نتایج جستجو برای: computed tomography iterativeimage reconstruction

تعداد نتایج: 377600  

Journal: :iranian journal of radiology 0
shima molaee department of internal medicine, tehran university of medical sciences, tehran, iran hossein ghanaati advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran; department of radiology, tehran university of medical sciences, tehran, iran enayat safavi advanced thoracic research center, tehran university of medical sciences, tehran, iran; advanced thoracic research center, tehran university of medical sciences, tehran, iran. tel: +98-2166939922 morteza foroumandi department of internal medicine, tehran university of medical sciences, tehran, iran soheil peiman department of internal medicine, tehran university of medical sciences, tehran, iran; advanced thoracic research center, tehran university of medical sciences, tehran, iran

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...

Journal: :medical journal of islamic republic of iran 0
mehdi moghtadaei department of orthopedic surgery, rasoul-e-akram hospital, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: rasoul-e-akram hospital javad moghimi department of orthopedic surgery, rasoul-e-akram hospital, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: rasoul-e-akram hospital gholamreza shahhoseini department of orthopedic surgery, rasoul-e-akram hospital, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: rasoul-e-akram hospital

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...

2012
RuiFang Zhang

Iterative Algorithms can obtain good reconstruction image for enough Iterative times in the technique ct image reconstruction. The order method of the Weighted Distance Orthogonal (WDO) is introduced in this paper to accelerate the Iterative reconstruction, which improves greatly the access mode of ART to projection data, based on the crucial effect that the access order of projection date has ...

2007
V. Masilamani Kamala Krithivasan

As the Computed Tomography (CT) requires normally hundreds of projections to reconstruct the image, patients are exposed to more X-ray energy, which may cause side effects such as cancer. Even when the variability of the particles in the object is very less, the Computed Tomography requires many projections for good quality reconstruction. Discrete Tomography makes use of less variability of th...

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