keyword
MENU ▼
Read by QxMD icon Read
search

CAT scans

keyword
https://www.readbyqxmd.com/read/28327698/accuracy-and-reliability-of-different-cone-beam-computed-tomography-cbct-devices-for-structural-analysis-of-alveolar-bone-in-comparison-with-multislice-ct-and-micro-ct
#1
Jeroen Van Dessel, Laura Ferreira Pinheiro Nicolielo, Yan Huang, Walter Coudyzer, Benjamin Salmon, Ivo Lambrichts, Reinhilde Jacobs
OBJECTIVE: The aim of this study was to assess whether cone beam computed tomography (CBCT) may be used for clinically reliable alveolar bone quality assessment in comparison to its clinical alternatives, multislice computed tomography and the gold standard (micro-CT). MATERIALS AND METHODS: Six dentate mandibular bone samples were scanned with seven CBCT devices (ProMax 3D Max, NewTom GiANO, Cranex 3D, 3D Accuitomo 170, Carestream 9300, Scanora 3D, I-CAT Next generation), one micro-CT scanner (SkyScan 1174) and one MSCT machine (Somatom Definition Flash) using two protocols (standard and high-resolution)...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28321347/association-of-chronic-pancreatitis-and-malignant-main-duct-ipmn-a-rare-but-difficult-clinical-problem
#2
Zoltán Berger, Hernán De La Fuente, Manuel Meneses, Fernanda Matamala, Makarena Sepúlveda, Claudia Rojas
We report the case of a 70-year-old woman who consulted for recurrent short episodes of mild-to-moderate abdominal pain. Dilated main pancreatic duct was seen on CAT scan and magnetic resonance, with multiple calcifications and intraductal stones, typical in CP. However, for a more pronounced cystic dilatation in the pancreatic head, we could not exclude the coexistence of a main duct IPMN. ERCP was performed, with pancreatic sphincterotomy and extraction of pancreatic stones, but, at the same time, mucin extrusion was seen from the dilated duct through the papilla...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28287313/the-early-days-of-commercial-ft-ir-spectrometry-a-personal-perspective
#3
Peter R Griffiths
The development of Fourier transform infrared (FT-IR) spectrometers in the mid-1960s followed along three lines. Interferometers for far-infrared FT spectrometry typically had a slow scan speed and the beam of radiation was modulated by a rotating chopper. Several instruments based on this system were developed commercially. Very high-resolution near-infrared FT spectrometers were based on cats-eye retroreflectors mounted in a step-scan interferometer; the beam of radiation was usually modulated by dithering one of the cats-eyes (phase modulation)...
March 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28244030/characterization-of-a-bacillus-thuringiensis-chitinase-that-binds-to-cellulose-and-chitin
#4
Shotaro Honda, Toshiyuki Kunii, Kenta Nohara, Satoshi Wakita, Yasusato Sugahara, Masao Kawakita, Fumitaka Oyama, Masayoshi Sakaguchi
Bacillus thuringiensis is a Gram-positive soil bacterium that is known to be a bacterial biopesticide that produces insecticidal proteins called crystal proteins (Cry). In the insecticidal process, chitinases are suggested to perforate the peritrophic membrane barrier to facilitate the invasion of the Cry proteins into epithelial membranes. A chitinase gene from B. thuringiensis was successfully expressed in a soluble form in Escherichia coli, and the gene product was purified and characterized. The purified recombinant enzyme, BthChi74, hydrolyzed an artificial substrate, 4-nitrophenyl N,N'-diacetyl-β-D-chitobioside [4NP-(GlcNAc)2], and the natural substrates, colloidal chitin and crystalline α-chitin, but it did not hydrolyze cellulose...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28217567/painful-knee-prosthesis-ct-scan-to-assess-patellar-angle-and-implant-malrotation
#5
REVIEW
Antonio Spinarelli, Vito Pesce, Caterina Campagna, Giuseppe Maccagnano, Biagio Moretti
BACKGROUND: According to literature, the incidence of pain in knee prostheses is on the increase. In the last decade Authors have focused attention on rotational alignment of the prosthetic components. The aim of this study is to evaluate the efficiency of a new angle, which we define as patellar angle, in order to achieve early diagnosis of malrotation. METHODS: We set up a retrospective observational study recruiting 100 subjects who had undergone total knee prosthesis...
