TY - CONF. T1 - Evaluating plant growth by electrical impedance tomography analysis. AU - Kobata, Kenji. AU - Honda, Satoshi. PY - 2013/1/1. Y1 - 2013/1/1. N2 - This paper shows how to evaluate plant growth by using electrical impedance tomography. Generally electrical impedance tomography (EIT) is used for human body and materials. By using the advantage that plants can be applied electricity inside, we can expect that more information is acquired. First, the problem is solved with a simple model analytically. Secondly, the problem with more precise model is solved numerically. In the previous work we showed how the electrical potential is distributed enough for using EIT.[7] This paper shows that how the inverse problem is solved and the advantage works.. AB - This paper shows how to evaluate plant growth by using electrical impedance tomography. Generally electrical impedance tomography (EIT) is used for human body and materials. By using the advantage that plants can be applied electricity ...
The International Steering Committee of Electrical Impedance Tomography is pleased to announce that the 12th International Conference in Electrical Impedance Tomography (EIT 2011) will take place at the Department of electronic & Electrical Engineering, University of Bath, on 4-6 May 2011. The conference venue is the University of Bath, which is 15 minutes bus journey from the world heritage city of Bath. To find and book your accomodation please visit City of Bath accomodation Website. As usual, the conference will focus on medical applications of Electrical Impedance Tomography, Magnetic Induction Tomography, and Magnetic Resonance Electrical Impedance Tomography. ...
1] Scott-Conner CE, Dawson DL. Operative Anatomy, 3rd ed. Lippincott & Wilkins, Philadelphia; 2009.. [2] Teschner E, Imhoff M. Electrical impedance tomography: The realiza- tion of regional lung monitoring. Dräger Medical GmbH EIT Booklet, Germany, 2011.. [3] Karsten J, Steuber T, Voigt N, Teschner E, Heinze H. Influence of dif- ferent electrode belt positions on electrical impedance tomography imaging of regional ventilation: a prospective observational study. Crit Care 2016;20:3.. [4] Bikker IG, Preis C, Egal M, Bakker J, Gommers D. Electrical impedance tomography measured at two thoracic levels can visualize the ven- tilation distribution changes at the bedside during a decremental positive end-expiratory lung pressure trial. Crit Care 2011;15:R193.. [5] Newell JC, Isaacson D, Cheney M, Saulnier GJ, Gisser DG, Boble JC, Cook RD, Edic PM, Newton CA. In Vivo impedance images using si- nusoidal current patterns. University College London, 1993, Clinical and Physiological Applications of ...
TY - JOUR. T1 - Validation study of stroke volume measurement by means of Electrical Impedance Tomography. AU - Janse, A.. AU - Noordegraaf, A. Vonk. AU - Marcus, J. T.. AU - Heethaar, R. M.. AU - Postmus, P. E.. AU - Faes, T. J.C.. AU - de Vries, P. M.J.M.. PY - 1996/12/1. Y1 - 1996/12/1. N2 - ECG-gated Electrical Impedance Tomography (EIT) has been developed to monitor blood volume changes. The aim of this study was to compare stroke volume measurements by EIT with established methods of thermodilution and Magnetic Resonance Imaging (MRI). After right cardiac catheterization, EIT measurements were performed in 26 patients. Regression analysis was used to analyze the relation between the EIT results and stroke volume. From the regression line an equation was derived to estimate stroke volume (in ml) by EIT. In a group of eleven healthy subjects this equation was validated to MRI. A strong correlation was found between EIT and stroke volume measured by the thermodilution method (r = 0.86). The ...
