TY - JOUR. T1 - MO‐B‐351‐02. T2 - Dual‐Energy CT: Dual‐KV Techniques and Clinical Applications. AU - McCollough, Cynthia H. PY - 2008/1/1. Y1 - 2008/1/1. N2 - In CT imaging, materials having different chemical compositions can be represented by the same, or very similar, CT numbers, making the differentiation and classification of different types of tissues extremely challenging. In dual energy CT, an additional attenuation measurement is obtained at a second energy, allowing the differentiation of the two materials. Previously implemented in the 1980s, dual‐kV techniques are again available on clinical CT systems, accomplished with either slow or fast tube potential switching or dual‐source methods. The fundamental principles of dual‐kV techniques and their relative strengths and weaknesses will be reviewed. Clinical applications of dual‐kV CT imaging will be described, including: 1) automatic removal of bony anatomy, including calcified plaque, from a CT data set; 2) ...

TY - JOUR. T1 - SU‐F‐BRA‐12. T2 - Comprehensive Uncertainty Analysis of Proton Stopping‐Power‐Ratio Estimation Using a KV‐MV Dual Energy CT Scanner (DECT) for Margin Reduction. AU - Yang, M.. AU - Zhu, X.. AU - Clayton, J.. AU - Virshup, G.. AU - Mohan, R.. AU - Dong, L.. PY - 2011. Y1 - 2011. N2 - Purpose: To analyze the uncertainties in proton stopping‐power‐ratios (SPRs) calculation using a kV‐MV DECT and evaluate the potential for margin reduction for proton therapyMethods: Sources of uncertainties in SPR estimation were broken into five categories: CT imaging uncertainties, CT modeling error, uncertainties in the mean‐excitation‐energy, SPR variation with proton energy and uncertainties due to variations in human tissue compositions. Additionally, lung, soft and bone tissues were analyzed separately because their uncertainties are too different to be considered as the same tissue type. The uncertainty of 1‐standard‐deviation (1‐SD) was determined for each ...

Radiologists use Dual Energy CT (DECT) for pulmonary CT angiography in children which enables the evaluation of the pulmonary arteries and lung perfusion from a single contrast-enhanced CT examination. Read more.

Purchase Dual Energy CT: Applications in Head and Neck and Neurologic Imaging, An Issue of Neuroimaging Clinics of North America, Volume 27-3 - 1st Edition. Print Book & E-Book. ISBN 9780323532433, 9780323532440

Results Twenty-five patients were included. Patients were recruited from a population of 387 patients with CKD stages 4 or 5, 208 were excluded because they did not meet the in-/exclusion criteria, 58 were not treated at the outpatient clinic anymore at time of inclusion and the rest declined participation. The mean (SD) age of the participants was 65 (12), 18 were man and the mean (SD) duration of CKD was 5.3 (3.8) years.. Twelve out of 25 patients (48%) had any sign of gout on DECT or US, nine patients (36%) had MSU depositions, four (16%) had a tophus, seven (28%) had a double contour sign and three patients (13%) had a positive DECT. Patients with MSU depositions were older (73 vs. 60 years, p=0.007). Gout signs were far more common in the high uric acid group, this is an uric acid of 0.42 or higher (table 1), although this did not reached a statistical significance. ...

Dual-energy CT has recently evolved as a promising tool with multiple clinical applications such as improved lesion detection, lesion characterisation, material quantification as well as metal artefact reduction, lower radiation dose and contrast volumes. The workshop includes a series of lectures followed by a hands-on workshop conducted in small groups with experienced faculty members.

A CT system includes a gantry, an x-ray source, a generator configured to energize the x-ray source to a first kVp and to a second kVp, a detector, and a controller. The controller is configured energ

Authors: Zhao, Yongxia , Wu, Yanmin , Zuo, Ziwei , Suo, Hongna , Zhao, Sisi , Zhang, Haisong Article Type: Research Article Abstract: OBJECTIVE: To investigate the differences in imaging quality and radiation dose in CT pulmonary angiography (CTPA) by using fast-kV switching dual energy CT imaging and 3D Smart mA modulation at different body mass indices (BMIs) and at different noise index (NI) values with an adaptive statistical iterative reconstruction (ASIR) algorithm. METHODS: Four hundred patients who underwent CTPA were equally divided into two groups: A (18.5 kg/m2 ≦ BMI ,24.9 kg/m2 ) and B (24.9 kg/m2 ≦ BMI ≦ 4.9 kg/m2 ). The groups were randomly subdivided into four subgroups (n = 50): A1-A4 and B1-B4. The patients in subgroups A1 …and B1 underwent fast-kV switching dual energy CT imaging. The other patients underwent 3D Smart mA modulation with the ASIR algorithm at NI values 26, 36, and 46 for A2/B2, A3/B3, and A4/B4, respectively. The signal-to-noise ratio (SNR) and ...

