT) attenuation scan, (11)C-nicotine was administered via an intravenous injection, and dynamic whole body PET scans were acquired in a 3-D mode on 11 normal healthy (5 male, 6 female) subjects. The first scan was acquired in a dynamic acquisition mode for 90 s with the brain in the field of view, followed by a series of whole body PET scans acquired over a 90 min time period...
September 22, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27645287/radiation-doses-for-pregnant-women-in-the-late-pregnancy-undergoing-fetal-computed-tomography-a-comparison-of-dosimetry-and-monte-carlo-simulations
#19
Yuta Matsunaga, Ai Kawaguchi, Masanao Kobayashi, Shigetaka Suzuki, Shoichi Suzuki, Koichi Chida
The purposes of this study were (1) to compare the radiation doses for 320- and 80-row fetal-computed tomography (CT), estimated using thermoluminescent dosimeters (TLDs) and the ImPACT Calculator (hereinafter referred to as the "CT dosimetry software"), for a woman in her late pregnancy and her fetus and (2) to estimate the overlapped fetal radiation dose from a 320-row CT examination using two different estimation methods of the CT dosimetry software. The direct TLD data in the present study were obtained from a previous study...
September 19, 2016: Radiological Physics and Technology
https://www.readbyqxmd.com/read/27644912/management-of-radiation-and-chemotherapy-related-acute-toxicity-in-gastrointestinal-cancer
#20
REVIEW
Gerhard G Grabenbauer, Göbel Holger
Possible toxic effects following radiation and chemotherapy of gastrointestinal tumours may cause a depletion of the mucosal barrier within the radiation volumes with severe mucositis. Diarrhoea, nausea, emesis and severe malabsorption followed by infections with dehydration and electrolyte disorders have to be encountered. For prevention and treatment of oropharyngeal mucositis an oral care protocol, oral cryotherapy together with benzydamine mouthwash may be recommended. Lower gastrointestinal diarrhoea is best treated by Octreotide (>100 μg s...
August 2016: Best Practice & Research. Clinical Gastroenterology
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