keyword
MENU ▼
Read by QxMD icon Read
search

Yttrium

keyword
https://www.readbyqxmd.com/read/28922064/erbium-yttrium-aluminum-garnet-laser-activated-sodium-hypochlorite-irrigation-a-promising-procedure-for-minimally-invasive-endodontics
#1
Xiaogang Cheng, Tiantian Tian, Yu Tian, Doudou Xiang, Jun Qiu, Xiaohua Liu, Qing Yu
OBJECTIVE: This study was to evaluate the potential of Erbium:Yttrium Aluminum Garnet laser-activated sodium hypochlorite irrigation (Er:YAG + NaOCl) for minimally invasive endodontics (MIE). BACKGROUND DATA: Er:YAG laser irradiation can dramatically enhance the penetration of NaOCl, which may be a promising protocol for MIE. METHODS: Extracted human teeth were contaminated with Enterococcus faecalis for 4 weeks. The infected canals were then shaped to different apical terminal working widths (ATWW, 15#/0...
September 14, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28918009/low-temperature-degradation-of-single-layers-of-multilayered-zirconia-in-comparison-to-conventional-unshaded-zirconia-phase-transformation-and-flexural-strength
#2
Sebastian Wille, Paul Zumstrull, Victor Kaidas, Lea Katharina Jessen, Matthias Kern
OBJECTIVES: The aim of this study was to evaluate the transformation of yttrium stabilized tetragonal zirconia (Y-TZP) to monoclinic phase and its change in flexural strength of the various layers of multilayered zirconia (enamel layer, transition layer 1, transition layer 2 and body layer) in comparison to two conventional zirconia ceramics. Additionally, the ball-on-three-balls test was compared with a conventional biaxial flexural strength test. METHODS: The crystallographic structure of the four layers of Katana Zirconia ML (Kuraray), e...
September 8, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28916345/is-a-technetium-99m-macroaggregated-albumin-scan-essential-in-the-workup-for-selective-internal-radiation-therapy-with-yttrium-90-an-analysis-of-532-patients
#3
Lidia Sancho, Macarena Rodriguez-Fraile, Jose Ignacio Bilbao, Carmen Beorlegui Arteta, Mercedes Iñarrairaegui, Veronica Moran, Bruno Sangro
PURPOSE: To determine if baseline patient, tumor, and pretreatment evaluation characteristics could help identify patients who require technetium-99m ((99m)Tc) macroaggregated albumin ((99m)Tc MAA) imaging before selective internal radiation therapy (SIRT). MATERIALS AND METHODS: In this retrospective analysis, 532 consecutive patients with primary (n = 248) or metastatic (n = 284) liver tumors were evaluated between 2006 and 2015. Variables were compared between patients in whom (99m)Tc MAA imaging results contraindicated/modified SIRT administration with yttrium-90 ((90)Y) resin microspheres and those who were treated as initially planned...
September 13, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28912945/comparison-of-er-yag-laser-and-ultrasonic-scaler-in-the-treatment-of-moderate-chronic-periodontitis-a-randomized-clinical-trial
#4
Reza Birang, Jaber Yaghini, Naeimeh Nasri, Nasim Noordeh, Pedram Iranmanesh, Alireza Saeidi, Narges Naghsh
Introduction: Periodontitis is an inflammatory periodontal disease that leads to tooth loss. Recently laser has been introduced as an alternative treatment for periodontitis. The aim of the present study was to compare the effect of Erbium-doped Yttrium Aluminum Garnet (Er:YAG) laser with ultrasonic scaler in patients with moderate chronic periodontitis. Methods: In this randomized single-blind clinical trial, 27 patients with moderate chronic periodontitis were selected. One quadrant of the patients was treated by Er:YAG laser and the other one by ultrasonic scaler...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28912939/effect-of-er-yag-laser-and-sandblasting-in-recycling-of-ceramic-brackets
#5
Soghra Yassaei, Hossein Aghili, Azadeh Hosseinzadeh Firouzabadi, Hamidreza Meshkani
Introduction: This study was performed to determine the shear bond strength of rebonded mechanically retentive ceramic brackets after recycling with Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser or sandblasting. Methods: Twenty-eight debonded ceramic brackets plus 14 intact new ceramic brackets were used in this study. Debonded brackets were randomly divided into 2 groups of 14. One group was treated by Er:YAG laser and the other with sandblasting. All the specimens were randomly bonded to 42 intact human upper premolars...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28912482/strong-coupling-of-magnons-in-a-yig-sphere-to-photons-in-a-planar-superconducting-resonator-in-the-quantum-limit
