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PubMed Journals Articles About "Technical Performance Of A New Cardiac Technology "IQ-SPECT" Applied To SCINTI-CT Myocardial Imaging With 99mTc-Sestamibi In Coronary Patients" RSS

09:34 EST 13th November 2019 | BioPortfolio

Technical Performance Of A New Cardiac Technology "IQ-SPECT" Applied To SCINTI-CT Myocardial Imaging With 99mTc-Sestamibi In Coronary Patients PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Technical Performance Of A New Cardiac Technology "IQ-SPECT" Applied To SCINTI-CT Myocardial Imaging With 99mTc-Sestamibi In Coronary Patients articles that have been published worldwide.

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Showing "Technical Performance Cardiac Technology quot SPECT quot Applied" PubMed Articles 1–25 of 27,000+

Reply to Comment on "Mortality from heart disease following occupational radiation exposure: analysis of the National Registry for Radiation Workers (NRRW) in the United Kingdom".

Reply to Comment on "Mortality from heart disease following occupational radiation exposure: analysis of the National Registry for Radiation Workers (NRRW) in the United Kingdom&quot.


Comparison between planar, SPECT and SPECT/computed tomography systems in 99mTc- nanocolloid sentinel lymph node imaging: phantom design and clinical investigations.

It was aimed to examine the performance of planar, SPECT and SPECT/CT in lymph nodes detection of breast cancer.

Simultaneous Tc-99m PYP/Tl-201 dual-isotope SPECT myocardial imaging in patients with suspected cardiac amyloidosis.

Assessment of myocardial uptake of Tc-99m-pyrophosphate (Tc-99m PYP) is pivotal in distinguishing transthyretin-associated cardiac amyloidosis (ATTR) from light chain amyloid (AL). It is often difficult to differentiate myocardial uptake from blood pool radioactivity with planar imaging or SPECT. We studied whether simultaneous dual-isotope Tc-99m PYP/Tl-201 SPECT improves assessment of Tc-99m PYP uptake compared to single-isotope SPECT.


Performance evaluation of quantitative SPECT/CT using NEMA NU 2 PET methodology.

Although PET is routinely evaluated using NEMA NU2 as standard in the clinic, standard methodology for evaluating the performance of quantitative SPECT systems has not been established. In this study, the quantitative performance of the Symbia Intevo SPECT/CT was evaluated for two common isotopes (99mTc, 177Lu) and benchmarked against the performance of a PET/CT. A further aim was to demonstrate the utility of adapting NEMA NU2 PET measurements to SPECT. In addition, dead-time and resolution recovery were e...

Evaluating the Performance of Cardiac Pulse Duplicators Through the Concept of Fidelity.

The advanced design techniques used in modern prosthetic heart valve (PHV) development require accurate replication of the entire cardiac cycle. While cardiac pulse duplicator (CPD) design has a direct impact on the PHV test data generated, no clear guidelines exist to evaluate the CPD's performance. In response to this, we present a method to quantitatively assess CPD performance.

Transitioning to whole-body SPECT/CT in prostate cancer staging: a new concept for a better imaging workflow.

 Whole-body bone scan (BS) is the clinical standard in detecting bone metastases in prostate cancer patients. Additional SPECT/CT has allowed to significantly increase its diagnostic accuracy. However, performing both planar and additional SPECT/CT prolongs the total examination time and lowers patient throughput. In this study we aim to assess the diagnostic performance of a SPECT/CT-only protocol compared to the traditional procedure that is BS with a facultative SPECT/CT in case of unclear findings.

Comment on "Mortality from heart disease following occupational radiation exposure: analysis of the National Registry for Radiation Workers (NRRW) in the United Kingdom".

Comment and comparison of the NRRW and INWORKS studies of mortality from CVD after radiation exposure to workers in the UK.

A novel clinical risk prediction model for myocardial infarction, coronary revascularization, and cardiac death according to clinical, exercise, and gated SPECT variables (VH-RS).

