نتایج جستجو برای: Functional magnetic resonance imaging

تعداد نتایج: 1267317  

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

چکیده ندارد.

Journal: :iranian journal of medical physics 0
ali mirzajani optometry department, rehabilitation faculty, tehran university of medical sciences, tehran, iran. medical physics department, tehran university of medical sciences, tehran, iran

introduction as functional magnetic resonance imaging (fmri) is too expensive and time consuming, its frequent implementation is difficult. the aim of this study is to evaluate repeatability of detecting visual cortex activity in fmri. materials and methods in this study, 15 normal volunteers (10 female, 5 male; mean age±sd: 24.7±3.8 years) attended. functional magnetic resonance images were ob...

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...

Journal: :iranian journal of radiology 0
chermaine deepa antony department of biomedical imaging, faculty of medicine, university malaya, kuala lumpur, malaysia; department of biomedical imaging, faculty of medicine, university malaya, 50603, kuala lumpur, malaysia. tel: +60-30379494422, fax: +60-379492030 kartini rahmat department of biomedical imaging, faculty of medicine, university malaya, kuala lumpur, malaysia anushya vijayananthan department of biomedical imaging, faculty of medicine, university malaya, kuala lumpur, malaysia jayalakshmi pailoor department of pathology, university malaya, kuala lumpur, malaysia

rhabdomyosarcoma is a common primary childhood malignancy that rarely metastasizes to the breast. we report a patient with a primary sinonasal rhabdomyosarcoma metastasizing to the breast, with no distant spread. we describe the imaging appearance of rhabdomyosarcoma on magnetic resonance imaging (mri), particularly on diffusion-weighted imaging (dwi) and apparent diffusion coefficient (adc) se...

Journal: :international journal of environmental research 2012
t.h. kim j.k. song g.w. jeong

the purpose of this study was to investigate the brain activation patterns in response to thehuman color preference by using a functional magnetic resonance imaging (fmri). a total of 31 healthyhumans without color blindness were participated in this study. the brain activation was induced by viewingof eight different colors: black, gray, blue, green, earthy yellow, red, yellow and white. the q...

Journal: :iranian journal of radiology 0
ali firat sarp radiology department, ataturk training and research hospital, izmir katip celebi university, izmir, turkey; radiology department, ataturk training and research hospital, izmir katip celebi university, izmir, turkey. fax: +90-2322431530 yeliz pekcevik radiology department, tepecik training and research hospital, izmir, turkey

lipomatosis of the nerve, also known as fibrolipomatous hamartoma, is characterized by the infiltration of the nerve by fibro-fatty tissue. the affected nerve becomes thicker, and it simulates a mass lesion. lipomatosis usually affects the median nerve and lipomatosis of the sciatic nerve is extremely rare. magnetic resonance imaging (mri) is the key to diagnosis, and it is usually pathognomoni...

Journal: :iranian journal of radiology 0
yasmin davoudi department of radiology, imam reza hospital, school of medicine, mashhad university of medical sciences, mashhad, iran mohsen foroughipour department of neurology, ghaem hospital, school of medicine, mashhad university of medical sciences, mashhad, iran reza torabi department of radiology, school of medicine, mashhad university of medical sciences, mashhad, iran parvaneh layegh department of radiology, imam reza hospital, school of medicine, mashhad university of medical sciences, mashhad, iran nassim matin school of medicine, tehran university of medical sciences, tehran, iran ali shoeibi department of neurology, ghaem hospital, school of medicine, mashhad university of medical sciences, mashhad, iran; department of neurology, ghaem hospital, school of medicine, mashhad university of medical sciences, p. o. box: 9197969764, mashhad, iran. tel: +98-9155137344, fax: +98-5138429828

conclusion these data indicate that while ce-mri will depict more positive results, there are cases in which dwi will show a positive result while ce-mri is negative. we suggest that the combination of these two imaging modalities might yield more positive results in diagnosing acute ms attack giving rise to a more accurate diagnosis. results ce-mri yielded positive results for 61 (87%) patient...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده علوم پایه دامغان 1394

در بین انواع نانوذره ها، نانوذره های مغناطیسی (mnps) نظر به کاربرد های بسیاری که در حوزه های مختلفی همچون مایعات مغناطیس (magnetic fluids) کاتالیز (catalysis) ، تصویربرداری رزونانس مغناطیسmagnetic resonance imaging) ) و بازسازی محیط زیست (environmental remediation) دارند توجه پژوهشگران را به خود جلب نموده اند [1]. این نانوذره ها سوپرپارامغناطیس هایی اند که می توانند جذب میدان مغاطیسی شوند اما خ...

Journal: :تحقیقات علوم رفتاری 0
مجید برکتین majid barekatain

aim and background: it has since long been known that there is strong relation between   psychological status and functional gastrointestinal disorders (fgid). however, until recently, the nature of this putative relationship was unclear due to a lack of non-invasive methods to investigate the neurobiological mechanisms underlying this relationship.  functional brain imaging has provided a meth...

Farkhonde Salehi, Farzad Moradi, Saleh Salehi Zahabi, Shahriar Asgari,

In recent years, the development of neuroimaging techniques such as high-resolution magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), positron emission tomography (PET), or single photon emission tomography (SPECT) has promoted the identification of structural and functional characteristics underlying mental disorders to a great extent. In anxiety disorders, recent...

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