Automatic detection of detached and erroneous electrodes in Electrical Impedance Tomography.POMPES PAR TRANSITIONS MULTIPLES , Automatic detection of detached and erroneous electrodes in Electrical Impedance Tomography.POMPES P... , کتابخانه دیجیتال دانشگاه آزاد اسلامی خوراسگان
The low-frequency complex electrical conductivity in the mHz to kHz range has been shown to enable an improved textural, hydraulic, and biogeochemical characterization of the subsurface using electrical impedance spectroscopy (EIS) methods. Principally, these results can be transferred to the field using electrical impedance tomography (EIT). However, the required accuracy of 1 mrad in the phase measurements is difficult to achieve for a broad frequency bandwidth because of electromagnetic (EM) coupling effects at high frequencies and the lack of inversion schemes that consider the spectral nature of the complex electrical conductivity. Here, we overcome these deficiencies by (i) extending the standard spatial-smoothness constraint in EIT to the frequency dimension, thus enforcing smooth spectral signatures, and (ii) implementing an advanced EM coupling removal procedure using a newly formulated forward electrical model and calibration measurements. Both methodological advances are independently
Laboratory measurements of the complex electrical conductivity in a broad frequency range (i.e. mHz to kHz) using spectral induced polarization (SIP) measurements have shown great promise to characterize important hydrological properties (e.g. hydraulic conductivity) and biogeochemical processes. However, translating these findings to field applications remains challenging, and significant improvements in spectral electrical impedance tomography (EIT) are still required to obtain images of the complex electrical conductivity with sufficient accuracy in the field. The aim of this study is to present recent improvements in the inversion and processing of broadband field EIT measurements, and to evaluate the accuracy and spectral consistency of the obtained images of the real and imaginary part of the electrical conductivity. In a first case study, time-lapse surface EIT measurements were performed during an infiltration experiment to investigate the spectral complex electrical conductivity as a function
The FluxMed monitors also have the possibility of incorporating an Electrical Impedance Tomography (EIT) module. The measurement of EIT, using the application of small alternating currents, determine the impedance changes related to ventilation in the thoracic section.. Main Features:. ...
In this paper, we study a fast approximate inference method based on expectation propagation for exploring the posterior probability distribution arising from the Bayesian formulation of nonlinear inverse problems. It is capable of efficiently delivering reliable estimates of the posterior mean and covariance, thereby providing an inverse solution together with quantified uncertainties. Some theoretical properties of the iterative algorithm are discussed, and the efficient implementation for an important class of problems of projection type is described. The method is illustrated with one typical nonlinear inverse problem, electrical impedance tomography with complete electrode model, under sparsity constraints. Numerical results for real experimental data are presented, and compared with that by Markov chain Monte Carlo. The results indicate that the method is accurate and computationally very efficient. ...
A highly versatile Electrical Impedance Tomography (EIT) system, nicknamed the ScouseTom, has been developed. The system allows control over current amplitude, frequency, number of electrodes, injection protocol and data processing. Current is injected using a Keithley 6221 current source, and voltages are recorded with a 24-bit EEG system with minimum bandwidth of 3.2 kHz. Custom PCBs interface with a PC to control the measurement process, electrode addressing and triggering of external stimuli. The performance of the system was characterised using resistor phantoms to represent human scalp recordings, with an SNR of 77.5 dB, stable across a four hour recording and 20 Hz to 20 kHz. In studies of both haeomorrhage using scalp electrodes, and evoked activity using epicortical electrode mats in rats, it was possible to reconstruct images matching established literature at known areas of onset. Data collected using scalp electrode in humans matched known tissue impedance spectra and was stable over
Public examination of a doctoral dissertation in the field of physics. Doctoral candidate: M.Sc. Antti Nissinen Date and venue: 3.6.2011 at 12 noon, L22, Snellmania, Kuopio campus. ABSTRACT In electrical impedance tomography (EIT), electrodes are attached on the boundary of the object and currents are injected into the object. The voltages are measured using the same electrodes and the conductivity of the object is reconstructed based on the measured voltages. The reconstruction problem is a non-linear ill-posed inverse problem, i.e. the problem is highly sensitive to measurement and approximation errors. The effect of the measurement errors can be reduced by using an accurate measurement system and by accurate modeling of the statistics of the error. Approximation errors are due to an approximative computational model used in the inverse computations. In practical applications, an adequately accurate mathematical model cannot often be used due to limited computational resources, and therefore a ...