#6
R G E Morris, A F van Loo, S Kosen, A D Karenowska
We report measurements made at millikelvin temperatures of a superconducting coplanar waveguide resonator (CPWR) coupled to a sphere of yttrium-iron garnet. Systems hybridising collective spin excitations with microwave photons have recently attracted interest for their potential quantum information applications. In this experiment the non-uniform microwave field of the CPWR allows coupling to be achieved to many different magnon modes in the sphere. Calculations of the relative coupling strength of different mode families in the sphere to the CPWR are used to successfully identify the magnon modes and their frequencies...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912147/performance-of-a-pet-insert-for-high-resolution-small-animal-pet-mr-imaging-at-7t
#7
Greg Stortz, Jonathan D Thiessen, Daryl Bishop, Muhammad S Khan, Piotr Kozlowski, Fabrice Retière, Graham Schellenberg, Ehsan Shams, Xuezhu Zhang, Christopher J Thompson, Andrew Goertzen, Vesna Sossi
We present the characterization of a compact magnetic resonance (MR) compatible positron emission tomography (PET) insert for simultaneous pre-clinical PET/MR imaging. While specifically designed with the strict size constraint to fit inside the 114 mm inner diameter of the BGA-12S gradient coil used in the Bruker 70/20 and 94/20 series of small animal MR imaging (MRI) systems, the insert can be easily installed in any appropriate MRI scanner or used as a stand-alone PET system. Methods: The insert is made from a ring of 16 detector-blocks each made from depth-of-interaction capable dual-layer-offset arrays of cerium-doped lutetium-yttrium oxyorthosilicate crystals read out by silicon photomultiplier (SiPM) arrays...
September 14, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28903005/afterglow-luminescence-in-wet-chemically-synthesized-inorganic-materials-ultra-long-room-temperature-phosphorescence-instead-of-persistent-luminescence
#8
Atul D Sontakke, Alban Ferrier, Pauline Burner, Vinicius Ferraz Guimarães, Mathieu Salaun, Vincent Maurel, Isabelle Gautier-Luneau, Alain Ibanez, Bruno Viana
Wet-chemically synthesized amorphous yttrium-aluminum-borates (a-YAB) exhibit intense visible photoluminescence (PL). Preliminary investigations revealed a correlation of PL with the presence of carbon-related impurities; however their exact nature is still under investigation. These powders also exhibit afterglow luminescence that lasts for several seconds at room-temperature (RT). A comparison with persistent phosphors and phosphorescent dye revealed that the afterglow in a-YAB is a phosphorescence phenomenon and not the persistence luminescence, which is more common in inorganic solids...
September 13, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28902765/low-dose-90y-pet-ct-imaging-optimized-for-lesion-detectability-and-quantitative-accuracy-a-phantom-study-to-assess-the-feasibility-of-pretherapy-imaging-to-plan-the-therapeutic-dose
#9
Maryam Khazaee, Alireza Kamali-Asl, Parham Geramifar, Arman Rahmim
OBJECTIVE: The overall aim of this work is to optimize the reconstruction parameters for low-dose yttrium-90 (Y) PET/computed tomography (CT) imaging, and to determine Y minimum detectable activity, in an endeavor to investigate the feasibility of performing low-dose Y imaging in-vivo to plan the therapeutic dose in radioembolization. MATERIALS AND METHODS: This study was carried out using a Siemens Biograph 6 True Point PET/CT scanner. A Jaszczak phantom containing five hot syringes was imaged serially over 15 days...
September 11, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28900709/pretransplant-intra-arterial-liver-directed-therapy-does-not-increase-the-risk-of-hepatic-arterial-complications-in-liver-transplantation-a-single-center-10-year-experience
#10
Joseph R Kallini, Ahmed Gabr, Rehan Ali, Nadine Abouchaleh, Ahsun Riaz, Talia Baker, Laura Kulik, Juan Caicedo, Riad Salem, Robert J Lewandowski
PURPOSE: To investigate the association between pretransplant intra-arterial liver-directed therapy (IAT) for hepatocellular carcinoma (HCC) and hepatic arterial complications (HAC) in orthotopic liver transplantation (OLT) [namely hepatic artery thrombosis (HAT) and/or the need for hepatic arterial conduit]. METHODS: A total of 175 HCC patients (mean age: 60 years) underwent IAT with either transarterial chemoembolization or yttrium-90 (90Y) transarterial radioembolization prior to OLT between 2003 and 2013...
