... However, both signals are contaminated by cardiac activity reflected in electrocardiographic and cardiac pulse signals, respectively. ...

Using compartmental analysis methods, a mathematical basis is given for the measurement of absolute and fractional cardiac output with diffusible tracers. Cardiac output is shown to be the product of the blood volume and the sum of the rate constants of tracer egress from blood, modified by a factor reflecting transcapillary ...

We describe a case of delayed presentation of attempted suicide with a nail gun that penetrated both the right and left ventricle. Nearly invisible entry point of the nail did not reflect the gravity of the injury. A prompt and accurate history along with chest X-ray and bedside transthoracic echocardiography facilitated localization of the nails and ...

Following advances in overall management and improved outcomes, an increasing number of adolescents with cardiac disease are reaching adult age. Patients in general, including adolescents, seem to have a poor knowledge of their illness, which may further reflect in a less optimal quality of life. As a guide to their knowledge of their ...

... REFLECTOMETER IN THE OVERLAPPING SPECTRAL RANGE BETWEEN ... THE UNCERTAINTY OF THE REFLECTANCE MEASURED BY IT IS ...

A simple and accurate method for calculating cardiac output with indicator dilution techniques is described. The output of a densitometer is fed into an electronic integrator, and the outputs of the densitometer and integrator are recorded simultaneously ...

Duplex Doppler sonography is a fundamental component of the complete ultrasonographic examination of the liver. Accurate interpretation of the spectral Doppler tracing from the hepatic veins is valuable, as it reflects important cardiac and hepatic physiology. Normally, there are four phases: A, S, V, and D; the S and D waves indicate ...

... across species. It is most highly expressed in cardiac and skeletal muscle and brain. The primary amino ... 1999) may reflect the �wear and tear� on cardiac tissue that is constant and for which protein ...

... Linear estimation is a viable method for analyzing mixed pixels under the simplified assumption of accurate reflectance calibration, accurate ...

Accurate reflectance spectra should be a measure of reflectance as a function of wavelength only. Other compact multispectral microimagers use separate LEDs ...

A total of 360 patients underwent preoperative cardiac risk assessment using 23 clinical parameters, seven multivariate clinical scoring systems, and quantitative dipyridamole-thallium imaging to predict postoperative and long-term myocardial infarction and cardiac death after noncardiac surgery. There were 30 postoperative and an additional 13 cumulative ...

The study objective was to determine whether the 'cardiac decompensation score' could identify cardiac decompensation in a patient with existing cardiac compromise managed with intraaortic balloon counterpulsation (IABP). A one-group, posttest-only design was utilised to collect observations in 2003 from IABP recipients treated in the ...

Accurate assessment of the cardiac system in pediatric and adolescent youth is important. The hemodynamic demands associated with exercise, training, and sport participation are usually positive and beneficial; however, when an underlying cardiac problem exists, it is imperative that such cardiac problems be ...

Accurate measurements of snow areas and surface albedo are crucial to advancing our understanding of

Electrophysiological catheters are used for both diagnostics and clinical intervention. To facilitate more accurate and precise catheter navigation, robotic cardiac catheter navigation systems have been developed and commercialized. The authors have developed a novel force-reflecting robotic catheter navigation system. The system is a ...

We developed a technique to continuously (i.e., automatically) monitor cardiac output (CO) and left atrial pressure (LAP) by mathematical analysis of the pulmonary artery pressure (PAP) waveform. The technique is unique to the few previous related techniques in that it jointly estimates the two hemodynamic variables and analyzes the PAP waveform over time scales greater than a ...

In the context of minimally invasive cardiac surgery, active vision-based motion compensation schemes have been proposed for mitigating problems related to physiological motion. However, robust and accurate visual tracking remains a difficult task. The purpose of this paper is to present a robust visual tracking method that estimates the 3D temporal and ...

Cardiac hypertrophy is well recognized as a cardiac manifestation of systemic disorders such as hypertension or intrinsic myocardial disease, but it can also reflect an underlying genetic defect. Molecular studies of inherited forms of cardiac hypertrophy have defined 2 novel pathways that lead to ...

Cardiac multidetector computed tomography (MDCT) for congenital heart disease is a useful, rapid, and noninvasive imaging technique bridging the gaps between echocardiography, cardiac catheterization, and cardiac MRI. Fast scan speed and greater anatomic coverage, combined with flexible ECG-synchronized scans and a low radiation dose, ...