We study flexible and proper smoothness priors for Bayesian statistical inverse problems by using Whittle-Matérn Gaussian random fields. We review earlier results on finite-difference approximations of certain Whittle-Matérn random field in $\mathbb{R}^2$. Then we derive finite-element method approximations and show that the discrete approximations can be expressed as solutions of sparse stochastic matrix equations. Such equations are known to be computationally efficient and useful in inverse problems with a large number of unknowns. |br|    The presented construction of Whittle-Matérn correlation functions allows both isotropic or anisotropic priors with adjustable parameters in correlation length and variance. These parameters can be used, for example, to model spatially varying structural information of unknowns. |br|    As numerical examples, we apply the developed priors to two-dimensional electrical impedance tomography
In this work we study localized electric potentials that have an arbitrarily high energy on some given subset of a domain and low energy on another. We show that such potentials exist for general $L^\infty_+$-conductivities in almost arbitrarily shaped subregions of a domain, as long as these regions are connected to the boundary and a unique continuation principle is satisfied. From this we deduce a simple, but new, theoretical identifiability result for the famous Calderón problem with partial data. We also show how to construct such potentials numerically and use a connection with the factorization method to derive a new non-iterative algorithm for the detection of inclusions in electrical impedance tomography.
Abstract: : Purpose: The Heidelberg Retina Tomograph (HRT 2)(version 2.01) is an easily handled machine for routine optic disc examination in glaucoma clinics. We investigated the possibility of using the HRT 2 as an adjuvant machine to check the progress of glaucoma during the follow-up period. Although the HRT 2 is an easily handled model, the data may differ according to measuring situation. Therefore, we evaluated the reproducibility of the HRT 2. Method: We performed two trials focusing on the reference height (The reference height is located 50µm posterior to the mean height of -4°∼-10°contour line of the disc. It is assumed that this height does not change until the late stage of glaucoma.). The optic disc images of 22 eyes of 11 normal volunteers were taken using the HRT 2 by the same examiner. In the first trial, the optic disc images were taken twice without checking fluctuation of the reference height. In the second trial, careful attention was paid for the reference height. If ...
An automated test system and procedure is proposed, designed to enable systematic testing of electrical impedance tomography (EIT) devices. The system is designed to calculate reliable, repeatable and accurate performance figures of merit of an EIT system using a saline phantom and an industrial robot arm. Applications of the test system are to compare EIT devices against requirements, or to help optimize a device for its operating parameters. A test methodology and sample test results are presented to illustrate its use. The system is used to compare image quality and contrast detection for a range of stimulation and measurement patterns, and results show the best images when the pair of current injection electrodes is spaced between 45 and 170 degrees on a tank. Finally, we propose a classification of the object detection errors, which can facilitate comparison of EIT instrument specifications.. ...
Breast cancer screening is an evolving area as there is still need of finding the ideal screening modality that fit the community demand of mass screening. The aims are to evaluate the validation and feasibility of EIT against gold standard mammography and to determine women pain perception towards both imaging methods. Women underwent screening mammography were selected for EIT imaging. The pain score were taken after each imaging session. Two independent raters were chosen to interpret image findings of EIT. 164 women were successfully selected for the study. 48.17 of subjects were classified as normal (group 1) with no significant findings (BIRADS 1); and 51.83 of subjects were classified as abnormal (group 2) with significant findings of either benign or suspicious of malignancy (BIRADS2). EIT sensitivity and specificity against screening mammography for rater 1 were 69.41 and 63.29, whereas for rater 2 were 55.29 and 56.96 respectively. The reliability for each rater were found to range ...
As previously mentioned, electrical conductivity and permittivity vary among biological tissue types and depend on their free ion content.[2][3][8] Further factors affecting conductivity include temperature and other physiological factors, e.g. the respiratory cycle between in- and expiration when lung tissue becomes more conductive due to lower content of insulating air within its alveoli. After positioning surface electrodes through adhesive electrodes, an electrode belt or a conductive electrode vest around the body part of interest, alternating currents of typically a few milliamperes at a frequency of 10-100 kHz will be applied across two or more drive electrodes. The remaining electrodes will be used to measure the resulting voltage. The procedure will then be repeated for numerous "stimulation patterns", e.g. successive pairs of adjacent electrodes until an entire circle has been completed and image reconstruction can be carried out and displayed by a digital workstation that incorporates ...
