نتایج جستجو برای: resolution computed tomography
تعداد نتایج: 528036 فیلتر نتایج به سال:
PURPOSE To assess the quality of cone beam computed tomography images obtained by a robotic arm-based and image-guided small animal conformal radiation therapy device. METHOD AND MATERIALS The small animal conformal radiation therapy device is equipped with a 40 to 225 kV X-ray tube mounted on a custom made gantry, a 1024 × 1024 pixels flat panel detector (200 μm resolution), a programmable 6...
conclusion there is still excessive unjustified concern of pte in less trained physicians leading to excessive diagnostic work-up. loyalty to the existing guideline for management of suspected pte in educational hospitals and supervision of attending physicians could prevent overuse of ctpa. results during a 6-month period, 82 patients who underwent ctpa were included. the prevalence of pte was...
background: proper rotation of components in total knee arthroplasty (tka) will largely affect the postoperative outcome. ethnical variation may affect rotational profile. we aimed to evaluate distal femur rotation in iranian population using transepicondylar axes. methods : from a total of 450 knee ct scans and via consecutive sampling, 150 qualified subjects with normal lower extremities al...
the effect of voxel size on the measurement of mandibular thickness in cone-beam computed tomography
background: cone-beam computed tomography (cbct) is a new imaging technology that has been widely used in implantology, oral and maxillofacial surgery and orthodontics. this method provides 3-d images that are composed of voxel, which is the smallest image unit, and determines image resolution. smaller voxel is associated with the higher resolution and also greater radiation exposure. this stud...
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