Accurate evaluation of iron overload is necessary to establish the diagnosis of hemochromatosis and guide chelation treatment in transfusion-dependent anemia. The liver is the primary site for iron storage in patients with hemochromatosis or transfusion-dependent anemia, therefore, liver iron concentration (LIC) accurately reflects ...

such as cardiac problems will enable medical researchers to accurately determine the conditions that lead

Magnetic resonance imaging (MRI) will be performed pre-and post-flight as the most accurate means of measuring cardiac mass, including sufficient ...

To investigate the delivery of microwave energy by a catheter located inside the heart for the purpose of ablating small abnormal regions producing cardiac arrhythmias, a numerical model was developed. This model is based on the finite element method and can solve both the electromagnetic field and the temperature distribution resulting from the radiated power for ...

When it comes to the role of the clinical psychology in the cardiac settings, or psychocardiology, there is often a focus on acquired cardiac illnesses in the rehabilitation settings. However, the increase of adults with congenital heart disease due to technological advances in cardiology and cardiac surgery have created a new ...

Imaging of cardiac function and anatomy has advanced at an exponential rate over the past two decades. Our ability to quantitatively assess the degree of myocardial ischemia and accurately define the vascular anatomy using noninvasive techniques is greater than ever before. Current advances is cardiac imaging are allowing us to more ...

An interesting approach to study pulmonary diseases is the analysis of the respiratory muscle activity by means of electromyographic (EMG) and vibromyographic (VMG) signals. However, both signals are contaminated by cardiac activity reflected in electroca...

There have been significant recent advances in the past several years in the field of neurocutaneous vascular syndromes, including the development of more stringent diagnostic criteria for PHACE syndrome, the renaming of macrocephaly-cutis marmorata telangiectatica congenita to macrocephaly-capillary malformation to accurately reflect the true nature of ...

ObjectiveTo conduct a one year follow up study of patients seen in a combined rapid access chest pain, arrhythmia and heart failure clinic.MethodsLocal general practitioners, accident and emergency department clinicians and other hospital clinicians were invited to refer patients with a new presentation of chest pain, palpitations and suspected cardiac?induced breathlessness ...

BackgroundThe purpose of this study was to conduct a detailed experimental investigation of total ventricular activation time, determine how to measure it accurately, and compare it to the commonly used measure of QRS width. In addition we investigated a measure of electrical synchrony and determined its relationship to the duration of ventricular activation.MethodsUnipolar ...

A simple device for measuring the maximum upstroke velocity (Vmax) of the cardiac action potential is described. It consists of a differentiator, filter, and sample/hold peak detector. The sample/hold cycles are automatically set by the stimulus. The circuit can drive a standard pen recorder and digital voltmeter, resulting in rapid and accurate ...

The elderly patient with suspected cardiovascular disease poses a diagnostic challenge to the clinician. In many elderly patients the frequent unreliability of the history and the presence of multiple concurrent diseases and medications complicate accurate assessment of the patient's cardiac problem. Clinical laboratory and noninvasive ...

... that makes the exercise more accurately reflect how DNA testing works. The author describes a scenario in which ... exercise can be modified to reflect better how DNA testing works. A typical laboratory D...

Many remote sensing applications rely on accurate knowledge of the bidirectional reflection function

We have developed a photoacoustic technique to calculate high mirror reflectance using absorptance, transmittance, and scattering measurements.

The purpose of this descriptive study was to explore the experiences of women with cardiac disease in regard to cardiac risk factors, symptoms, and symptom interpretation. Interviews with a convenience sample of 21 African American and Caucasian female patients, aged 40-81 years with cardiac diagnoses, were taped and transcribed. Three ...

Skeletal and cardiac muscle contains actin isoforms that vary by two juxtaposed amino acids and two amino acid substitutions (Met299Leu and Ser358Thr). This close sequence homology does not allow cardiac and skeletal actin isoforms to be resolved in traditional SDS-PAGE analysis as the molecular weights (Deltamass = 32 Da) are not significantly different ...

Exercise training represents a successful and powerful strategy to prevent future cardiovascular disease. Paradoxically, performance of exercise is also associated with an increased risk of acute cardiac events. Accordingly, patients may present to hospital with cardiac symptoms following a bout of unaccustomed physical effort (e.g. exercise). Current ...

... of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy."e; (B ...

It is a dense sphere of uranium alloy with 60 laser reflectors on the surface. Reflected laser beams enable accurate geodetic measurements for the ...

... contention ever since that this belief was a self-fulfilling prophecy, and not an accurate reflection of the capabilities this nation had on hand. ...