CT Scan Protocols, CT Protocols by Manufacturer- GE, Siemens, Phillips, Toshiba. Slice Counts- Dual Source, 320 slice, 256 slice, 128 slice, 64 slice, 16 slice, 4 slice, single detector.

18 FDG PET and 18 FDG PET-CT are considered superior to standard CT alone for the characterization of pulmonary nodules, evaluation of thoracic lymph

Purpose: We propose a novel lung functional imaging method to determine the spatial distribution of xenon (Xe) gas in a single inhalation as a measure of regional ventilation. We compare Xe-CT ventilation to single-photon emission CT (SPECT) ventilation, which is the current clinical reference. Regional lung ventilation information may be useful for the diagnosis and monitoring of pulmonary diseases such as COPD, radiotherapy planning, and assessing the progression of toxicity after radiation therapy. Methods: In an IRB-approved clinical study, Xe-CT and SPECT ventilation scans were acquired for three patients including one patient with severe emphysema and two lung cancer patients treated with radiotherapy. For Xe- CT, we acquired two breath-hold single energy CT images of the entire lung with inspiration of 100% O2 and a mixture of 70% Xe and 30% O2, respectively. A video biofeedback system was used to achieve reproducible breath-holds. We used deformable image registration to align the ...

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Purpose: In spectral CT, basis material decomposition is commonly used to generate a set of basis images showing the material composition at each point in the field of view. The noise in these images typically contains anticorrelations between the different basis images, which leads to increased noise in each basis image. These anticorrelations can be removed by changing the basis functions used in the material decomposition, but the resulting basis images can then no longer be used for quantitative measurements. Recent studies have demonstrated that reconstruction methods which take the anticorrelations into account give reduced noise in the reconstructed image. The purpose of this work is to analyze an analytically solvable denoising model problem and investigate its effect on the noise level and bias in the image as a function of spatial frequency. Method: A denoising problem with a quadratic regularization term is studied as a mathematically tractable model for such a reconstruction method. ...

PURPOSE: The aim of this study was to evaluate metal artifact reduction (MAR) techniques, provided by four vendors, in CT imaging of hip prostheses.. METHOD AND MATERIALS: A water phantom containing hip prostheses mounted in calf bones was scanned with four CT scanners; Philips Ingenuity; Toshiba Aquilion ONE Vision edition; GE Discovery 750 HD and Siemens SOMATOM Definition Flash. An uncorrected (reference) image was obtained for every CT and compared with images acquired with the scanner specific MAR technique; either monoenergetic reconstruction of Dual Energy CT (DECT) data (GE and Siemens) or the use of a MAR algorithm software (Philips and Toshiba), or a combination of the two (GE). The MAR techniques were applied for varying tube voltage, kernel and reconstruction technique. The reference images were quantitatively compared to the MAR images by analyzing the noise and the CT number accuracy in region of interests (ROIs). Visual grading was performed by five radiologists based on ten image ...

Affiliation：熊本大学,大学院生命科学研究部(医),特任准教授, Research Field：Radiation science, Keywords：4D-CT,放射線,フィルターバックプロジェクション法,再構成アルゴリズム,画像診断学（含放射線診断学）,Dual Energy CT,冠動脈バイパス術,逐次近似再構成,CT,冠動脈CT, # of Research Projects：5, # of Research Products：16, Ongoing Project：多層検出器CTによるがん治療効果の画像バイオマーカーおよび予後予測システムの開発

A 59-year old male patient was referred to a CT examination to check up on consistent pain in the right ankle. Dual Energy CT was performed.

DECT was performed by independently operating the two tubes of a dual-source CT system (Definition, Siemens) at 140kV and 100kV. In each patient all three DECT data sets were analyzed for blood volume deficits and for delayed enhancement by mapping the iodine content within the myocardium based on the different x-ray spectra. Two independent, blinded observers evaluated SPECT-MPI, cMRI and DECT for fixed/reversible ischemia, and cMRI and DECT for delayed enhancement based.. RESULTS All patients (7 female, mean age 61 years) were successfully imaged with all three modalities. 493 myocardial segments were analyzed, 91 were abnormal at cMRI. Inter-reader agreement for detection of fixed/reversible ischemia and delayed enhancement at DECT was moderate to excellent (k=0.8/0.8-k=0.8). Compared with cMRI, DECT and SPECT-MPI had 92% (92%) sensitivity, 96% (97%) specificity, and 95% (95%) accuracy for detecting myocardial segments with fixed ischemia, respectively. Reversible ischemia was detected with ...

