Browsing by Subject "Tomography, X-Ray Computed"
Now showing items 1-20 of 34
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A blood-based biomarker panel to risk-stratify mild traumatic brain injury.
(PloS one, 2017-01)Mild traumatic brain injury (TBI) accounts for the vast majority of the nearly two million brain injuries suffered in the United States each year. Mild TBI is commonly classified as complicated (radiographic evidence of ... -
A neural network-based method for spectral distortion correction in photon counting x-ray CT.
(Physics in medicine and biology, 2016-08)Spectral CT using a photon counting x-ray detector (PCXD) shows great potential for measuring material composition based on energy dependent x-ray attenuation. Spectral CT is especially suited for imaging with K-edge contrast ... -
Aorta-to-pulmonary vein fistula in an asymptomatic 25-year-old man.
(Circulation, 2013-04-23) -
Auditory morphology and hearing sensitivity in fossil New World monkeys.
(Anatomical record (Hoboken, N.J. : 2007), 2010-10)In recent years it has become possible to investigate the hearing capabilities in fossils by analogy with studies in living taxa that correlate the bony morphology of the auditory system with hearing sensitivity. In this ... -
Cherenkov emissions for studying tumor changes during radiation therapy: An exploratory study in domesticated dogs with naturally-occurring cancer.
(PloS one, 2020-01)<h4>Purpose</h4>Real-time monitoring of physiological changes of tumor tissue during radiation therapy (RT) could improve therapeutic efficacy and predict therapeutic outcomes. Cherenkov radiation is a normal byproduct of ... -
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 ... -
Computed tomography dose index and dose length product for cone-beam CT: Monte Carlo simulations.
(Journal of applied clinical medical physics, 2011-01-19)Dosimetry in kilovoltage cone beam computed tomography (CBCT) is a challenge due to the limitation of physical measurements. To address this, we used a Monte Carlo (MC) method to estimate the CT dose index (CTDI) and the ... -
Computed tomography imaging of primary lung cancer in mice using a liposomal-iodinated contrast agent.
(PLoS One, 2012)PURPOSE: To investigate the utility of a liposomal-iodinated nanoparticle contrast agent and computed tomography (CT) imaging for characterization of primary nodules in genetically engineered mouse models of non-small cell ... -
Deep learning based spectral extrapolation for dual-source, dual-energy x-ray computed tomography.
(Medical physics, 2020-09)<h4>Purpose</h4>Data completion is commonly employed in dual-source, dual-energy computed tomography (CT) when physical or hardware constraints limit the field of view (FoV) covered by one of two imaging chains. Practically, ... -
Does improved access to diagnostic imaging results reduce hospital length of stay? A retrospective study.
(BMC Health Serv Res, 2010-09-06)BACKGROUND: One year after the introduction of Information and Communication Technology (ICT) to support diagnostic imaging at our hospital, clinicians had faster and better access to radiology reports and images; direct ... -
Dual-energy computed tomography with advanced postimage acquisition data processing: improved determination of urinary stone composition.
(J Endourol, 2010-03)INTRODUCTION: The characterization of urinary calculi using noninvasive methods has the potential to affect clinical management. CT remains the gold standard for diagnosis of urinary calculi, but has not reliably differentiated ... -
Effect of machine learning methods on predicting NSCLC overall survival time based on Radiomics analysis.
(Radiation oncology (London, England), 2018-10-05)BACKGROUND:To investigate the effect of machine learning methods on predicting the Overall Survival (OS) for non-small cell lung cancer based on radiomics features analysis. METHODS:A total of 339 radiomic features were ... -
Evaluating renal lesions using deep-learning based extension of dual-energy FoV in dual-source CT-A retrospective pilot study.
(European journal of radiology, 2021-06)<h4>Purpose</h4>Dual-source (DS) CT, dual-energy (DE) field of view (FoV) is limited to the size of the smaller detector array. The purpose was to establish a deep learning-based approach to DE extrapolation by estimating ... -
Femoral malrotation after intramedullary nailing in obese versus non-obese patients.
(Injury, 2014-07)OBJECTIVE: Intramedullary nailing (IMN) of obese patients with femoral fractures can be difficult due to soft tissue considerations and overall body habitus. Complications including malrotation can occur and have significant ... -
Fibroblast growth factor 23 is not associated with and does not induce arterial calcification.
(Kidney international, 2013-06)Elevated fibroblast growth factor 23 (FGF23) is associated with cardiovascular disease in patients with chronic kidney disease. As a potential mediating mechanism, FGF23 induces left ventricular hypertrophy; however, its ... -
Hybrid spectral CT reconstruction.
(PLoS One, 2017)Current photon counting x-ray detector (PCD) technology faces limitations associated with spectral fidelity and photon starvation. One strategy for addressing these limitations is to supplement PCD data with high-resolution, ... -
Imaging of musculoskeletal bacterial infections by [124I]FIAU-PET/CT.
(PLoS One, 2007-10-10)BACKGROUND: Traditional imaging techniques for the localization and monitoring of bacterial infections, although reasonably sensitive, suffer from a lack of specificity. This is particularly true for musculoskeletal infections. ... -
In vivo guidance and assessment of liver radio-frequency ablation with acoustic radiation force elastography.
(Ultrasound Med Biol, 2008-10)The initial results from clinical trials investigating the utility of acoustic radiation force impulse (ARFI) imaging for use with radio-frequency ablation (RFA) procedures in the liver are presented. To date, data have ... -
In vivo visualization of abdominal malignancies with acoustic radiation force elastography.
(Phys Med Biol, 2008-01-07)The utility of acoustic radiation force impulse (ARFI) imaging for real-time visualization of abdominal malignancies was investigated. Nine patients presenting with suspicious masses in the liver (n = 7) or kidney (n = 2) ... -
Index of suspicion. Case 1: Lymphadenopathy, prolonged hematuria, proteinuria, and weight loss in a teenage boy. Case 2: Red, Swollen, painful eye in a 12-year-old boy with methylmalonic acidemia. Case 3: Ptosis and diplopia after a respiratory infection in a 7-year-old girl.
(Pediatrics in review, 2012-02)