2012 (English)In: Journal of applied physiology, ISSN 8750-7587, E-ISSN 1522-1601, Vol. 112, no 12, 2128-2128 p.Article in journal, Letter (Refereed) Published ...
83 [35] K. Banach, M. D. Halbach, P. Hu, J. Hescheler, and U. Egert, "Development of electrical activity in cardiac myocyte aggregates de rived from mouse embryonic stem cells," Am J Physiol Heart Circ Physiol vol. 284, pp. H2114-23, 2003. [36] J. Hescheler, Y. Duan, M. Tang, and H. Linag, "Investigation on spontaneous electrical activity of murine embryonic heart using microelectrode arrays," Acta Physiologica Sinica vol. 58, pp. 65-70, 2006. [37] J. Malmivuo and R. Plonsey, Bioelectromagnetism Principles and Applications of Bioelectric and Biomagnetic Fields New York, NY: Oxford University Press, 1995. [38] A. Adler, R. Amyot, R. Guardo, J. H. T. Bates, and Y. Berthiaume, "Monitoring changes in lung air and liquid volumes with electrical impedance tomography," J Appl Physiol vol. 83, pp. 1762-1767, 1997. [39] I. Frerichs, J. Hinz, P. Herrmann, G. Wei sser, G. Hahn, T. Dudykevych, M. Quintel, and G. Hellige, "Detection of local lung air content by electrical impedance tomography compared with ...
Abstract: In Electrical Impedance Tomography (EIT) one wants to image the conductivity distribution of a body from current and voltage measurements carried out on its boundary. In this paper we consider the underlying mathematical model, the inverse conductivity problem, in two dimensions and under the realistic assumption that only a part of the boundary is accessible to measurements. In this framework our data are modeled as a partial Neumann-to-Dirichlet map (ND map). We compare this data to the full-boundary ND map and prove that the error depends linearly on the size of the missing part of the boundary. The same linear dependence is further proved for the difference of the reconstructed conductivities -- from partial and full boundary data. The reconstruction is based on a truncated and linearized D-bar method. Auxiliary results include an extrapolation method to obtain the full-boundary data from the measured one, an approximation of the complex geometrical optics solutions computed ...
In acousto-electric tomography (AET), the electrical conductivity distribution in a domain of interest (DOI) is constructed from power density data measured under the disturbance of focused ultrasonic wave. However, the power density cannot be measured directly. One needs to reconstruct it from the potential on the full boundary of DOI, which is not practical to measure. A new reconstruction strategy is proposed herein. The boundary potential is firstly reconstructed with electrical impedance tomography algorithm based on a complete electrode model (CEM). The power density is then reconstructed from the boundary potential for reconstructing the power density with an iterative algorithm based on continuum model.
Maxwells equations dictate the relationship between the electrical conductivity and permittivity of a body and the curvature of electromagnetic fields applied to that body. Our Local Maxwell Tomography technique uses MR-based measurements of local field curvature to derive unknown electrical property distributions, effectively inverting Maxwells equations. This has been attempted in the past using surface-measurement-based approaches such as Electrical Impedance Tomography (EIT), but all such surface-based techniques are fundamentally ill-posed and none have proven to be practical for routine use. MR provides cross-sectional information about selected magnetic field distributions, and this has recently been leveraged in the low-frequency MREIT technique (which solves for conductivity based on the fields produced by applied currents) or the Larmor-frequency Electrical Properties Tomography (EPT) technique (which uses field curvature to estimate RF conductivity and permittivity). However, ...
Article A Forward Solution for RF Impedance Tomography in Wood in Sensors & Transducers journal, Special Issue on Modern Sensing Technologies, April 2008, pp.294-301
top EM3D Version 1.2. New Features: In order to facilitate segmentation with high zoom, it is now possible to change the segmentation markers color, shape, and size.. Changes: The new thickness calculation generates a more accurate thickness result. We simplified the user interface for reconstruction. Bug Fixes: A bug caused some segmentations to disappear after multiple rotations or saves. This has been fixed. When manual objects were rotated or restored, they often lost part of their segmented area(red) while keeping their outline(blue or green). When the volume was rotated, the cross hairs in the transverse views were incorrect. This has been fixed. Some large temporary files were not being deleted on exit. They are now all deleted when the program exits normally. For some datasets, TIFF images were being written with their original z-position as the index instead of their slice number. Now the index for the TIFF image matches the slice position in EM3D. MRC stacks would read in flipped ...