Material decomposition in absorption-based X-ray CT imaging suffers certain inefficiencies when differentiating among soft tissue materials. To address this problem, decomposition techniques turn to spectral CT, which has gained popularity over the last few years. Although proven to be more effective, such techniques are primarily limited to the identification of contrast agents and soft and bone-like materials. In this work, we introduce a novel conditional likelihood, material-decomposition method capable of identifying any type of material objects scanned by spectral CT. The method takes advantage of the statistical independence of spectral data to assign likelihood values to each of the materials on a pixel-by-pixel basis. It results in likelihood images for each material, which can be further processed by setting certain conditions or thresholds, to yield a final material-diagnostic image. The method can also utilize phase-contrast CT (PCI) data, where measured absorption and phase-shift ...

Waste management today is one of the gravest issues which our society has to deal with. With a little effort from each one of us this problem can be dealt with without much investment and effort. In case you are wondering on how this can be done, then the simple answer to it is using Khamba in your household.. Khamba is basically one of the best and 100% nature friendly means through which you can compost waste which is generated in your kitchen. A Khamba is stackable terracotta compost bin, generally of 3 tier. This household waste recycling product works on the principle of aerobic decomposition. Aerobic decomposition is an organic material decomposition process with the help of oxygen. And as a typical Khamba has 3 layers, the decomposition process is rather accelerated one.. How does Khamba work?. As has already been mentioned, there are three tiers in a Khamba. The top two tiers/ pots have nylon mesh as base and can be used interchangeably. While the pot at the bottom is a fixed one with ...

X-ray imaging is an established tool for materials characterization even though it usually has the drawback of not being a quantitative method. This drawback can be overcome by energy-sensitive X-ray imaging methods such as the basis material decomposition method presented in this paper, which can provide quantitative results for materials characterization. ...

Philips Avent DECT Baby Monitor with Temperature Sensor uses DECT technology and it works in zero interference from any other transmitting product, the product can be other baby monitors, cordless phones or mobile as well. It works in data encryption mode that gives a protected connection to make sure that you are only the person who is listening to your baby sound. When we talk about sound quality of this product then sound quality is of high level which is clear in listening to, and the sound is sweet too which wont let you annoying from hearing the voice of your baby. You can hear every tiny giggle, gurgle and hic-up clearly. DECT technology offers high quality of sound to hear your child anytime you want. Its indoor range is up to 50 meters and outdoor range is up to 300 meters. The range can be different for different areas, location, clear signal and other factors that cause interference. It can be operated with rechargeable battery too, it means it is portable and it gives you ...

The aim of this prospective study is to investigate the diagnostic performance of integrated positron emission tomography (PET) /dual-energy computed tomography (DECT) imaging in determining the thoracic nodal status of patients with small-cell lung cancer (SCLC) or non-small-cell lung cancer (NSCLC) and the resulting impact on target volume delineation for radiation therapy planning. This is a single-center prospective study including approximately 50 patients with suspected or confirmed SCLC or NSCLC, referred for a PET study. All patients will be examined on a clinical PET/DECT system, where a dual-energy detector was recently installed. The patient will be placed in the system 70 min after the administration of 5 MBq/kg of 18F-fluorodeoxyglucose (18F-FDG). Then, DECT will be acquired after the injection of 100 mL of iodine contrast medium. A PET scan will be acquired from the top of the skull through the inguinal region. Data analysis will be performed on the PET, CT, and iodine map datasets.

Dual-energy CT refers to the acquisition of computed tomography (CT) datasets at 2 different energy spectra. The recent development of dual-source scanning h...

Introduction Palpitations are a common symptom in the general population. A significant proportion of individuals experiencing palpitations will present to their primary care provider for advice. Many will be referred to a cardiologist for specialist evaluation accounting for up to one-fifth of all cardiology refe ...

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format. By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. To select a subset of the search results, click Selective Export button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export. After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format. ...

The results of this study should be interpreted in the context of the study design and consequent limitations. First, although a study group of 170 patients was reasonable for this initial study, further re-evaluation of our findings with low-tube-voltage acquisitions in larger patient cohorts is necessary. Second, there may be differences regarding the average radiation exposure of neck DECT among various dual-source CT systems. We also expect differences between single- or dual-source 80-kVp CT, and our results from retrospective analysis of the 80-kVp images from DECT should be evaluated in additional studies with phantom measurements. Especially single-source 80-kVp CT may also show a different image quality because the 140-kVp tube in DECT may have an effect on the 80-kVp DECT images. However, 80-kVp neck CT can still be expected to result in a distinct dose reduction.16 DECT may result in a slower scan speed than certain single- or dual-source CT systems, which may lead to more motion ...

