دوانیان, فریبا
کارشناس ارشد تصویربرداریپزشکی (MRI)، دانشکده پیراپزشکی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران
[ 1 ] - تعیین دقت تصویربرداری تشدید مغناطیسی دیفیوژن تنسور در درجه‌بندی تومورهای گلیال بر اساس فراکشنال آنیزوتروپی
Background and purpose: The most common primary tumors of the central nervous system are gliomas. The gold standard choice to determine grade of glial tumor is biopsy which is an invasive method. Accurate assessment of tumor grade is important for determination of appropriate treatment strategies. The purpose of this study was to evaluate the role of Diffusion Tensor imaging (as a non-invasive ...
[ 2 ] - Comparison Between Three-Dimensional Diffusion-Weighted PSIF Technique and Routine Imaging Sequences in Evaluation of Peripheral Nerves in Healthy People
Introduction: The present study aims to evaluate the Three-Dimensional Diffusion-Weighted reversed fast imaging with steady state free precession (3D DW-PSIF) sequence with respect to imaging of the peripheral nerves; the tibial, medial, and lateral plantar nerves in the lower extremity, ulnar and median nerve in the upper extremity, sciatic nerve, brachial plexus, and lumbosacral plexus, and a...
[ 3 ] - Diffusion Tensor Imaging for Glioma Grading: Analysis of Fiber Density Index
Introduction: The most common primary tumors of brain are gliomas and tumor grading is essential for designing proper treatment strategies. The gold standard choice to determine grade of glial tumor is biopsy which is an invasive method. The purpose of this study was to investigatethe role of fiber density index (FDi) by means of diffusion tensor imaging (DTI) (as a noninvasive method) in glial...
[ 4 ] - Applications of diffusion weighted imaging in detection of radiating pain to lower extremities
Introduction: To examine the hypothesis that diffusion weighted imaging (DWI) in lumbosacral region could reveal sciatic nerve course swelling that lead to lower extremity pain. The aim of present article was to find and evaluate the diffusion weighted coefficients (b-values) for scrutinizing sciatic nerve tract changes in lumbosacral region. Materials and methods: Lumbar area was imaged in 30...
[ 5 ] - کاربرد تصویربرداری دیفیوژن تنسور در بیماران مالتیپل اسکلروزیس
مقدمه: تغییرات پاتولوژیک مرتبط با بیماری مالتیپل اسکلروزیس(MS) در یکنواختی شبکه های عصبی ماده سفید مغز تغییراتی را ایجاد می کند که منجر به ایجاد تغییرات محسوس تر در تصویربرداری تنسور دیفیوژن(DTI) کمیت های مربوطه می شود. افزایش میانگین دیفیوزیویتی(MD) و کاهش فراکشنال آنیزوتروپی(FA) در DTI بیماران مبتلا به MS، می تواند به دلیل تخریب غشاء یا دیگر ساختارهای سلولی باشد. هدف از انجام این مطالعه...
[ 6 ] - Evaluation of Diffusion Anisotropy and Diffusion Shape in Grading of Glial Tumors
Background: The most common primary tumors of brain are gliomas. Grading of tumor is vital for designing proper treatment plans. The gold standard choice to determine the grade of glial tumor is biopsy which is an invasive method.Objective: In this study, we try to investigate the role of fractional anisotropy (diffusion anisotropy) and linear anisotropy ...
[ 7 ] - Clinical Significance of Diffusion Weighted Magnetic Resonance Imaging on Treatment Efficacy in MS Patients With Acute Attacks
Background: Despite the existence of various imaging methods, the accurate diagnosis of many neurodegenerative diseases is still controversial. The use of advanced imaging techniques, such as the diffusion weighted imaging can be help the early detection of MS and evaluation of the treatment efficacy in these patients. Materials and method: 24 MS patients with acute attack and thirty healthy s...
[ 8 ] - Assessment the Changes of Cortical Thickness in Alzheimer’s Disease in MR images using Freesurfer Software
Purpose: In this study, the main goal was to determine the correlation between the thickness of cerebral cortex and the severity of cognitive disorder in Alzheimer's disease Materials and method: Twenty patients diagnosed with Alzheimer’s disease with mean age of 72.95 year(14 women and 6 men) and Ten Cognitively normal (CN) subjects with mean age of 70.50 year( 7 women and 3 men) were include...
[ 9 ] - Assessing the Changes of Cortical Thickness in Alzheimer Disease With MRI Using Freesurfer Software
Introduction: In this study, we intend to determine the correlation between the thickness of the cerebral cortex and the severity of the cognitive disorder in Alzheimer disease (AD). Methods: A total of 20 (14 women and 6 men) patients diagnosed with AD with a Mean age of 72.95 years, and 10 (7 women and 3 men) cognitively normal (CN) subjects with a Mean age of 70.50 years were included in th...
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