September 12, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28894793/infiltrative-hepatocellular-carcinoma-with-portal-vein-tumor-thrombosis-treated-with-a-single-high-dose-y90-radioembolization-and-subsequent-liver-transplantation-without-a-recurrence
#11
Meaghan S Dendy, Juan C Camacho, Johannes M Ludwig, Alyssa M Krasinskas, Stuart J Knechtle, Hyun S Kim
BACKGROUND: Infiltrative hepatocellular carcinoma with macrovascular invasion is a relatively rare presentation and usually fatal disease. METHODS: Both patients exceeded Milan and University of California-San Francisco (UCSF) criteria, and per Barcelona Clinic Liver Cancer group guidelines, they were enrolled in a prospective open-label radioembolization phase II trial that gave them optimized lobar doses of Yttrium-90 as solely the first-line therapy without concomitant or additional pharmacological or locoregional therapies...
September 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28892584/evidence-of-organic-luminescent-centers-in-sol-gel-synthesized-yttrium-aluminum-borate-matrix-leading-to-bright-visible-emission
#12
Pauline Burner, Atul D Sontakke, Mathieu Salaün, Michel Bardet, Jean-Marie Mouesca, Serge Gambarelli, Anne-Laure Barra, Alban Ferrier, Bruno Viana, Alain Ibanez, Vincent Maurel, Isabelle Gautier-Luneau
Yttrium aluminum borate (YAB) powders prepared by sol-gel process have been investigated to understand their photoluminescence (PL) mechanism. The amorphous YAB powders exhibit bright visible PL from blue emission for powders calcined at 450 °C to broad white PL for higher calcination temperature. Thanks to 13C labelling, NMR and EPR studies show that propionic acid initially used to solubilize the yttrium nitrate is decomposed into aromatic molecules confined within the inorganic matrix. DTA-TG-MS analyses show around 2 wt % of carbogenic species...
September 11, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28892056/observation-of-the-spin-nernst-effect
#13
S Meyer, Y-T Chen, S Wimmer, M Althammer, T Wimmer, R Schlitz, S Geprägs, H Huebl, D Ködderitzsch, H Ebert, G E W Bauer, R Gross, S T B Goennenwein
The observation of the spin Hall effect triggered intense research on pure spin current transport. With the spin Hall effect, the spin Seebeck effect and the spin Peltier effect already observed, our picture of pure spin current transport is almost complete. The only missing piece is the spin Nernst (-Ettingshausen) effect, which so far has been discussed only on theoretical grounds. Here, we report the observation of the spin Nernst effect. By applying a longitudinal temperature gradient, we generate a pure transverse spin current in a Pt thin film...
September 11, 2017: Nature Materials
https://www.readbyqxmd.com/read/28890809/a-single-institute-retrospective-trial-of-concurrent-chemotherapy-with-sir-spheres-%C3%A2-versus-sir-spheres-%C3%A2-alone-in-chemotherapy-resistant-colorectal-cancer-liver-metastases
#14
May Cho, Jonathan Kessler, John J Park, Aram Lee, Jun Gong, Gagandeep Singh, Yi-Jen Chen, Philip H G Ituarte, Marwan Fakih
BACKGROUND: The use of selective internal radiation therapy with yttrium 90 resin microspheres (SIR-Spheres(®)) in chemotherapy-resistant colorectal cancer liver metastases has been associated with favorable progression-free survival (PFS) and overall survival when given alone or concurrently with chemotherapy. We conducted a single institute retrospective trial to explore the potential impact of SIR-Spheres(®) with concurrent chemotherapy vs. SIR-Spheres(®) alone on liver PFS in patients with colorectal liver metastases (CRLM)...