We compared nine top-grade 2021 dect 6.0 caller id answering machines over the recent year. Distinguish which dect 6.0 caller id answering machine fits you best. Search by type, model, number of handsets and lines.

OBJECTIVES The aim was to investigate the image quality of dual-energy computed-tomography (DECT) compared to single-energy images at 80 kV and 140 kV in oral tumors. MATERIALS AND METHODS Forty patients underwent a contrast-enhanced DECT scan on a definition flash-CT. Four reconstructions (80 kV, 140 kV, mixed (M), and optimum-contrast (OC)) were assessed by four blinded readers for subjective image quality (10-point scale/10=best). For objective quality assessment, linear attenuation measurements (line density profiles (LDP)) were positioned at the tumor margin, and the difference between minimum and maximum was calculated. Signal-to-noise ratios (SNR) were measured in the tongue. RESULTS The mean image quality for all readers was 5.1±0.3, 8.4±0.3, 8.1±0.2, and 8.3±0.2 for the 140 kV, 80 kV, M, and OC, respectively (P|001 between 140 kV and all others). The mean difference between the minimum and maximum within the LDP was 139.4±59.0, 65.7±29.5, 105.1±46.5, and 118.7±59.4 for the 80 kV,

Radiology is medical specialty that focuses on certain techniques of imaging different parts of the body with different radiological methods. Radiologists then utilize these images to make diagnoses and treat diseases. The initial imaging technology was X-ray technology. More advanced techniques are ultrasound, nuclear medicine, magnetic resonance imaging and computed tomography imaging. Emerging technologies include positron emission technology. These technologies have become famous with their corresponding acronyms. Positron Emission Technology is referred to as PET technology, and magnetic resonance imaging is known as an MRI. Computed tomography is referred to as a CAT scan or a CT scan.. However, X-ray technology is also known as projection radiography. This technology produces a radiograph, and this is the name that the process became known as. Radiographs are taken by projecting X-rays through a patient. This information is then gathered with a device specifically designed to catch these ...

Anyhow, given a site-specific set of such description data element values, one can either parse them and try to find anatomic words or phrases, in order to be adaptable to local variations, or one can just do a straight match on the entire string. In order to better support some of my use cases, particularly extracting anatomy for radiation dose extraction projects, I spent a while working on the parsing descriptions problem, with some success. You can find in the com.pixelmed.anatproc package a bunch of attempts to do this, both for cross-sectional and projection radiography, as well as for multiple languages. By comparison, you might want to look at the RadMapps approach, which just does a straight out full string mapping, which requires one to build a mapping once for any sites list of descriptions, and then maintain it as they evolve. This is the approach being used for the ACRs Dose Index Registry, for example, where they only have to cover a small subset of all possibly procedures. In ...

This book has developed over the past 14 years, during which time we have taught a course on medical imaging systems at Johns Hopkins University. This course started out as a survey course, and then evolved according to our mutual interests and inclinations into a course that emphasizes thesignals and systemsaspects--or more precisely, the signal processing aspects--of medical imaging. With signal processing as the fundamental viewpoint, this book covers the most importantimaging modalitiesin radiology: projection radiography, x-ray computed tomography, nuclear medicine, ultrasound imaging, and magnetic resonance imaging. The authors expect the reader to be familiar with signals and systems, which are usually covered in the sophomore year of most engineering curricula, and with elementary probability. Freshman courses in physics, chemistry, and calculus are also assumed. The book is organized into parts emphasizing key overall conceptual divisions, as follows. Part I introduces basic imaging ...

Meetings by Mail presents the SCBT-MR (Society of Computed Body Tomography and Magnetic Resonance) 40th Annual Course (2017). This activity features a faculty of eighty experts presenting over 40 hours of presentations concerning the latest advances in Body CT & MR.. Topics include Multi Energy CT, Abdominal, Bowel, Pelvis, Technical Advances, Liver, Hot Topics, Gadolinium Deposition, Kidney, Pancreas, Thoracic, Cardiac and Interventional Imaging, as well as and multiple workshops.. Available in Online Streaming and DVD-ROM formats.. After completing the SCBT-MR (Society of Computed Body Tomography and Magnetic Resonance) 40th Annual Course (2017), you will be better able to ...

