نتایج جستجو برای: t2 هتلینگ

تعداد نتایج: 30775  

Journal: :international journal of pediatrics 0
mansour zabihzadeh department of medical physics and department of clinical oncology, faculty of medicine, golestan hospital, ahvaz jundishapur university of medical sciences, ahvaz, iran. morteza pishghadam department of medical physics, faculty of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran. kamran kazemi department of electrical and electronics engineering, shiraz university of technology, shiraz, iran. sirous nekooi department of radiology, faculty of medicine, mashhad university of medical sciences, mashhad, iran. mohamad javad tahmasebi birgani department of medical physics, faculty of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran. farrokh seilanian-toosi department of radiology, faculty of medicine, mashhad university of medical sciences, mashhad, iran.

background access to appropriate images of fetal brain can greatly assist to diagnose of probable abnormalities. the aim of this study was to compare the suitability of t2-true fast imaging with steady state free precession (t2-trufi), and t2-half-fourier acquisition single-shot turbo spin-echo (t2- haste( magnetic resonance imaging (mri) to extract the fetal brain using the level set algorithm...

Journal: :Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 2012

Journal: :Diagnostic and Interventional Imaging 2013

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان مرکزی - دانشکده پزشکی اراک 1391

بیماران تالاسمی ماژور به علت تزریقات مکرر خون در معرض اضافه بار آهن در بافت های مختلف بدن به ویژه قلب و کبد هستند و 70 % علت مرگ و میر بیماران تالاسمی ، نارسایی قلبی ناشی از سیدروز میوکارد است . با توجه به شیوع بالای تالاسمی در کشور ، بر آن شدیم تا ارتباط میزان فریتین سرم و t2*mri قلب و کبد را بررسی نماییم تا با داشتن اطلاعات جامع تری از میزان بار آهن بدن بتوانیم به درمان موثرتر و بهبود کیفیت ز...

ژورنال: اندیشه آماری 2013
arbabi, marzieh, Bameni Moghadam, Mohammad ,

T2 control charts are used to monitor a process when more than one quality variable associated with process is being observed. Recent studies have shown that using variable sample size (VSS) schemes result in charts with more statistical power when detecting small to moderate shifts in the process mean vector. This paper presents an economic- statistical design of T2 control charts with variabl...

2010
M. B. Mie L. R. Schad

measurement of oxygenation is of great interest, because tumor oxygenation is an indicator of aggressiveness and affinity to metastazation [1]. Moreover, the chance of success of a radiation therapy or chemo therapy depends on the oxygen partial pressure of the tumorous tissue [2]. That is the reason why hypoxia is a large obstacle to tumor therapy [3]. In this study, a model of static dephasin...

Journal: :Circulation: Cardiovascular Imaging 2011

2012
Arshad Zaman David M Higgins Marc Kouwenhoven Ananth Kidambi John P Greenwood Sven Plein

PURPOSE Intramyocardial hemorrhage and area at risk are both prognostic markers in acute myocardial infarction (AMI). Myocardial T2 and T2 * mapping have been used to detect such tissue changes at 1.5T but these techniques are challenging at 3.0T due to additional susceptibility variation. We studied T2 and T2 * myocardial mapping techniques at 3.0T on a system employing B1 shimming and compare...

Background: Cardiac complications due to iron overload are the most common cause of death in patients with thalassemia major. The aim of this study was to compare iron chelation effects of deferoxamine, deferasirox, and combination of deferoxamine and deferiprone on cardiac and liver iron load measured by T2* MRI. Methods: In this study, 108 patients with thalassemia major aged over 10 years...

2009
M. Carl M. Bydder E. Han G. Bydder

Introduction: Ultrashort echo time (UTE) MRI requires specialized pulse sequences to overcome the short T2 relaxation of the MR signal encountered in tissues such as ligaments, tendon or cortical bone. Imaging short T2 tissues is achieved in UTE by acquiring the Free Induction Decay (FID) of the MR signal as soon after the end of the RF excitation pulse as possible. This is typically accomplish...

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