Browsing by Subject "Sensitivity and Specificity"
Now showing items 1-20 of 43
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Biomarkers to help guide management of patients with pulmonary nodules.
(Am J Respir Crit Care Med, 2013-08-15)RATIONALE: Indeterminate pulmonary nodules are a common radiographic finding and require further evaluation because of the concern for lung cancer. OBJECTIVES: We developed an algorithm to assign patients to a low- or high-risk ... -
CD4 enumeration technologies: a systematic review of test performance for determining eligibility for antiretroviral therapy.
(PLoS One, 2015)BACKGROUND: Measurement of CD4+ T-lymphocytes (CD4) is a crucial parameter in the management of HIV patients, particularly in determining eligibility to initiate antiretroviral treatment (ART). A number of technologies exist ... -
Clinical assessment and characterization of a dual tube kilovoltage X-ray localization system in the radiotherapy treatment room.
(Journal of applied clinical medical physics, 2008-01-13)INTRODUCTION:Although flat-panel based X-ray imaging has been well tested in diagnostic radiology, its use as an image-guided-radiotherapy (IGRT) system in a treatment room is new and requires systematic assessment. MATERIALS ... -
Contrast in intracardiac acoustic radiation force impulse images of radiofrequency ablation lesions.
(Ultrason Imaging, 2014-04)We have previously shown that intracardiac acoustic radiation force impulse (ARFI) imaging visualizes tissue stiffness changes caused by radiofrequency ablation (RFA). The objectives of this in vivo study were to (1) quantify ... -
Cost-effectiveness analysis of the diagnosis of meniscus tears.
(Am J Sports Med, 2015-01)BACKGROUND: Diagnostic imaging represents the fastest growing segment of costs in the US health system. This study investigated the cost-effectiveness of alternative diagnostic approaches to meniscus tears of the knee, a ... -
Delivery efficiency of an Elekta linac under gated operation.
(Journal of applied clinical medical physics, 2014-09-08)In this study, we have characterized the efficiency of an Elekta linac in the delivery of gated radiotherapy. We have explored techniques to reduce the beam-on delay and to improve the delivery efficiency, and have investigated ... -
Detection of depression in low resource settings: validation of the Patient Health Questionnaire (PHQ-9) and cultural concepts of distress in Nepal.
(BMC Psychiatry, 2016-03-08)BACKGROUND: Despite recognition of the burden of disease due to mood disorders in low- and middle-income countries, there is a lack of consensus on best practices for detecting depression. Self-report screening tools, such ... -
Development of a TaqMan Array Card for Acute-Febrile-Illness Outbreak Investigation and Surveillance of Emerging Pathogens, Including Ebola Virus.
(J Clin Microbiol, 2016-01)Acute febrile illness (AFI) is associated with substantial morbidity and mortality worldwide, yet an etiologic agent is often not identified. Convalescent-phase serology is impractical, blood culture is slow, and many pathogens ... -
Diagnostic Accuracy of Electrographic Seizure Detection by Neurophysiologists and Non-Neurophysiologists in the Adult ICU Using a Panel of Quantitative EEG Trends.
(J Clin Neurophysiol, 2015-08)PURPOSE: To evaluate the sensitivity and specificity of a panel of quantitative EEG (qEEG) trends for seizure detection in adult intensive care unit (ICU) patients when reviewed by neurophysiologists and non-neurophysiologists. ... -
Emergency department point-of-care ultrasound in out-of-hospital and in-ED cardiac arrest.
(Resuscitation, 2016-12)Point-of-care ultrasound has been suggested to improve outcomes from advanced cardiac life support (ACLS), but no large studies have explored how it should be incorporated into ACLS. Our aim was to determine whether cardiac ... -
Evaluating marker-guided treatment selection strategies.
(Biometrics, 2014-09)A potential venue to improve healthcare efficiency is to effectively tailor individualized treatment strategies by incorporating patient level predictor information such as environmental exposure, biological, and genetic ... -
Evaluating the number of stages in development of squamous cell and adenocarcinomas across cancer sites using human population-based cancer modeling.
(PLoS One, 2012)BACKGROUND: Adenocarcinomas (ACs) and squamous cell carcinomas (SCCs) differ by clinical and molecular characteristics. We evaluated the characteristics of carcinogenesis by modeling the age patterns of incidence rates of ... -
Evaluation of a digital microfluidic real-time PCR platform to detect DNA of Candida albicans in blood.
(Eur J Clin Microbiol Infect Dis, 2012-09)Species of Candida frequently cause life-threatening infections in neonates, transplant and intensive care unit (ICU) patients, and others with compromised host defenses. The successful management of systemic candidiasis ... -
Evaluation of T-Wave Morphology in Patients With Left Bundle Branch Block and Suspected Acute Coronary Syndrome.
(The Journal of emergency medicine, 2016-09)T-wave morphology in the setting of left bundle branch block (LBBB) has been proposed as an indicator of myocardial ischemia.We sought to identify T-wave morphology findings in patients with LBBB that predict non-ST-segment ... -
Functional evolution of mammalian odorant receptors.
(PLoS Genet, 2012)The mammalian odorant receptor (OR) repertoire is an attractive model to study evolution, because ORs have been subjected to rapid evolution between species, presumably caused by changes of the olfactory system to adapt ... -
Gene expression signatures that predict radiation exposure in mice and humans.
(PLoS Med, 2007-04)BACKGROUND: The capacity to assess environmental inputs to biological phenotypes is limited by methods that can accurately and quantitatively measure these contributions. One such example can be seen in the context of exposure ... -
Gene expression-based classifiers identify Staphylococcus aureus infection in mice and humans.
(PLoS One, 2013)Staphylococcus aureus causes a spectrum of human infection. Diagnostic delays and uncertainty lead to treatment delays and inappropriate antibiotic use. A growing literature suggests the host's inflammatory response to the ... -
High Dimensional Variable Selection with Error Control.
(Biomed Res Int, 2016)Background. The iterative sure independence screening (ISIS) is a popular method in selecting important variables while maintaining most of the informative variables relevant to the outcome in high throughput data. However, ... -
Instrument independent diffuse reflectance spectroscopy.
(J Biomed Opt, 2011-01)Diffuse reflectance spectroscopy with a fiber optic probe is a powerful tool for quantitative tissue characterization and disease diagnosis. Significant systematic errors can arise in the measured reflectance spectra and ... -
Intracardiac acoustic radiation force impulse (ARFI) and shear wave imaging in pigs with focal infarctions.
(IEEE Trans Ultrason Ferroelectr Freq Control, 2013-08)Four pigs, three with focal infarctions in the apical intraventricular septum (IVS) and/or left ventricular free wall (LVFW), were imaged with an intracardiac echocardiography (ICE) transducer. Custom beam sequences were ...