You mean no more getting up and panicking? I said. Right, he answered. Enter the AVENT SCD535 DECT Baby Monitor. Immediately I wonder how I am possibly going to figure out how to use this thing. More technology is never good for a sleep-deprived mom. However, I found that there was an easy to read Quick Start Guide. There were thorough safety instructions as well and a helpful question and answer section. I didnt even need to run out and buy batteries yet; I could get those later as a backup (baby unit plugs right into the wall and only needs batteries if theres a power outage.) After charging it all up for the specified amount of time, it was show time. Baby asleep? Check. Monitor in hand? Check. With our movie going and snacks readily accessible we hunkered down for another night of quality DVD watching ...

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To Summarize: If you are people who dont want a Mobile Telephone Mast near to the outside of your house, you certainly dont want Wi-fi or a DECT phone system in your home, since these use similar technology, and you will be exposing yourself, inside your own home, to comparable emissions that are given off…. ...

SIP DECT Wireless Multi Cell System. Many organisations have already achieved improved customer satisfaction, cost savings,... Want to talk to Panasonic?.

A 36 year old housewife presented to the accident and emergency department because of increasing breathlessness, wheeze, and productive cough over the past two weeks. She had a history of asthma, which was well controlled with inhalers, but had no other history of note and was a non-smoker.. On examination, she was dyspnoeic but afebrile, with a prolonged expiratory wheeze at the left base.. Posteroanterior chest radiography was performed as part of her initial investigations (fig 1⇓). ...

Ultrasound is the initial investigation of choice especially as it avoids ionising radiation in a young patient and can be performed at the bedside. Moreover, ultrasound provides excellent soft tissue resolution and the uterine wall integrity can be visualised in most cases. It can also demonstrate the indirect signs like fluid collection and haematoma. Patient compliance might be an issue if in a lot of pain ...

A system for providing early assessment and treatment has been established in the region devised to provide focussed initial assessment and screening in addition to access to specialist physiotherapists outside of secondary care. In this document this is referenced as the MSCAT system. The pathway allows for patients to be referred direct to these areas or to have initial investigations and primary treatment outside of that system ...

Are you dedicated to improve lives, to create a confidence and to build a trust? This is a great opportunity to join our growing business! Into a heart of our Envista European businesses - Prague - we are looking for NOC Engineer!. In this role you will be managing monitoring tools, performing Level 1 network support, performing initial investigation for all network related outages, major incident management, deployment of Virtual Machines & providing weekend IT Helpdesk call center support.. Main tasks?. ...

A model, employing open-chested, anesthetized dogs, was developed to facilitate the study of myocardial drug disposition. Propranolol was employed as a model compound for initial investigation. Propranolol was administered as either a single i.v. bol

The clinical research process that takes a promising new treatment from initial investigation through US Food and Drug Administration (FDA) ...

3 Glioma Patients underwent DECT and MRS pre-Avastin and 3 months later after receiving avastin 10 mg/kg iv q2weeks. DECT: DECT at tumor progression and 3 months later. MR spectroscopy: MR spectroscopy at tumor progression and 3 months later Avastin 10 mg/kg iv q2weeks. ...

We aim to understand 3D object structure from a single image. We propose an end-to-end framework which sequentially estimates 2D keypoint heatmaps and 3D object structure, by training it on both real 2D-annotated images and synthetic 3D data and by integrating a 3D-to-2D projection layer ...

We aim to understand 3D object structure from a single image. We propose an end-to-end framework which sequentially estimates 2D keypoint heatmaps and 3D object structure, by training it on both real 2D-annotated images and synthetic 3D data and by integrating a 3D-to-2D projection layer ...

Objective: To evaluate the potential utility of dual energy CT scan (DECT) in assessing urate deposits among patients with tophaceous gout and computerized quantification of tophus volume in peripheral joints.. Methods: We included 20 consecutive patients with tophaceous gout and ten control patients with other arthritic conditions. DECT scans were performed using a renal stone color-coding protocol that specifically assessed the chemical composition of the material (i.e. urate colored in red, calcium colored in blue). Using an automated volumetric assessment of DECT, we measured the volume of urate deposits in all peripheral joint areas.. Results: All 20 patients with gout showed red color-coded urate deposits on their DECT scans, whereas none of 10 controls showed urate deposits. DECT scans revealed a total of 440 areas of urate deposition in 20 patients, whereas physical examination showed 111 areas of urate deposition (mean, 22 vs. 6 per patient, respectively, p=0.0001). Total urate volume ...

youtube]http://www.youtube.com/watch?v=mkOrnCx0yfI[/youtube] http://www.emfnews.org/headset.html. Cordless Phones Health Risks. Blue Tube Headset. Cell Tower Radiation. Specifically in relation to DECT phones the IGUMED called for a ban on DECT telephones in preschools, schools, hospitals, nursing homes, events halls, public buildings. They also called for a revision of the DECT standards to reduce the radiation intensity. (13). The German Federal Radiation Protection Agency (Bundesamt fur Strahlenschutz - BfS) has expressed concerns over DECT phone use. They stated in a January 2006 press release that a DECT cordless phone is often the strongest single source of microwave radiation in a private home. To prevent possible health risks the Agency recommended minimizing personal radiation exposure (if a DECT phone is used) by placing the base station in a place where you do not spend much time, for example a hall. For the workplace the Agency specifically advised to avoid placing DECT phones on ...