To create a risk score for cardiac events (CE) according to clinical, exercise, and gated SPECT variables.

Performance evaluation of a Compton SPECT imager for determining the position and distribution of Ac in targeted alpha therapy: A Monte Carlo simulation based phantom study.

In this study, the performance of a Compton Single Photon Emission Computed Tomography (SPECT) imager when in vivo monitoring the position and distribution of Ac radionuclide in targeted alpha therapy (TAT) was evaluated. When Ac radionuclide, which emits various γ-rays (218 and 440 keV), is used in TAT, both the photoelectric and Compton scattering events can be used for image reconstruction. Moreover, all information pertaining to the various γ-rays of the Ac radionuclide can be individually or simult...

Technical factors affecting cardiac surgical mortality in Australia.

Examination of potentially avoidable issues in surgical deaths can provide a basis for quality improvement. Perioperative technical factors in cardiac surgery may lead or contribute to patient mortality. Using data from a well-established and comprehensive national surgical mortality audit, we aimed to identify and describe clinical management issues leading to mortality in Australian cardiac surgical patients.

3D iterative reconstruction can do so much more that reduce dose.

Recent advances in software and hardware for cardiac SPECT have the potential to revolutionize nuclear cardiology. It is easy to use these technologies to maintain the status quo and lower radiation dose, despite the fact there is very little evidence that lowering patient dose in already low dose imaging protocols confers any benefit to patients. Cardiac SPECT has tremendous potential for risk stratification, molecular tracers, and high temporal resolution management of patients with electrophysiological d...

Direct List Mode Parametric Reconstruction for Dynamic Cardiac SPECT.

Recently introduced stationary dedicated cardiac SPECT scanners provide new opportunities to quantify myocardial blood flow (MBF) using dynamic SPECT. However, comparing to PET, the low sensitivity of SPECT scanners affects MBF quantification due to the high noise level, especially for 201Thallium (201Tl) due to its typically low injected dose. The conventional indirect method for generating parametric images typically starts by reconstructing a time series of frame images followed by fitting the time-activ...

The role of 99mTc-HMPAO-labelled white blood cell scintigraphy in the diagnosis of cardiac device-related infective endocarditis.

The hybrid technique of single-photon emission tomography and computed tomography with technetium99m-hexamethylpropyleneamine oxime-labelled leucocytes (99mTc-HMPAO-SPECT/CT) is an emerging diagnostic technique in patients with cardiac device-related infective endocarditis (CDRIE). This prospective study assessed the 99mTc-HMPAO-SPECT/CT diagnostic profile and its added value to the modified Duke criteria (mDuke) in CDRIE diagnostic work-up.

Diagnostic performance of imaging investigations in detecting and differentiating cardiac amyloidosis: a systematic review and meta-analysis.

The study aims to systematically assess the diagnostic performance of cardiac magnetic resonance (CMR) and nuclear scintigraphy (index tests) for the diagnosis and differentiation of subtypes of cardiac amyloidosis.

Effect of Health and Training on Ultrasensitive Cardiac Troponin in Marathon Runners.

Cardiac troponin (cTn) is the gold standard biomarker for assessing cardiac damage. Previous studies have demonstrated increases in plasma cTn because of extreme exercise, including marathon running. We developed an easy-to-use, ultrasensitive assay for cardiac troponin I (cTnI) by combining single-molecule counting (SMC™) technology with dried blood spot (DBS) collection techniques and validated the assay on a cohort of marathon runners by correlating postmarathon cTnI elevations with training or risk va...

Basic life support training using shared mental models improves team performance of first responders on normal wards: a randomised controlled simulation trial.

Survival of in-hospital cardiac arrest (IHCA) depends on fast and effective action of the first responding team. Not only technical skills, but professional teamwork is required. Observational studies and theoretical models suggest that shared mental models of members improve teamwork. This study investigated if a training on shared mental models, improves team performance in simulated in-hospital cardiac arrest.