Doubling principle providing rapid and accurate results for problem of diffuse reflection from plane

... is accurate and accessible the site was separated into two components that reflect that state of the mission before and after the July 4, 1997 landing. ...

... Those involved with any aspect of financial data management will want to make sure that financial reports accurately reflect the official ...

... and accurate method for calibrating an instrument for measuring the reflection coefficient and complex permittivity of unknown dielectric materials in ...

It was a dense sphere of uranium alloy with 60 laser reflectors on the surface. Reflected laser beams enabled accurate geodetic ... measurements for the ...

... The exposure of the concentration of vaccine based on optical density turned out to be very accurate and reflected small changes in concentrations. ...

Segmentation of the left ventricle is important in the assessment of cardiac functional parameters. Manual segmentation of cardiac cine MR images for acquiring these parameters is time-consuming. Accuracy and automation are the two important criteria in improving cardiac image segmentation methods. In this paper, we present a ...

Cardiac magnetic resonance imaging (MRI) for the diagnosis and management of many cardiac diseases has been established in clinical practice. It provides anatomic and functional information and is the most precise technique for quantification of ventricular volume, function and mass. Among cardiac MRI sequences used in clinical ...

Approximately 100 million people undergo noncardiac surgery annually worldwide. It is estimated that around 3% of patients undergoing noncardiac surgery experience a major adverse cardiac event. Although cardiac events, like myocardial infarction, are major cause of perioperative morbidity or mortality, its true incidence is difficult to assess. The risk ...

Automated and accurate segmentation of the aorta in 4D (3D+time) cardiovascular magnetic resonance (MR) image data is important for early detection of congenital aortic disease leading to aortic aneurysms and dissections. A computer-aided diagnosis method is reported that allows one to objectively identify subjects with connective tissue disorders from sixteen-phase 4D aortic ...

No currently used diagnostic test is an accurate predictor of patients who will develop morbidity or mortality from cardiac contusion. In a prospective study we used gated cardiac radionuclide angiography to assess cardiac function in 30 patients with blunt chest trauma, and we compared the results of this test ...

We have developed a novel gap measurement method called the �Advanced reflection analysis (AREA)� method, which is based on the analysis of the intensity of the reflected light from a reflective liquid crystal cell. By taking account of the anisotropy of the optical property of a half-mirror and reflected light ...

Cutaneous blood flow may be measured utilizing a continuous, noninvasive technique, laser Doppler velocimetry (LDV). Monitoring of cutaneous blood flow by LDV might be a useful method to monitor cardiac output. To test this hypothesis, sequential measurements of cardiac output, LDV, and transcutaneous oxygen (PtcO2) were made on 10 anesthetized dogs during ...

Edwards Lifesciences has recently introduced the FloTrac sensor and Vigileo monitor system for monitoring cardiac output continuously. It does not require thermodilution or dye dilution, but rather bases its calculations on arterial waveform characteristics in conjunction with patient demographic data. It is unique among arterial waveform cardiac output ...

Accurate estimation and tracking of dynamic tissue deformation is important to motion compensation, intra-operative surgical guidance and navigation in minimally invasive surgery. Current approaches to tissue deformation tracking are generally based on machine vision techniques for natural scenes which are not well suited to MIS because tissue deformation cannot be easily ...

With recent advances in our understanding of pulmonary hypertension and with ever increasing therapeutic options at our disposal, it remains disappointing that clinical markers of disease progression remain dated. There has long been a search for a more robust clinical correlate than the 6 minute walk test. Resting right heart pressures do not increase linearly with worsening disease, limiting ...

Thirteen patients with left ventricular aneurysms complicating myocardial infarction were studied by contrast angiography and by first pass radionuclide ventriculography. The ejection fraction of the contractile segment (EFCS) was measured from both studies using a double hemishperoid model, and the values correlated closely. There was a monotonic relation between EFCS and stroke volume index ...

Current multi-scale computational models of ventricular electromechanics describe the full process of cardiac contraction on both the micro- and macro- scales including: the depolarization of cardiac cells, the release of calcium from intracellular stores, tension generation by cardiac myofilaments, and mechanical contraction of the ...

Hypertrophic cardiomyopathy (HCM) exposes young patients to the risk of sudden death. The risk of sudden death separates the young patient from his peers, but connects him more closely to his physician. The physician may have a powerful effect replacing uninformed fears with accurate knowledge, restoring hope, and helping the patient shift focus from the fear of dying to ...