Conventional chest radiography is a relatively low-cost, widely available modality performed with low radiation dose and remains mainstay of daily practice of chest radiology. However, the low sensitivity for small pulmonary nodule limits its application in detection of early lung cancer [3, 4]. With advances in digital chest radiography, development of new techniques including algorithms typically coupled with methodological innovations that use imaging physics to improve conspicuity, and image subtraction strategies has been shown to improve image quality of digital imaging systems over conventional film techniques [18, 19]. Dual-energy subtraction radiography is considered as one of emerging technologies that can distinguish bone from soft tissue by selective decomposition and visualization of bone and soft tissue images using the information about energy-dependent changes in the attenuation of different materials [20, 21]. Multiple studies have shown that dual-energy subtraction images ...

Chest and cardiac imaging is evolving at a rapid rate. Technical advances such as iterative reconstruction radiation reduction and dual energy CT have revolutionized our approach to thoracic imaging. Lung screening has received approval from the Centers from Medicare and Medicaid with expansion in the number of programs and patients undergoing screening. There are new or updated lung nodule classification systems for both lung screening (LungRADS) and incidental lung nodules (revised Fleischner criteria). Our knowledge of lung malignancy has also progressed leading to a new description and classification of premalignant and early lung cancer lesions. The recent approval of two therapeutic drugs for idiopathic pulmonary fibrosis has led to an increased focus on interstitial lung disease for imagers, with new understandings of diffuse lung disease. There have also been remarkable advancements with respect to cross-sectional cardiac imaging both in technology and in the ability of imagers to ...

The aim of this study was to assess the potential of monoenergetic computed tomography (CT) images to reduce beam hardening artifacts in comparison to standard CT images of dental restoration on dental post-mortem CT (PMCT). Thirty human decedents (15 male, 58 ± 22 years) with dental restorations were examined using standard single-energy CT (SECT) and dual-energy CT (DECT). DECT data were used to generate monoenergetic CT images, reflecting the X-ray attenuation at energy levels of 64, 69, 88 keV, and at an individually adjusted optimal energy level called OPTkeV. Artifact reduction and image quality of SECT and monoenergetic CT were assessed objectively and subjectively by two blinded readers. Subjectively, beam artifacts decreased visibly in 28/30 cases after monoenergetic CT reconstruction. Inter- and intra-reader agreement was good (k = 0.72, and k = 0.73 respectively). Beam hardening artifacts decreased significantly with increasing monoenergies (repeated-measures ANOVA p , 0.001). ...

Ultrasonography (US) and dual-energy computed tomography (DECT) can assess urate burden in gout. The objective of this study was to compare the quantification of urate deposition provided by US to the one provided by DECT. Patients with a diagnosis of gout were prospectively recruited to undergo quantification of urate deposition using US and DECT. US examination for tophi and the double contour (DC) sign was performed on the knees and feet and corresponding DECT scans provided volumes of tophi and of overall urate deposition. The primary endpoint was the intra-class correlation coefficient (ICC) of the volume of the index tophus measured by US and DECT and its 95% confidence interval (CI 95%). Of the 64 patients included, 34 presented with at least one tophus on US. DECT inter-reader agreement for urate deposition was perfect with an ICC of 1 (1-1) and good for the measurement of the index tophus with an ICC of 0.69 (0.47-0.83). The ICC for the measurement of the index tophus between the two techniques

0004]Computerized Tomography (CT) technique has been widely applied in the fields of medical diagnosis and industrial lossless detection. Demand for the CT technique, including application of a huge number of X-ray imaging-based CT imaging systems (hereafter referred to as XCT system for short), in public security and social safeguard is also growing with the evolution of the society. The XCT systems can be categorized into mono-energy CT and dual-energy CT in terms of the utilized imaging techniques. The mono-energy and dual-energy XCTs, of which the techniques are relatively sophisticated, are mainstream XCTs in reality applications, though multi-energy X-ray imaging technique has made some progress. The mono-energy XCT can obtain information on the internal structure and physical characteristics of an object by reconstructing an attenuation coefficient image of the tomogram of the object, while it cannot distinguish and determine exactly what substance is comprised in the object. On the other ...