Synthetic-aperture ultrasound tomography systems and methods using scanning arrays and algorithms configured to simultaneously acquire ultrasound transmission and reflection data, and process the data for improved ultrasound tomography imaging, wherein the tomography imaging comprises total-variation regularization, or a modified total variation regularization.
Comparison of Ethnic-specific Databases in Heidelberg Retina Tomography-3 to Discriminate Between Early Glaucoma and Normal Chinese Eyes
A novel computational, non-iterative and noise-robust reconstruction method is introduced for the planar anisotropic inverse conductivity problem. The method is based on bypassing the unstable step of the reconstruction of the values of the isothermal coordinates on the boundary of the domain. Non-uniqueness of the inverse problem is dealt with by recovering the unique isotropic conductivity that can be achieved as a deformation of the measured anisotropic conductivity by isothermal coordinates. The method shows how isotropic D-bar reconstruction methods have produced reasonable and informative reconstructions even when used on EIT data known to come from anisotropic media, and when the boundary shape is not known precisely. Furthermore, the results pave the way for regularized anisotropic EIT. Key aspects of the approach involve D-bar methods and inverse scattering theory, complex geometrical optics solutions and quasi-conformal mapping techniques.
In Ultrasound Tomography (UST) transducers around the boundary of a medium measure the scattered acoustic waves arising from transmitted pulses emitted from the transducers. In medical applications, the possibilities for transducer placement are constrained by the geometry of the human body. In this talk, optimal transducer placement and excitation patterns will be discussed for several geometries, and their effects on image quality and computation time will be compared for simulated medical imaging data ...
Assuming that the observations are from normal distribution we obtain de distribution of the maximum likelihood ratio test if there is a change in the parameters at an unknown time and we find the maximum likehood estimators of the time change too.. ...
seminar of Heidelberg University Hospital and German Center for Cardiovascular Disease (DZHK); host: Prof. Dr. M. Hecker, Inst. of Physiology and Pathophysiology, Heidelberg University) ...
seminar of Heidelberg University Hospital and German Center for Cardiovascular Disease (DZHK); host: Prof. Dr. M. Hecker, Inst. of Physiology and Pathophysiology, Heidelberg University) ...
This will give you a dark current subtracted, flat fielded, degridded, exposure time normalized, a first order response normalized image.. The next series of steps is complicated because of the various assumptions discussed in the previous section. Interpretation of this is not straightforward and it is recommended that the user consult with an EIT team member! In order to obtain bandpass information use the routine EIT_PARMS. Please read the header information for all keywords. ...
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日本語 back Roland Eils教授が監督するハイデルベルクチームでは、学部学生が病原体や癌細胞すらも検知して殺す微生物機械を開発しています。合成生物学の国際コンペティションであるiGEMで、世界中から参加する84チームと競い合います。 iGEM (international Genetically Engineered Machines ...
Zur Diagnostik vererbter Stoffwechselstörungen werden spezielle diagnostische Verfahren im Dietmar-Hopp-Stoffwechselzentrum in zwei Laboratorien zusammengefasst:. ...
10:26, 27 October 2010 (diff , hist) Team:Heidelberg/Modeling/descriptions ‎ (→miBEAT: miRNA BindingSite Engineering and Assembly Tool) ...
Ein Zentrum des tibetischen Buddhismus in Heidelberg. Zentrum der Karma Kagyü Gemeinschaft Friedenstraße Karmapa Urgyen Thinley Dorje
Informējam, ka šajā tīmekļa vietnē tiek izmantotas sīkdatnes (angļu val. "cookies"). Plašāku informāciju par sīkdatnēm varat atrast šeit.. Apmeklējot šo lapu, jūs piekrītat mūsu sīkdatņu izmantošanas politikai ...