CardioDynamics International Corporation (CDIC) has created the BioZ(TM) System through a Small Business Innovation Research (SBIR) award from Johnson Space Center, providing patients and physicians with a cost-effective and highly accurate monitoring sys...

The advent of high performance gradients and parallel imaging schemes has made real-time MRI a stable mode of scanning. Cardiac tagging techniques have been shown to give extremely precise and accurate estimates of the evaluation of myocardial function, W...

We have developed a generic ionic model of single-cell rabbit sinoatrial node (SAN) electrical activity, employing Markov-state kinetics for membrane ionic currents. By suitable choice of parameters, the model is able to accurately reproduce a wide range ...

An accurate grasp of blood flow patterns in a human heart is important to evaluate cardiac diseases of patients. Doppler ultrasound method is widely used to visualize blood flow patterns and has obtained excellent results in diagnosis. However, the output...

A method for on-line accurate monitoring and precise control of molecular beam epitaxial growth of Groups III-III-V or Groups III-V-V layers in an advanced semiconductor device incorporates reflection mass spectrometry. The reflection mass spectrometry is responsive to intentional perturbations in molecular fluxes incident on a ...

This invention is comprised of a method for on-line accurate monitoring and precise control of molecular beam epitaxial growth of Groups III-III-V or Groups III-V-V layers in an advanced semiconductor device incorporates reflection mass spectrometry. The reflection mass spectrometry is responsive to intentional perturbations in ...

A method for on-line accurate monitoring and precise control of molecular beam epitaxial growth of Groups III-III-V or Groups III-V-V layers in an advanced semiconductor device incorporates reflection mass spectrometry. The reflection mass spectrometry is responsive to intentional perturbations in molecular fluxes incident on a ...

This report describes the advantages of recording cardiac potentials in digital rather than in analog form and of using statistical methods that compare a patient's measurements with values measured in a normal population. In this study, expansion of the time axis in digitized electrocardiograms was used to accurately determine the moments when the Q, R, ...

It remains unclear whether cardiac iodine-123-labeled metaiodobenzylguanidine ((123)I-MIBG) uptake is clinically related to autonomic dysfunction on conventional autonomic function testing in de novo Parkinson's disease (PD). We therefore studied the relation between cardiac (123)I-MIBG uptake and cardiovascular autonomic dysfunction in patients with de ...

Segmentation based registration of myocardium in cardiac perfusion images G. Adluru1,2 , E. V. Di and segmentation of the left ventricular myocardium in the images are important steps to extract useful qualitative myocardium in the perfusion images is required to aid the visual analysis and to get accurate semi

Cardiac computed tomography (CT) is a rapidly advancing technology that complements echocardiography in the imaging evaluation of congenital heart disease. CT can play an important role in diagnosis and follow-up via assessment of anatomic features and postoperative complications. An understanding of the pathophysiology and imaging characteristics of various congenital heart ...

The language describing coronary vasculature provides a suitable paradigm for research in semantic interpretation of anatomical text. As a pilot project we investigate the possibility of highly accurate retrieval of arterial branching relationships asserted in cardiac catheterization reports. Our methodology relies on the cooperation of underspecified ...

The ability to simulate the surface energy balance and microclimate within a plant canopy is contingent upon accurate simulation of radiation exchange within the canopy. Accurate radiation simulations require some assumption of leaf angle distribution to compute transmissivity, reflection and scatte...

Effective and proactive decisions about intelligence gathering depend on accurate models of an adversary. Specifically, such models need to accurately reflect the cause-and-effect dependencies within the systemic behavior of the adversary. Such models can...

This citation summarizes a one-page announcement of technology available for utilization. The rotation of a reflecting part is measured accurately and without mechanical contact by an optical interferometer. The apparatus sneses the movement of interferen...

Accurate measurement of moisture content is a prime requirement in hydrological, geophysical, and biogeochemical research, as well as for material characterization and process control. Within these areas, accurate measurements of the surface area and bound water content are becoming increasingly imp...

...reflect complete, current, and accurate cost...to the date of the change order. (2...certify that proposed change order cost data are complete, current, and accurate. EPA...cost analysis on any change order....

Cardiac imaging with radiotracers plays an important role in patient evaluation, and the development of suitable imaging instruments has been crucial. While initially performed with the rectilinear scanner that slowly transmitted, in a row-by-row fashion, cardiac count distributions onto various printing media, the Anger scintillation camera allowed ...