Materials and Methods:. Twenty-four participants recruited between May 2016 and June 2017 met GDD diagnostic criteria. The 64 control subjects provided serum samples before prophylactic flu vaccination. Serum cytokine levels were obtained with Luminex serum cytokine assay using eBiosciences/Affymetrix human 62-plex kits. Wilcoxon rank-sum tests were performed to assess the difference between the median fluorescence intensity values for the participants and the control group. Generalized linear models were built to evaluate the association between each cytokine of interest and selected participant symptoms. ...

Empathy is frequently considered an important component of human service training with some students demonstrating more empathy than others. It is proposed that skilled practitioners have demonstrated advanced empathy and included it as part of their teachings. Some authors have attempted to describe advanced empathy, but the published descriptions lack clarity. The lack of clarity surrounding the definition of empathy is problematic for research progress and for teaching advanced empathy. It is proposed that the disparity of definitions is linked to variations in authors empathy development, ranging from novice to expert. At the expert development level, a form of advanced holistic empathy is here termed halopathy . Defining the possible characteristics of halopathy is the main focus of this research. This exploratory conceptual research proposes a new model to define empathy. This model is tied to the idea that halopathy exists and that its effects can be described. The research design is

Human factors impacting on current initiatives aimed at retrofitting tractors with rollover protective structures (ROPS) were discussed. In particular, the interference of ROPS with tractor use in the absence of rollover hazards was addressed. Manually adjustable ROPS have been developed to allow tractors to pass under low obstructions. The development and use of such ROPS were described and discu

Previously developed threshold-based techniques [2] were insufficient to isolate guidewire signal due to the reduced susceptibility of paramagnetic guidewires at 0.55T. A mixture-of-Gaussians based clustering and region-growing segmentation was implemented using MATLAB2019a to identify the guidewire (Figure 1). The algorithm used four image inputs: the anatomical image, the positive contrast image, a subtraction image from baseline, and a frame-by-frame temporal subtraction image. One mask was generated from the two subtraction images to identify guidewire motion. A second mask from the positive contrast images was used to isolate signal from guidewire shaft. The masks were used as seed points for region-growing, and a connected-component analysis was used to select the guidewire pixels ...

Results from the DECT trial indicate that a combination of epirubicin and trastuzumab improved outcomes in patients with HER2-positive breast cancer.

Find the telephone numbers and names of the entire organization easily with the central directory always at hand. And whats more, you know when they are available to take a call. Simply browse to the right person in your DECT handset and check the persons presence status. So much for convenience and efficiency!. ...

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Dual-energy computed tomography showed good diagnostic accuracy in established gout but had low diagnostic sensitivity in patients with recent-onset gout.

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DSA and arteriography are gold standard investigations. However, ultrasound Doppler or CT angiography (CTA) or MRA should be advised as initial investigations for diagnosis. In cases of thrombosed aneurysm ultrasound is less specific. Plain CT brain examination can be reported normal as in this case. MRI brain examination with MRA is more useful in cases of delayed presenting aneurysms as intraparenchymal abnormalities, can also be better assessed and with postprocessing such as MIP reconstructions, information such as feeding branch vessel, status of thrombosis, size of aneurysm and other relevant information for surgery can be given ...

The Economic and Organised Crime Office (EOCO) on Wednesday, 27 May 2020, arrested some officials of Payboy Company Limited, an entity that purports to be into the marketing and promotion of financial technologies.. EOCO said its initial investigations have revealed that the company was operating without the requisite licences from either the Bank of Ghana or the Securities and Exchange Commission.. The public has been advised to be circumspect when dealing with companies or individuals if it involves financial commitment.. Now defunct gold dealership firm, Menzgold Ghana Limited, two-weeks ago appointed Payboy Company Limited as a third party to negotiate debt settlement with its numerous aggrieved clients.. In a statement, Menzgold said: Following a piece of advice given and subsequently reiterated in a press release issued on the 18th of December 2019 with reference number KBA 3015/19 by our counsel, were happy to introduce PAYBOY COMPANY LIMITED, a digital payments marketing and promotions ...

The threshold for initiating investigations is when there is no evidence of pubertal changes in a girl aged 13 or a boy aged 14. The first step is to take a detailed history of their general health, development, family history, diet and lifestyle. An examination to assess height, weight, stage of pubertal development and features of underlying conditions. Investigation can also be considered when there is some evidence of puberty but no progression over 2 years.. Initial investigations can be used to look for underlying medical conditions:. ...

