نتایج جستجو برای: cta
تعداد نتایج: 3697 فیلتر نتایج به سال:
Limitations of CT Angiography in Patient Selection for Thrombolytic Therapy To the Editor: We have read with great interest the article by Wildermuth et al1 on the role of CT angiography (CTA) in patient selection for thrombolytic therapy. The authors report that selection of patients with little potential for benefit from thrombolytic therapy is feasible with the use of CTA. The CTA findings, ...
The Cherenkov Telescope Array (CTA) — an array of many tens of Imaging Atmospheric Cherenkov Telescopes deployed on an unprecedented scale — is the next generation instrument in the field of very high energy gamma-ray astronomy. CTA will operate as an open observatory providing data products to the scientific community. An average data stream of about 10 GB/s for about 1000 hours of observation...
Background: There is controversy regarding the need to use advanced imaging select candidates for thrombectomy in late window acute ischemic stroke (AIS). Hypoattenuation on CT angiography source images (CTA-SI) arterial phase has been shown be more sensitive than Alberta Stroke Program Early score (ASPECTS) of brain parenchyma determine tissue at risk ischemia. Our hypothesis that addition a s...
BACKGROUND The prevalence of heart failure (HF) is rising in industrialized and developing countries. Though invasive coronary angiography (ICA) remains the gold standard for anatomical assessment of coronary artery disease in HF patients, alternatives are being sought. Computed tomographic coronary angiography (CTA) has emerged as an accurate non-invasive diagnostic tool for coronary artery di...
Computed tomography angiography (CTA) of the neck has become the most common modality for diagnosing blunt carotid artery injury (BCAI). The protocol at our institution includes CTA on trauma patients with a seatbelt sign. The purpose of this study is to evaluate whether a solitary seatbelt sign is an indication for CTA of the neck to diagnose BCAI. We conducted a retrospective review of patien...
I n this issue of iJACC, Burris et al. (1) used a statewide registry to compare the diagnostic yield of coronary computed tomography angiography (CTA) with that of triple rule out (TRO) CTA scans and found that although there were slightly higher diagnostic yields for aortic dissection and pulmonary embolisms (PEs) in the TRO CTA group, this came at the cost of a higher dose of radiation and co...
Conditioned taste aversion (CTA) is a phenomenon in which an individual forms an association between a novel tastant and toxin-induced gastrointestinal malaise. Previous studies showed that the parabrachial nucleus (PBN) contains neurons that are necessary for the acquisition of CTA, but the specific neuronal populations involved are unknown. Previously, we identified calcitonin gene-related pe...
Brain-derived neurotrophic factor (BDNF) and its receptor, tropomyosin-related kinase receptor B (TrkB), play a critical role in activity-dependent plasticity processes such as long-term potentiation, learning, and memory. It has been shown that BDNF exerts different or even opposite effects on behavior depending on the neural circuit. However, the detailed role of BDNF in memory process on the...
Cyanuric triazide (CTA), a nitrogen-rich energetic material, was compressed in a diamond anvil cell up to 63.2 GPa. Samples were characterized by x-ray diffraction, Raman, and infrared spectroscopy. A phase transition occurring between 29.8 and 30.7 GPa was found by all three techniques. The bulk modulus and its pressure derivative of the low pressure phase were determined by fitting the 300 K ...
Composite tissue allotransplantation (CTA) is an option recently introduced for major reconstruction of tissue defects. Since announcements of successful hand, larynx, knee, muscle, nerve, abdominal wall and, most recently, partial face transplantation, CTA has become one of the techniques used by plastic and reconstructive surgeons [1]. Clinical success in CTA is the culmination of progress in...
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