Cardiac sodium channel are protein complexes that are expressed in the sarcolemma of cardiomyocytes to carry a large inward depolarizing current (INa) during phase 0 of the cardiac action potential. The importance of INa for normal cardiac electrical activity is reflected by the high incidence of arrhythmias in ...

Cardiac sodium channel are protein complexes that are expressed in the sarcolemma of cardiomyocytes to carry a large inward depolarizing current (I_Na) during phase 0 of the cardiac action potential. The importance of I_Na for normal cardiac electrical activity is ...

Digitalis intoxication is among the most common serious adverse drug reactions in clinical medicine. While the recent development of a radioimmunoassay to accurately measure serum concentrations of digoxin has been of assistance, digitalis intoxication remains a difficult diagnosis to make with certainty. The difficulty in diagnosing digitalis intoxication arises from the ...

The degree of exercise-induced cardiac dysfunction and its relation to the anaerobic threshold were evaluated in 23 patients with chronic heart disease. A symptom-limited exercise test was performed with a cycle ergometer with work rate increased by 1 W every 6 seconds. Left ventricular function, as reflected by ejection fraction, was continuously ...

Pulse pressure analysis algorithms are commonly used to measure cardiac output and to allow for the rational titration of therapy in critically ill patients. The ability of these algorithms to accurately track changes in stroke volume (and cardiac output) is thus very important. Most of the currently available algorithms can provide ...

The evaluation of left ventricular systolic function is one of the most common reasons for referral for a non-invasive cardiac imaging study. In addition to its diagnostic and prognostic value, an assessment of ejection fraction can also be used to guide medical and device therapy. Thus, obtaining an accurate and reproducible assessment of LVEF is ...

The management of acute, severe cardiac valvular regurgitation requires expeditious multidisciplinary care. Although acute, severe valvular regurgitation can be a true surgical emergency, accurate diagnosis and subsequent treatment decisions require clinical acumen, appropriate imaging, and sound judgment. An accurate and timely ...

An estimation of cardiac output can be obtained from arterial pressure waveforms using the Modelflow method. However, whether the assumptions associated with Modelflow calculations are accurate during whole body heating is unknown. This project tested the hypothesis that cardiac output obtained via Modelflow ...

into one end of the cable and relies on the pulse being reflected back to the source due to an electrical discontinuity at the faulted location. The fault ...

... and reflect more accurate measurement available through new GIS technology. Land added to the boundary after the 1976 enactment, ... ...

... 1968 and again after the 1975 competitions, the rules and procedures of the competition were changed to more accurately reflect combat conditions ...

... pump adjusted to a constant flow rate (about 2 ... uptake of the parasites by the liver and ... more accurately reflected immunological elimination (Table ...

problem with the translation of data between the state system and EPA exists for DMR, schedules, and some enforcement data, so the data metrics do not reflect an accurate view of...

Jun 7, 2002 ... Satellite remote sensing of clouds using solar radiation requires an accurate estimate of the clear-sky reflectance for a given scene to ...

The optical properties and optical constants of water and aqueous solutions were studied to develop an accurate tabulation of graphical representations of the optical constants through a broad spectrum. Manuscripts of articles are presented concerning ext...

... and reflect more accurate measurement available through new GIS technology. Land added to the boundary after the 1978 recommendation, ... ...

... and reflect more accurate measurement available through new GIS technology. Land added to the boundary after the recommendation has ... ...

... and reflect more accurate measurement available through new GIS technology. Land added to the boundary after the 1978 recommendation ... ...

... and reflect more accurate measurement available through new GIS technology. Land added to the boundary after the 1978 recommendation ... ...

... and reflect more accurate measurement available through new GIS technology. Land added to the boundary after the 1978 recommendation ... ...

... South Korea's twin overarching goals of security and unification accurately reflect its central stake in North Korea's evolu- tion. ...

... under the assumption that a more accurate model of the distribution of the Erbium ion, one that reflects the physical fact that Erbium ions are not ...

... of morphological characteristics. However, this scheme has been criticized for not accurately reflecting evolutionary relationships within the ... the Indian Ocean from Africa. It has been said that the p...

In addition, EPA also publishes criteria intended to accurately reflect the latest scientific knowledge. EPA's national recommended water quality criteria ...

Many criticisms have been launched against grades in general because of their perceived failure to portray student achievement accurately. In many instances, these criticisms are just. But, if student grades are reflections of measurable instructional obj

A raw, total economic loss is computed per grid cell using a regional economic loss rate derived from EM-DAT records. To more accurately reflect the ...