The president of OhioHealth Grant Medical Center said hospital officials deeply regret what happened when three security officers detained a man Monday night by using pepper-spray, a baton, and forced him to the ground outside a hospital entrance. While our initial investigation shows that our protective service officers did follow recognized protocols, we believe there was an opportunity for our team to look beyond their official training and exercise more compassion, coupled

I tested a 4 year old whose mother had a lazy eye and was worried about her son developing a similar problem because of how it had affected her. Initial investigation showed a moderately high hypermetropic prescription which put the child at risk of developing a lazy eye or a turn, this meant we had to put drops in. I went from being quite nice to being horrible in one fell swoop as far as the child was concerned. After the drops had taken effect a bit more plus came out for overall refractive error of about +9.00 with -2.00 cyls. However after he had had time to adapt to wearing the trial frame he grew to appreciate the clarity he was seeing with compared to the without, so by the time he had chosen his glasses he was happy and I got a high five on the way out! I didnt get a chance to do the collection sadly but I can only hope it was similar to the viral video of Piper, the 10 month old ...

This is why its important to prepare for the possibility of an accident and the realities of the initial investigation by developing an accident investigation kit.. ...

Clinton has apologized for her use of the private email server, saying it was a mistake.. Even before the FBI concluded its investigation of her use of the server and recommended no charges be filed, many prominent Republicans called for Attorney General Loretta Lynch to appoint a special counsel to take over the matter, citing potential conflicts of interest for the Justice Department.. Mukasey said a special prosecutor would likely be necessary if federal authorities in the next administration decide to re-examine Clintons handling of classified information on her private server.. Because officials in the Justice Department and FBI participated in the initial investigation and in the decision not to bring charges, if the case is reopened, a special counsel would be warranted, he said.. Trump said at the debate last night, Were going to get a special prosecutor, and were going to look into the Clinton email matter, he said.. But if a President Trump wanted a special prosecutor, he would ...

Pfizer said in a statement on Monday that it had commenced advising pharmacies, hospitals, consumers and clinicians about the need to inspect product on hand.. There is no greater priority to Pfizer than patient safety and maintaining the integrity of our supply chain is paramount to this, it said.. We have launched a comprehensive review of our manufacturing, packaging and distribution processes for both Lignocaine and Heparin.. From this we have ascertained this is likely an isolated incident with one pharmacy after the pack has left Pfizers distribution chain, however, we are working closely with wholesalers, distributors and NSW Health to be absolutely certain this is the case.. Whilst initial investigations have ascertained this is likely an isolated incident with one pharmacy, we are undertaking this voluntary action as a precautionary measure.. The probability of finding affected stock from impacted batches is considered low.. Pfizer is taking this issue very seriously and is ...

COLUMBIA, La. (BRPROUD) - 30-year-old Kenterious Higgins of Denham Springs was killed early Monday morning in Caldwell Parish. The deadly crash took place on LA Hwy 849 around 1:30 a.m. According to the Louisiana State Police, The initial investigation revealed a 2002 GMC Yukon XL, driven by Higgins, was traveling southbound on LA Hwy 849 […]

What was the time of death? This is often asked by family members of the deceased after a death investigator completes the initial investigation....

AuntMinnie.com is the largest and most comprehensive community Web site for medical imaging professionals worldwide. Radiologists, technologists, administrators, and industry professionals can find information and conduct e-commerce in MRI, mammography, ultrasound, x-ray, CT, nuclear medicine, PACS, and other imaging disciplines.

The slim and beautiful Panasonic KX-TGC210 cordless phone features a Greek menu, a 1.6-inch LCD screen with easy-to-read illumination, and ECO mode, reducing the devices radiant volume up to 98% at the touch of a button.. ...

Handheld colour monitor and long-range compact camera system with night vision, long-battery life and smart sensors. A baby monitor can give you the peace

Effectively interpret a full range of findings with the aid of more than 4,000 outstanding illustrations that encompass conventional radiography, ultrasound, CT, dual-energy CT, PET-CT, and all other diagnostic imaging modalities used to evaluate musculoskeletal disorders, including numerous examples of 3-D imaging ...

UMTS GSM DECT C2000 WiFi WLAN - Hoogfrequente elektromagnetische straling kan de gezondheid schaden (zie onderbouwing en vele ervaringsverhalen op de website). Het is tijd voor nieuwe blootstellingslimieten en veilige alternatieven voor mobiele communicatie.

UMTS GSM DECT C2000 WiFi WLAN - Hoogfrequente elektromagnetische straling kan de gezondheid schaden (zie onderbouwing en vele ervaringsverhalen op de website). Het is tijd voor nieuwe blootstellingslimieten en veilige alternatieven voor mobiele communicatie.

Diagnosing gout, a nasty disease involving swollen joints and often a good deal of pain, is difficult because the symptoms are often similar to various