Fluorescence molecular tomography is an imaging modality which exploits the specificity of fluorescent biomarkers to generate volumetric images using near-infrared light, which is safe and non-ionizing, at a substantially lower cost than competing modalities like positron emission tomography (PET) or single photon emission computed tomography (SPECT). While these very attractive features make it well-suited for preclinical research, the 3D reconstruction of fluorescent sources is confounded by the high degree of absorption and scattering of photons propagating through tissue, which make the inverse problem ill-posed. The focus of my Ph.D. research has been the development of computational techniques to tackle this challenge in order to reconstruct high resolution 3D images of molecular targets in vivo in small animals. To accurately and efficiently predict the photon fluence on the animal surface, we have developed a fast approach based on the Born approximation for computing the photon ...
As an optical molecular imaging modality, fluorescence molecular tomography (FMT) can monitor the activities of organisms in vivo at the molecular and cellular levels. However, the recovered image...
Respiratory Sinus Arrhythmia, the variation in the heart rate synchronized with the breathing cycle, forms an interconnection between cardiac-related and respiratory-related signals. It can be used by itself for diagnostic purposes, or by exploiting the redundancies it creates, for example by extracting respiratory rate from an electrocardiogram (ECG). To perform quantitative analysis and patient specific modeling, however, simultaneous information about ventilation as well as cardiac activity needs to be recorded and analyzed. The recent advent of medically approved Electrical Impedance Tomography (EIT) devices capable of recording up to 50 frames per second facilitates the application of this technology. This paper presents the automated selection of a cardiac-related signal from EIT data and quantitative analysis of this signal. It is demonstrated that beat-to-beat intervals can be extracted with a median absolute error below 20 ms. A comparison between ECG and EIT data shows a variation in ...
In fluorescence molecular tomography (FMT), diffuse-light measurements are obtained from a series of source-detector pairs placed on the boundary of the medium. The sensitivity of measurements deteriorates quickly with increased distance from the sources and detectors and therefore yields poor depth quantitative recovery. A depth compensation algorithm is presented in this paper to reconstruct fluorescent inclusions in deep tissues. Two weight matrixes are employed to level off sensitivity differences and enhance prominent elements of the solution. Results of numerical and phantom experiments demonstrate that both relative quantitation and spatial resolution of FMT are improved for inclusions at different depths.. © 2012 Optical Society of America. Full Article , PDF Article ...
Magnetic resonance electrical impedance tomography (MREIT) is a technique that produces images of conductivity in tissues and phantoms. In this technique, electrical currents are applied to an object and the resulting magnetic flux density is measured using magnetic resonance imaging (MRI) and the conductivity distribution is reconstructed using these MRI data. Currently, the technique is used in research environments, primarily studying phantoms and animals. In order to translate MREIT to clinical applications, strict safety standards need to be established, especially for safe current limits. However, there are currently no standards for safe current limits specific to MREIT. Until such standards are established, human MREIT applications need to conform to existing electrical safety standards in medical instrumentation, such as IEC601. This protocol limits patient auxiliary currents to 100 µA for low frequencies. However, published MREIT studies have utilized currents 10-400 times larger than ...
Optoacoustic tomography can visualize optical contrast in tissues while capitalizing on the advantages of ultrasound, such as high spatial resolution and fast imaging capabilities. We report a novel multispectral optoacoustic tomography system for deep tissue small animal imaging. The previously undocumented capacity of whole-body optoacoustic tomography at a video rate has been demonstrated by visualizing mouse kidney perfusion using Indocyanine Green in vivo.. © 2010 Optical Society of America. Full Article , PDF Article ...
In 20 mechanically ventilated patients who routinely undergo bronchoscopy Electrical Impedance Tomography (EIT) measurements whereby, evaluable data of 10 patients are needed, of about 1-2 minutes are performed directly before, directly after and 10, 30, and 60 minutes after bronchoscopy parallel to the following routine measurements: tidal volume, resistance, compliance, heart rate, blood pressure, SpO2 and blood gas values. Prior to the examination a rubber belt with 16 integrated electrocardiographic electrodes is placed around the thorax connected with an EIT- device. EIT data are generated by application of a small alternating current of 5mA and 50kHz and are stored and analyzed offline on a personal computer. The EIT provides a mapping of the distribution of the lung´s electrical impedance and exhibits a far temporal resolution of up to 40 tomograms per second. Because of electrical impedance of the pulmonal tissue is dependant to the air content, the air distribution within the lung over ...