7 hours ago ... The instrument is designed to measure accurately the diagnostic mineral absorption bands of solar radiation reflected from the lunar surface ...

may reasonably be anticipated to endanger public health or welfare'' and to issue air quality criteria for them. These air quality criteria are to ``accurately reflect the...

... and its analogues in food that does not raise ... We do not believe that this statement accurately reflects the ... that the safety and risk assessment did not address ...

... Hanscom AFB, MA 01731-5000 ... be accurately used to calculate the effects of attenuation in ... of plane wave reflection/transmission coefficients in the ...

required to accurately reflect physical properties, covariance, and economies ... DE-FG02-08ER25861 and DE-FG02-09ER25869, and the National Science ...

... Acceptance of these tools hinges upon end user trust in the predicted results ... it is essential that those models accurately reflect true physical behavior ...

Most computer clocks are not accurate enough to be able to reflect the ..... The value 60 can only occur on those Java Virtual Machines that take leap ...

an accurate estimate of the solar energy budget from sat- .... clear sky pixel locations. served from different satellite view angles may be very different. ...

... not accurately reflect his potential and motivation to ... Ethnicity African American AFRICANAMERICAN ... whether one will attrite for academic reasons. ...

General analytical formulas derived within a uniform approximation are utilized for determining the wave pattern of a vertically propagating HF wave totally or partially reflected from the ionosphere. The full three-dimensional wave is calculated accurate...

The addition of phase difference measurements to partial reflection experiments is discussed, and some advantages of measuring electron density this way are pointed out. The additional information obtained reduces the requirement for an accurate predeterm...

Surface bidirectional reflectance distribution function (BRDF) influences not only radiance just about the surface, but that emerging from the top of the atmosphere (TOA). In this study we propose a new, fast and accurate, algorithm CASBIR (correction for...

The determination of crystal lattice and orientation parameters, which is the customary prerequisite to automatic single-crystal data collection, requires an accurate reflection peak centering procedure. A rapid and unique centering method for a computer-...

Studies were carried out to characterize and explain the infrared absorption and reflectance spectra of molecular crystals. Accurate methods of measuring reflectance spectra and of processing the data to obtain optical constants were developed and applied...

The dependence of the reflected and transmitted light from clouds on the single scattering albedo wo is studied. The multiply scattered path of the photon in the cloud is accurately simulated by Monte Carlo techniques. When the cloud is thin and the surfa...

A key problem for face recognition has been accurate identification under variable illumination conditions. Conventional video cameras sense reflected light so that image gray values are a product of both intrinsic skin reflectivity and external incident ...

The study is to generate accurate experimental results on reflectivity of metals and to compare them with the predictions made by theoretical models and also to predict values in longer wavelength range not covered by this experiment. The theories of the ...

A new surface analytic technique is proposed, called Critical Reflection Activation Analysis (CRAA). The technique allows accurate depth profiling of impurities less than or equal to 100 A beneath a surface. The depth profile of the impurity is simply rel...

High fidelity infrared signature modelling of targets requires the accurate representation of not only factors concerned with the target itself but also the immediate environment. Modelling of multiple reflections from extended thermal sources can often b...

...December 15, 1978, in order to reflect coverage of the public sector only. (b) Standards identical to or at least...be revised by April 1, 1979, to show coverage of the public sector only and to accurately reflect the current...

Accurate and fast fusion and display of real-time images of anatomy and associated data is critical for effective use in image guided procedures, including image guided cardiac catheter ablation. We have developed a piecewise patch-to-model matching method, a modification of the contractive projection point technique, for accurate and ...

Cardiac injury due to blunt or penetrating chest trauma is common and is associated with significant morbidity and mortality. Understanding the mechanisms, types, and complications of cardiac injuries and the roles of various imaging modalities in characterizing them is important for appropriate diagnosis and treatment. These injuries have not been well ...

A study was undertaken to identify the most accurate /sup 99m/Tc-labeled radiopharmaceutical and to determine the accuracy of a noninvasive radionuclide technique or cardiac output determinations. Phase I employed sodium pertechnetate, stannous pyrophosphate with sodium pertechnetate, /sup 99m/Tc red blood cells, and /sup 99m/Tc human serum albumin as ...

Cardiac calcified amorphous tumors (CATs) can arise in all four chambers of the heart. Cardiac CATs can cause diverse symptoms according to their locations, and mass or embolic effects. Pulmonary emboli arising from cardiac CATs have been reported, but the true incidence is unknown due to their rarity. Herein we report a rare case with ...