October 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28216191/is-the-internet-a-suitable-patient-resource-for-information-on-common-radiological-investigations-radiology-related-information-on-the-internet
#6
Dermot J Bowden, Lee-Chien Yap, Declan G Sheppard
RATIONALE AND OBJECTIVE: This study aimed to assess the quality of Internet information about common radiological investigations. MATERIALS AND METHODS: Four search engines (Google, Bing, Yahoo, and Duckduckgo) were searched using the terms "X-ray," "cat scan," "MRI," "ultrasound," and "pet scan." The first 10 webpage results returned for each search term were recorded, and their quality and readability were analyzed by two independent reviewers (DJB and LCY), with discrepancies resolved by consensus...
February 17, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28195353/screening-of-cadmium-and-copper-phytoremediation-ability-of-tagetes-erecta-using-biochemical-parameters-and-scanning-electron-microscopy-energy-dispersive-x-ray-microanalysis
#7
Sunayana Goswami, Suchismita Das
Tagetes erecta thrived in phytotoxic levels of cadmium (Cd; 50-300 mg kg(-1) ) and copper (Cu; 150-400 mg kg(-1) ) for 21 d. It accumulated high metal contents in its above-ground tissues (3675 mg Cd kg(-1) dry wt and 3948 mg Cu kg(-1) dry wt) and showed greater root to shoot translocation and a high extraction coefficient, all of which pointed toward its potential as a hyperaccumulator. Both Cd stress and Cu stress reduced the plant biomass, foliar area, and number. In addition, there were significant declines in pigment contents as well as boosts in lipid peroxidation levels...
February 13, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28188092/-isolation-of-pseudomonas-stutzeri-from-an-odontogenic-inflammatory-cyst-diagnostic-relevance
#8
Susana Molgatini, Eduardo Rey, Jorge Basilaki, Christian Mosca, Rafael Galante, Laura Gliosca
Pseudomonas stutzeri is distributed widely in the environment, and occupies different ecological niches. However, it is found in clinically relevant infections as an opportunistic pathogen. Isolation of P. stutzeri from an odontogenic inflammatory cyst is an uncommon microbiological finding that has not been reported to date. In the case presented here, the bacterium was isolated from surgical material obtained from excision of an inflammatory odontogenic cyst located in the tooth 1.2, and presenting with concomitant pulp necrosis...
February 7, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28184155/risk-factors-for-fev1-decline-in-mild-copd-and-high-risk-populations
#9
Shujing Chen, Changhui Wang, Bing Li, Guochao Shi, Huiping Li, Jing Zhang, Yutong Gu, Jian Zhou, Yuanlin Song, Chunxue Bai
BACKGROUND: Early diagnosis of COPD is often not achieved due to limited recognition and limited access to the pulmonary function test. Our hypothesis was that lung function decline may be different between populations with mild COPD and those who are at high risk and do not receive treatment. PATIENTS AND METHODS: Subjects with mild COPD and those from a high-risk COPD population were recruited from a community-based COPD epidemiological study after obtaining consent...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28183644/facile-preparation-of-poly-methylene-blue-modified-carbon-paste-electrode-for-the-detection-and-quantification-of-catechin
#10
G Manasa, Ronald J Mascarenhas, Ashis K Satpati, Ozma J D'Souza, A Dhason
Free radicals are formed as byproducts of metabolism, and are highly unstable due to the presence of unpaired electrons. They readily react with other important cellular components such as DNA causing them damage. Antioxidants such as (+)-catechin (CAT), neutralize free radicals in the blood stream. Hence there is a need for detection and quantification of catechin concentration in various food sources and beverages. Electro-oxidative properties of catechin were investigated using cyclic voltammetry (CV) and differential pulse voltammetry (DPV)...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28104425/curiosity-killed-the-cat-scan
#11
EDITORIAL
Holly E Hinson
No abstract text is available yet for this article.