Fast and accurate quantitative determination of the lung shunt fraction in hepatic radioembolization.

Radioembolization treatment is preceded by a Tc-MAA safety procedure, which is used to estimate the lung shunt fraction (LSF). Normally, the LSF is estimated by using the geometric mean of planar scintigraphy (PS-GM). However, concern has been raised about the potential overestimation of the LSF by PS-GM. Alternatively, SPECT/CT may be used for LSF estimation, but requires lengthy acquisitions, 3D segmentation, and has a limited field of view, which calls for extrapolation of the reconstructed lung counts, ...

Use of cardiac magnetic resonance imaging and single photon emission computed tomography for the diagnosis of stable coronary artery disease in Switzerland.

Direct invasive testing in the diagnosis of stable coronary artery disease (CAD) involves high costs and relevant risks. By comparison, single-photon emission computed tomography (SPECT) and cardiac magnetic resonance imaging (CMR) are noninvasive diagnostic tests. SPECT is currently the most widely used diagnostic technique, but new medical and economic evidence favours CMR. Guidelines do not recommend one technique in preference to the other, and their use in Switzerland is poorly documented, as a scoping...

Comparison between planar, SPECT and SPECT/computed tomography systems in 99mTc- nanocolloid sentinel lymph node imaging: phantom design and clinical investigations. Erratum.

Dynamic Hyperinflation Impairs Cardiac Performance During Exercise in COPD.

To investigate the correlation between a plateau in minute ventilation (Equation is included in full-text article.)E during cardiopulmonary exercise tests (CPETs) and its impact on cardiac performance.

Role of Gallium-SPECT-CT in the Management of Patients with Ventricular Assist Device-Specific Percutaneous Driveline Infection.

Percutaneous driveline infection is a major complication of left ventricular assist device (LVAD). This study evaluated the role of Gallium-67 single-photon emission computed tomography (Ga-SPECT)-CT in LVAD-specific percutaneous driveline infection.

How do information sources influence the reported Cerebral Performance Category (CPC) for in-hospital cardiac arrest survivors? An observational study from the UK National Cardiac Arrest Audit (NCAA).

Cerebral Performance Category (CPC) can be used to categorise neurological outcome after cardiac arrest. There is no consensus on what information sources can be used to derive the CPC. This study describes the information sources used by hospitals participating in the UK National Cardiac Arrest Audit (NCAA) and their impact on the CPC reported for individuals surviving an in-hospital cardiac arrest (IHCA).

An exploration of BCI performance variations in people with amyotrophic lateral sclerosis using longitudinal EEG data.

Brain-computer interface (BCI) technology enables people to use direct measures of brain activity for communication and control. The National Center for Adaptive Neurotechnologies (NCAN) and Helen Hayes Hospital are studying long-term independent home use of P300-based BCIs by people with amyotrophic lateral sclerosis (ALS). This BCI use takes place without technical oversight, and users can encounter substantial variation in their day-to-day BCI performance. The purpose of this study is to identify and eva...

Research on pollution prevention and control BAT of PCDD/Fs in secondary copper industry.

Secondary copper industry has received more and more attention due to its high Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) emissions. Best available technologies (BAT) plays an important role in prevention of PCDD/Fs pollution for secondary copper industry and is recommended by the Stockholm Convention on POPs. In this study, AHP-Delphi method-fuzzy comprehensive evaluation method is used to evaluate the 5 smelting technologies that are usually applied in secondary copper industry. The res...

A case against the trickle-down effect in technology ecosystems.

Technology evolution describes a change in a technology performance over time. The modeling of technology evolution is crucial for designers, entrepreneurs, and government officials to set reasonable R&D targets, invest in promising technology, and develop effective incentive policies. Scientists and engineers have developed several mathematical functions such as logistic function and exponential function (Moore's Law) to model technology evolution. However, these models focus on how a technology evolves in...


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