نتایج جستجو برای: mri قلبی

تعداد نتایج: 115796  

Journal: :iranian journal of radiology 0
ryan ka lok lee department of imaging and interventional radiology, prince of wales hospital, chinese university of hong kong, hong kong, china; department of imaging and interventional radiology, prince of wales hospital, chinese university of hong kong, hong kong, china. tel: +852-26321247 edmond yuen hok yuen department of imaging and interventional radiology, prince of wales hospital, chinese university of hong kong, hong kong, china victor james abdullah department of ear, nose and throat, united christian hospital, hong kong, china yolanda yim ping lee department of imaging and interventional radiology, prince of wales hospital, chinese university of hong kong, hong kong, china anil tejbhan ahuja department of imaging and interventional radiology, prince of wales hospital, chinese university of hong kong, hong kong, china

symptomatic laryngeal chondrometaplasia is rare. to the best of our knowledge, there are only few case reports on laryngeal chondrometaplasia. the imaging appearance of this uncommon disease is even more rarely described. there are only two case reports describing its appearances in computed tomography (ct) and magnetic resonance imaging (mri). ultrasound (us) features have not been reported so...

Journal: :iranian journal of radiation research 0
a.r. farajollahi department of medical physics, faculty of medicine, tabriz university of medical sciences, tabriz, iran f. pak department of medical physics and biomedical engineering, faculty of medicine, tehran university of medical sciences, tehran, iran m. horsfield department of cardiovascular sciences, university of leicester, leicester royal infirmary, leicester, uk z. myabi department of radiology, emam reza teaching hospital, tabriz university of medical sciences, tabriz, iran

background: in this study the basic radiation properties of n-isopropylacrylamaide polymer gel dosimeter were determined together with verification of its soft tissue equivalency. materials and methods: the nipam gel was prepared and irradiated approximately 2 h after manufacturing. the magnetic resonance (mr) images were made 24 h after irradiation. the nuclear magnetic resonance (nmr) respons...

Journal: :asian journal of sports medicine 0
yoshikazu shimada jfa medical center, fukushima, japan; :477 nakauchi, toride-shi, ibaraki 300-1543, japan. daisuke shimao jfa medical center, fukushima, japan; department of radiological sciences, ibaraki prefectural university of health sciences, ibaraki, japan jiro kobayashi jfa medical center, fukushima, japan chikako nakahori jfa medical center, fukushima, japan mariko shimada jfa academy fukushima, fukushima, japan hiroo fujimoto jfa academy fukushima, fukushima, japan

purpose t1wi (t1 weighted image) was acquired in order to grade bone fusion following the studies by fifa (federation internationale de football associations). research using images other than t1wi has not been reported. the aim of this study is to evaluate the grade of epiphyseal fusion by t2* weighted images (t2*wi) and to investigate new findings on t2*wi as compared with t1wi. methods a tot...

Journal: :Medical physics 1995
J L Prince D Pham O Tan

A method for optimizing MR imaging pulse sequence parameters in a statistical framework is presented. Parameters are defined to be optimal when the resulting scalar images yield optimal image segmentations using Bayesian pixel classification. Thus, Bayes risk is used as the objective function to minimize. Approximations are made to give a tractable solution in a four-step procedure. A sample ca...

2012
Amit Shah

ADAPTIVE SPACE-TIME PROCESSING FOR DIGITAL MOBILE RADIO COMMUNICATION SYSTEMS

Journal: :journal of dental materials and techniques 0
mahrokh mahrokh imanimoghaddam oral and maxillofacial diseases research center, department of oral and maxillofacial radiology, faculty of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) azam sadat azam sadat madani department of prosthodontics, faculty of dentistry and dental research center, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) elahe elahe mahmoudi hashemi department of oral and maxillofacial radiology, faculty of dentistry, north khorasan university of medical sciences, bojnurd, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی خراسان شمالی (khorasan shomali university of medical sciences)

introduction: it has been shown that joint click, an initial and common finding in internal derangement (id), respond to neither conservative treatment nor surgical intervention. this raises the question as to whether it must be treated in the absence of other pertinent signs and symptoms, so the aim of this study was to investigate and compare the mri findings of tmj in both normal subjects an...

Journal: :journal of research in medical sciences 0
vahid shaygannejad isfahan neurosciences research center (inrc) and departement of neurology, medical school, isfahan university of medical sciences (iums), isfahan, iran fereshteh ashtari departement of neurology, medical school, isfahan university of medical sciences (iums), isfahan, iran mohammad zare isfahan neurosciences research center (inrc) and departement of neurology, medical school, isfahan university of medical sciences (iums), isfahan, iran majid ghasemi isfahan neurosciences research center (inrc) and departement of neurology, medical school, isfahan university of medical sciences (iums), isfahan, iran rasul norouzi isfahan neurosciences research center (inrc), isfahan research committee of multiple sclerosis, iran helia maghzi isfahan neurosciences research center and isfahan research committee of multiple sclerosis, iran

normal 0 false false false en-us x-none ar-sa background: to evaluate seizure characteristic among multiple sclerosis patients with coexistent seizure activity compared to control group. materials and methods: this study is a cross-sectional study which was conducted by reviewing the clinical records of patients with definite diagnosis of ms according to mcdonald’s criteria from march 2007 to j...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده فنی 1391

اختلالات مغزی به دو دسته آناتومیکی و فیزیولوژیکی تقسیم می شوند. از آنجائیکه اختلالات مغزی ابتدا به صورت یک عارضه فیزیولوژیکی ظاهر می شوندو در نهایت دارای آثار آناتومیکی می شوند، مطالعه فیزیولوژی و آناتومی مغز در کنار یکدیگر لازم و ضروری است. تصاویر mri و ct قدرت تفکیک مکانی بهتری داشته و حاوی اطلاعات آناتومیکی هستند و تصاویر spect و pet دارای اطلاعات فیزیولوژیکی هستند. اگر بتوان این دو ویژگی را...

عبدی , روح اله, مجیدی , هادی,

Background and purpose: Ultra sonography is the method of choice in pre-natal diagnosis of fetal anomalies however, sonography has limitations in oligohydramnios, maternal obesity and complex fetal anomalies. MRI, is a method with high contrast resolution, large FOV for fetus, placenta and uterine, along with multiplanar images. The aim of our study is to compare the sonographic and MRI findi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده برق و کامپیوتر 1391

بیماری ام اس یک بیماری رایج در اعصاب مرکزی بوده (مغز و نخاع) که در اثر تخریب غلاف میلین، سبب ایجاد لکه های سفید یا پلاک های متعددی در مغز فرد می گردد. شیوع روز افزون بیماری ام اس از یک سو و تشخیص به موقع آن از سویی دیگر، لزوم به تصویربرداری دقیق را برای شناسایی ام اس بیان می کند. از میان روش های تصویربرداری موجود mri به دلیل حساسیت بالا، عدم استفاده از پرتو یونیزه، غیر تهاجمی بودن، یک روش موثر ...

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