نتایج جستجو برای: Magnetic resonance imaging (MRI)

تعداد نتایج: 792955  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی و مهندسی 1390

magnetic resonance imaging (mri) is a notable medical imaging technique that makes of phenomenon of nuclear magnetic resonance. because of the resolution and the technology being harmless, mri has considered as the most desirable imaging technique in clinical applications. the visual quality of mri plays an important role in accuracy of medical delineations that can be seriously degraded by exi...

ژورنال: :مجله دانشکده پزشکی دانشگاه علوم پزشکی تهران 0
مهیار غفوری mahyar ghafoori گروه رادیولوژی دانشگاه علوم پزشکی تهران مریم علیزاده maryam alizadeh گروه رادیولوژی دانشگاه علوم پزشکی تهران جلیل کوهپایه زاده jalil kuhpayehzade گروه پزشکی اجتماعی دانشگاه علوم پزشکی تهران

زمینه و هدف: سرطان پروستات سومین علت مرگ و شایع ترین علت سرطان در مردان مسن است. با توجه به توانایی تشخیصی پایین روش های غربالگری در تشخیص و لوکالیزه کردن تومور، روش های تصویربرداری از جمله magnetic resonance imaging (mri) و diffusion weighted imaging (dwi) در سال های اخیر مورد توجه و استقبال قرار گرفته است. در این تحقیق، ارزش استفاده از dwi برای تشخیص سرطان های پروستات بررسی گردید.روش بررسی: ا...

Journal: :iranian journal of radiology 0
zhi-hong shao department of radiology, tongji hospital of tongji university, school of medicine, shanghai, china guo-liang wang department of radiology, tongji hospital of tongji university, school of medicine, shanghai, china xiang-hua yi department of pathology, tongji hospital of tongji university, school of medicine, shanghai, china pei-jun wang department of radiology, tongji hospital of tongji university, school of medicine, shanghai, china; department of radiology, tongji hospital of tongji university, school of medicine, shanghai 200065, china. tel: +86-2166111206, fax: +86-2156952231

intracranial gliosis has no typical clinical signals or imaging characteristics. therefore, it can be easily misdiagnosed as neoplasm. hereby, we report a unique case of gliosis that grew outward from the surface of the brain. mri depicted its signal and enhancement pattern similar to the cerebral gray matter. the diagnosis was confirmed by pathology and immunohistochemistry. although it was di...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1380

چکیده ندارد.

Journal: :مجله دانشکده پزشکی دانشگاه علوم پزشکی تهران 0
عباس تکاور a takavar

basic physical principles of nuclear magnetic resonance imaging (n.m.r.i), a nonionizing medical imaging technique, are described. principles of nmri with other conventional imaging methods, ie, isotope scanning, ultrasonography and radiography have been compared. t1 and t2 and spin density (s.d.) factors and different image construction techniques based on their different combinations is discu...

Journal: :iranian rehabilitation journal 0
farin solimani pediatric neurorehabiliation research center, university of social welfare and rehabilitation sciences, tehran, iran. fereshteh narenji shahid behshti university of medical science, tehran, iran. masoumeh pourmohsen shahid behshti university of medical science, tehran, iran. khoshe khalrghinejad shahid behshti university of medical science, tehran, iran. nahid mehran shahid behshti university of medical science, tehran, iran.

cerebral palsy is the most common chronic motor disorder of childhood, that affecting approximately 3 infants per 1000 live-births. the risk of brain injuries that potentially cause cerebral palsy has amplified with increasing in survival rates for preterm infants. in addition cerebral palsy has a huge economic impact, to immeasurable health, social, and psychological problems that affected chi...

Journal: :international journal of occupational and environment medicine 0
s yilmaz department of oral and maxillofacial radiology, faculty of dentistry, kirikkale university, kirikkale, turkey

[no abstract available]

Journal: :iranian journal of child neurology 0
s.h. hasanpour avanji assistant professor of child neurology, iran university of medical sciences

objective cerebral palsy (cp), a common static motor neurological disorder of childhood with wide spectrum of underlying etiologies, can be demonstrated with different neuro imaging techniques. we undertook this study to investigate the diagnosis of intracranial lesions in children with cp and its correlation between clinical deficits and neuroradiological findings. materials and methods in thi...

Journal: :acta medica iranica 0
susan amirsalari department of pediatrics, baqiyatallah university of medical sciences, tehran, tehran, iran. amin saburi health research center, baqiyatallah university of medical sciences, tehran, tehran, iran. reza hadi health research center, baqiyatallah university of medical sciences, tehran, tehran, iran. mohammad torkaman department of pediatrics, baqiyatallah university of medical sciences, tehran, tehran, iran. fatemeh beiraghdar nephrology & urology research center, baqiyatallah university of medical sciences, tehran, iran. shahla afsharpayman health research center, baqiyatallah university of medical sciences, tehran, tehran, iran.

epilepsy is an important disease with a cumulative incidence of 3% all over the life and more than half of them are started from childhood. in this study we surveyed magnetic resonance imaging (mri) findings in epileptic children and its relation with clinical and demographic findings in order to find better diagnostic and treatment modalities for these children in the future. in this cross sec...

Journal: :medical journal of islamic republic of iran 0
navid mohammadi department of community medicine, qazvin university of medical sciences, preventive medicine and public health research cen-ter, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی قزوین (qazvin university of medical sciences) ferial farahmand department of community medicine, hormozgan university of medical sciences, bandar abbas, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی هرمزگان (hormozgan university of medical sciences) homayoun hadizadeh kharazi department of diagnostic radiology, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) hossein mojdehipanah department of neurology, qazvin university of medical sciences, qazvin, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی قزوین (qazvin university of medical sciences) hossein karampour shahid mohammadi imaging center, hormozgan university of medical sciences, bandar abbas, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی هرمزگان (hormozgan university of medical sciences)سازمان های دیگر: shahid mohammadi imaging center marzieh nojomi department of community medicine, preventive medicine and public health research center, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: preventive medicine and public health research center

background: back pain is a common patients' complaint, and its etiology is important because of different potential treatment approaches (based on causes). for a better diagnosis, magnetic resonance imaging (mri) is widely used in clinical settings that may result in inappropriate requests. this study aims to evaluate the appropriateness of the lumbosacral mri requests in patients with back pai...

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