To improve clinical breast imaging, a new ultrasound tomography imaging device (CURE) has been built at the Karmanos Cancer Institute. The ring array of the CURE device records ultrasound transmitted and reflected ultrasound signals simultaneously. We develop a bent-ray tomography algorithm for reconstructing the sound-speed distribution of the breast using time-of-flights of transmitted signals. We study the capability of the algorithm using a breast phantom dataset and over 190 patients data. Examples are presented to demonstrate the sound-speed reconstructions for different breast types from fatty to dense on the BI-RADS categories 1-4. Our reconstructions show that the mean sound-speed value increases from fatty to dense breasts: 1440.8 m/ s (fatty), 1451.9 m/ s (scattered), 1473.2 m/ s(heterogeneous), and 1505.25 m/ s (dense). This is an important clinical implication of our reconstruction. The mean sound speed can be used for breast density analysis. In addition, the sound-speed ...
Part I Computed Tomography System Industry Overview. Chapter One Computed Tomography System Industry Overview. 1.1 Computed Tomography System Definition. 1.2 Computed Tomography System Classification Analysis. 1.2.1 Computed Tomography System Main Classification Analysis. 1.2.2 Computed Tomography System Main Classification Share Analysis. 1.3 Computed Tomography System Application Analysis. 1.3.1 Computed Tomography System Main Application Analysis. 1.3.2 Computed Tomography System Main Application Share Analysis. 1.4 Computed Tomography System Industry Chain Structure Analysis. 1.5 Computed Tomography System Industry Development Overview. 1.5.1 Computed Tomography System Product History Development Overview. 1.5.1 Computed Tomography System Product Market Development Overview. 1.6 Computed Tomography System Global Market Comparison Analysis. 1.6.1 Computed Tomography System Global Import Market Analysis. 1.6.2 Computed Tomography System Global Export Market Analysis. 1.6.3 Computed Tomography ...
RFS5005A is a development platform for Electrical Impedance Tomography systems. It allows to use single RCL bridge or Impedance analyzer and switch its terminals between up to 16 electrodes. The design ensures low crosstalk and fast switching times. The RFS5005A contains: RFS5003B T-switch multiplexer board, linear- regulated power supply (+5V; -5V; +15V; -15V) and a universal metal rack 19
Linköping University, Department of Clinical and Experimental Medicine, Burn Center. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Sinnescentrum, Department of Plastic Surgery, Hand surgery UHL. Östergötlands Läns Landsting, Sinnescentrum, Department of Anaesthesiology and Surgery UHL. ...
Driving Pressure Greater than 14 cmH2O is Associated with Increased Mortality When Tidal Volume is Less than 8 ml/kg in Sepsis Patients with Acute Respiratory Failure Yen-Tseng Lin, Ming-Cheng Chan, Jeng-Sen Tseng, Sou-Jen Shih, Chi-Yuan Yi, Hsiu-Hui Yu, Chieh-Liang Wu,Yen-Hsiang Huang Coinfection of Pneumocystis jiroveci and Mycobacterium tuberculosis in a Patient without Human Immunodeficiency Virus Infection: A Case Report Yun-Kai Yeh, Fang-Chi Lin Electrical Impedance Tomography for Optimal Positive End-Expiratory Pressure Application in Unilateral Acute Lung Injury with Profound Hypoxemia: A Case Report Chan-Chun Chang, Chien-Hung Gow, Yeong-Long Hsu Mycoplasma Pneumonia Complicated with Cold Agglutinin Hemolysis, Ischemic Stroke, and Acute Kidney Injury in a Middle-Aged Woman with Type II Diabetes: A Case Report and Literature Review Chia-Jung Chan, Ching-Lung Liu Legionnaires Disease and Rhabdomyolysis: A Case Report and Literature Review Yen-Chang Chen, Chiao-Hung Wang, Kuan-Jung Chen, Ruery