January 16, 2017: Resuscitation
https://www.readbyqxmd.com/read/28048796/mo-fg-campus-jep2-04-comparison-study-for-ct-and-mr-only-prostate-imrt-treatment-planning-a-framework-for-the-estimation-of-relative-contribution-of-body-contour-discrepancies-tissue-stratification-and-hu-red-conversion-to-the-overall-dose-difference
#12
M Maspero, P R Seevinck, G Schubert, M Hoesl, G J Meijer, M A Viergever, Jjw Lagendijk, Cat van den Berg
PURPOSE: To compare dose of prostate IMRT plans on CT vs MR-based pseudo-CT (pCT). A framework is demonstrated to isolate various confounding factors causing dose differences. This approach will be valuable for medical physicists interested in commissioning strategy of MR-only dose planning. METHODS: A retrospective study was conducted on fourteen prostate patients that underwent CT and MRI scans. MR was equipped with an in-house-developed flat table-top and coil support...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28039833/accumulation-efficiency-genotoxicity-and-antioxidant-defense-mechanisms-in-medicinal-plant-acalypha-indica-l-under-lead-stress
#13
Perumal Venkatachalam, Narayanan Jayalakshmi, Natesan Geetha, Shivendra V Sahi, Nilesh C Sharma, Eldon R Rene, Santosh K Sarkar, Paulo J C Favas
The present study was designed to assess the physiological and biochemical changes in roots and shoots of the herb Acalypha indica grown under hydroponic conditions during exposure to lead (Pb) (100-500 mg L(-1)) for 1-12 d. The accumulation of Pb by A. indica plants was found to be 121.6 and 17.5 mg g(-1) dry weight (DW) in roots and shoots, respectively, when exposed to a Pb concentration of 500 mg L(-1). The presence of Pb ions in stem, root and leaf tissues was confirmed by scanning electron microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDX) analyses...
December 20, 2016: Chemosphere
https://www.readbyqxmd.com/read/28039072/for-special-issue-on-no-in-plants-lead-induced-stress-which-triggers-the-production-of-nitric-oxide-no-and-superoxide-anion-o2-%C3%A2-in-arabidopsis-peroxisomes-affects-catalase-activity
#14
Francisco J Corpas, Juan B Barroso
Lead (Pb) contamination has a toxic effect on plant metabolisms, leading to a decrease in biomass production. The free radical nitric oxide (NO) is involved in the mechanism of response to a wide range of abiotic stresses. However, little is known about the interplay between Pb-induced stress and NO metabolism. Peroxisomes are sub-cellular compartments involved in multiple cellular metabolic pathways which are characterized by an active nitro-oxidative metabolism. Thus, Arabidopsis thaliana mutants expressing cyan fluorescent protein (CFP) through the addition of peroxisomal targeting signal 1 (PTS1), which enables peroxisomes to be visualized in vivo by confocal laser scanning microscopy (CLSM) combined with fluorescent probes for nitric oxide (NO), superoxide anion (O2(·-)) and peroxynitrite (ONOO(-)), were used to evaluate the potential involvement of these organelles in the mechanism of response to 150 μM lead-induced stress...
December 27, 2016: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28018954/regression-of-metastatic-radiation-chemotherapy-resistant-uterine-serous-carcinoma-overexpressing-her2-neu-with-trastuzumab-emtansine-tdm-1
#15
Alessandro D Santin, Stefania Bellone, Natalia Buza, Peter E Schwartz
BACKGROUND: The management of uterine-serous-carcinoma (USC) no longer amenable to treatment with surgery, radiation and/or chemotherapy remains dismal. Alternative therapeutic options are desperately needed. CASE: We describe the case of a heavily pretreated 74-year-old patient with a recurrent USC overexpressing HER2/neu at 3 + level by IHC treated with the anti-HER2/neu antibody-drug-conjugate (ADC) trastuzumab-emtansine (TDM-1-Kadcyla-Genentech/Roche). She experienced a remarkable clinical response to TDM-1 with a complete resolution of a large metastatic, radiation/chemotherapy resistant tumor deposit in her abdominal wall muscle confirmed by multiple CAT scans and a prolonged systemic control of her disease...