August 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28890621/soft-tissue-applications-of-er-cr-ysgg-laser-in-pediatric-dentistry
#15
Gyanendra Kumar, Ferah Rehman, Vivek Chaturvedy
Soft tissue laser, such as diode and Nd:YAG lasers were initially used in soft tissue lesions because of its increased success rate. It was because of the fact that these lasers were well-absorbed by chromophores, such as hemoglobin and melanin which are found abundant in the oral mucosa. The introduction of erbium family in 1990 comprising the Er:YAG and Er,Cr:YSGG lasers made the hard tissue laser a boon for dentistry. Erbium, chromium-doped yttrium, scandium, gallium and garnet (Er,Cr:YSGG) was introduced in 1997 for the surgical needs of clinical dentistry in general practice...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28888827/tumor-dose-response-in-yttrium-90-resin-microsphere-embolization-for-neuroendocrine-liver-metastases-a-tumor-specific-analysis-with-dose-estimation-using-spect-ct
#16
Orapin Chansanti, Younes Jahangiri, Yusuke Matsui, Akira Adachi, Yindee Geeratikun, John A Kaufman, Kenneth J Kolbeck, Jeffrey S Stevens, Khashayar Farsad
PURPOSE: To evaluate dose-response relationship in yttrium-90 ((90)Y) resin microsphere radioembolization for neuroendocrine tumor (NET) liver metastases using a tumor-specific dose estimation based on technetium-99m-labeled macroaggregated albumin ((99m)Tc MAA) single photon emission computed tomography (SPECT)-CT. MATERIALS AND METHODS: Fifty-five tumors (mean size 3.9 cm) in 15 patients (10 women; mean age 57 y) were evaluated. Tumor-specific absorbed dose was estimated using a partition model...
September 6, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28881497/therapies-for-advanced-stage-hepatocellular-carcinoma-with-macrovascular-invasion-or-metastatic-disease-a-systematic-review-and-meta-analysis
#17
REVIEW
Richard S Finn, Andrew X Zhu, Farah Wigdan, Jehad Almasri, Feras Zaiem, Larry J Prokop, Mohammad Hassan Murad, Khaled Mohammed
Hepatocellular carcinoma (HCC) is a complex disease most commonly arising in the background of chronic liver disease. In the past two decades there has been a significant increase in our understanding of both the clinical and molecular heterogeneity of HCC. There has been a robust increase in clinical trial activity in patients with poor prognostic factors such as macrovascular invasion and extrahepatic spread. We aimed to synthesize the evidence for the treatment of patients with advanced HCC based on these baseline characteristics including patients with both Child-Pugh scores of A and B...
September 7, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28879621/survival-analysis-of-advanced-hcc-treated-with-radioembolization-comparing-impact-of-clinical-performance-status-versus-vascular-invasion-metastases
#18
Rehan Ali, Ahmed Gabr, Nadine Abouchaleh, Ali Al Asadi, Ronald A Mora, Laura Kulik, Michael Abecassis, Ahsun Riaz, Riad Salem, Robert J Lewandowski
PURPOSE: In this study, we aim to compare the effects of prognostic indicators on survival analysis for Barcelona Clinic Liver Cancer (BCLC) C patients undergoing yttrium-90 radioembolization (Y-90). METHODS: A prospectively acquired database (2003-2017) for BCLC C hepatocellular carcinoma (HCC) patients that underwent radioembolization with Y-90 was searched. The criteria for BCLC C status (Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 1 or 2, metastases, and/or portal vein thrombosis (PVT)) were recorded...
September 6, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28875824/applications-of-bauxite-residue-a-mini-review
#19
Ajay S Verma, Narendra M Suri, Suman Kant
Bauxite residue is the waste generated during alumina production by Bayer's process. The amount of bauxite residue (40-50 wt%) generated depends on the quality of bauxite ore used for the processing. High alkalinity and high caustic content in bauxite residue causes environmental risk for fertile soil and ground water contamination. The caustic (NaOH) content in bauxite residue leads to human health risks, like dermal problems and irritation to eyes. Moreover, disposal of bauxite residue requires a large area; such problems can only be minimised by utilising bauxite residue effectively...
September 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28875374/yttrium-90-radioembolization-treatment-for-unresectable-hepatocellular-carcinoma-a-single-centre-prognostic-factors-analysis
#20
C Floridi, F Pesapane, S A Angileri, D De Palma, F Fontana, F Caspani, A Barile, A Del Sole, C Masciocchi, G Lucignani, G Carrafiello
The aim of this study was to evaluate the efficacy and the safety of Y90 radioembolization (Y90-RE) in patients with unresectable hepatocellular carcinoma (HCC) analysing our results and correlating them with independent prognostic factors for overall survival (OS) and for complications. Forty-three patients with advanced inoperable HCC including those with multiple bilobar lesions or portal vein thrombosis (PVT) treated with Y90-RE were reviewed. Treatment efficacy and safety were evaluated. Survival was calculated by the Kaplan-Meier method...
September 5, 2017: Medical Oncology
keyword
keyword
33485
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"