Browsing by Subject "Tomography, X-Ray Computed"
Now showing items 1-20 of 24
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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 ... -
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 ... -
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 ... -
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) ... -
Micro-CT imaging of breast tumors in rodents using a liposomal, nanoparticle contrast agent.
(Int J Nanomedicine, 2009)A long circulating liposomal, nanoscale blood pool agent encapsulating traditional iodinated contrast agent (65 mg I/mL) was used for micro-computed tomography (CT) imaging of rats implanted with R3230AC mammary carcinoma. ... -
Optical-CT 3D Dosimetry Using Fresnel Lenses with Minimal Refractive-Index Matching Fluid.
(PLoS One, 2016)Telecentric optical computed tomography (optical-CT) is a state-of-the-art method for visualizing and quantifying 3-dimensional dose distributions in radiochromic dosimeters. In this work a prototype telecentric system (DFOS-Duke ... -
Pulmonary blastomycosis presenting as primary lung cancer.
(BMC infectious diseases, 2018-07-18)BACKGROUND:Blastomycosis is an endemic mycosis in North America that is caused by the dimorphic fungus Blastomyces dermatitidis. The illness is a systemic disease with a wide variety of pulmonary and extra-pulmonary ... -
Response.
(Radiology, 2016-02) -
Spectral diffusion: an algorithm for robust material decomposition of spectral CT data.
(Phys Med Biol, 2014-11-07)Clinical successes with dual energy CT, aggressive development of energy discriminating x-ray detectors, and novel, target-specific, nanoparticle contrast agents promise to establish spectral CT as a powerful functional ...