February 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/27990508/quantification-of-bone-quality-using-different-cone-beam-computed-tomography-devices-accuracy-assessment-for-edentulous-human-mandibles
#16
Jeroen Van Dessel, Laura Ferreira Pinheiro Nicolielo, Yan Huang, Pieter Slagmolen, Constantinus Politis, Ivo Lambrichts, Reinhilde Jacobs
PURPOSE: To determine the accuracy of the latest cone beam computed tomography (CBCT) machines in comparison to multi-slice computer tomography (MSCT) and micro computed tomography (micro-CT) for objectively assessing trabecular and cortical bone quality prior to implant placement. MATERIALS AND METHODS: Eight edentulous human mandibular bone samples were scanned with seven CBCT scanners (3D Accuitomo 170, i-CAT Next Generation, ProMax 3D Max, Scanora 3D, Cranex 3D, Newtom GiANO and Carestream 9300) and one MSCT system (Somatom Definition Flash) using the clinical exposure protocol with the highest resolution...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27987304/identification-of-lanthanum-specific-peptides-for-future-recycling-of-rare-earth-elements-from-compact-fluorescent-lamps
#17
Franziska L Lederer, Susan B Curtis, Stefanie Bachmann, W Scott Dunbar, Ross T A MacGillivray
As components of electronic scrap, rare earth minerals are an interesting but little used source of raw materials that are highly important for the recycling industry. Currently, there exists no cost-efficient technology to separate rare earth minerals from an electronic scrap mixture. In this study, phage surface display has been used as a key method to develop peptides with high specificity for particular inorganic targets in electronic scrap. Lanthanum phosphate doped with cerium and terbium as part of the fluorescent phosphors of spent compact fluorescent lamps (CFL) was used as a target material of economic interest to test the suitability of the phage display method to the separation of rare earth minerals...
May 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/27931150/in-vitro-synergism-of-a-water-insoluble-fraction-of-uncaria-tomentosa-combined-with-fluconazole-and-terbinafine-against-resistant-non-candida-albicans-isolates
#18
Renata Cougo Moraes, Anderson Ramos Carvalho, Aline Jacobi Dalla Lana, Samuel Kaiser, Bruna Pippi, Alexandre Meneghello Fuentefria, George González Ortega
CONTEXT: Uncaria tomentosa D.C. (Rubiaceae) has several biological activities, including activity against resistant Candida strains. The synergistic interaction with terbinafine or fluconazole can be an important alternative to overcome this resistance. OBJECTIVES: The potential synergy between a water insoluble fraction (WIF) from Uncaria tomentosa bark and the antifungals terbinafine (TRB) and fluconazole (FLZ) against non-Candida albicans resistant strains was investigated...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27918152/computed-tomographic-characteristics-of-the-thyroid-glands-in-eight-hyperthyroid-cats-pre-and-postmethimazole-treatment-compared-with-seven-euthyroid-cats
#19
Jennifer L Bush, Sarah Nemanic, Jana Gordon, Gerd Bobe
Hyperthyroidism is the most common feline endocrinopathy; thyroid computed tomography (CT) may improve disease detection and methimazole dose selection. Objectives of this experimental pre-post with historical case-control study were to perform thyroid CT imaging in awake or mildly sedated hyperthyroid cats, compare thyroid gland CT appearance in euthyroid and hyperthyroid cats pre- and postmethimazole treatment, and determine whether thyroid size or attenuation correlate with methimazole dose needed for euthyroidism...
March 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27861566/findings-on-thoracic-computed-tomography-scans-and-respiratory-outcomes-in-persons-with-and-without-chronic-obstructive-pulmonary-disease-a-population-based-cohort-study
#20
Wan C Tan, Cameron J Hague, Jonathon Leipsic, Jean Bourbeau, Liyun Zheng, Pei Z Li, Don D Sin, Harvey O Coxson, Miranda Kirby, James C Hogg, Rekha Raju, Jeremy Road, Denis E O'Donnell, Francois Maltais, Paul Hernandez, Robert Cowie, Kenneth R Chapman, Darcy D Marciniuk, J Mark FitzGerald, Shawn D Aaron
BACKGROUND: Thoracic computed tomography (CT) scans are widely performed in clinical practice, often leading to detection of airway or parenchymal abnormalities in asymptomatic or minimally symptomatic individuals. However, clinical relevance of CT abnormalities is uncertain in the general population. METHODS: We evaluated data from 1361 participants aged ≥40 years from a Canadian prospective cohort comprising 408 healthy never-smokers, 502 healthy ever-smokers, and 451 individuals with spirometric evidence of chronic obstructive pulmonary disease (COPD) who had thoracic CT scans...
2016: PloS One
keyword
keyword
100795
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"