نتایج جستجو برای: open mri
تعداد نتایج: 496963 فیلتر نتایج به سال:
BACKGROUND MRI might improve diagnosis of breast cancer, reducing rates of reoperation. We assessed the clinical efficacy of contrast-enhanced MRI in women with primary breast cancer. METHODS We undertook an open, parallel group trial in 45 UK centres, with 1623 women aged 18 years or older with biopsy-proven primary breast cancer who were scheduled for wide local excision after triple assess...
OBJECTIVES The aim of this study was to test the hypothesis that real-time magnetic resonance imaging (MRI) would enable closed-chest percutaneous cavopulmonary anastomosis and shunt by facilitating needle guidance along a curvilinear trajectory, around critical structures, and between a superior vena cava "donor" vessel and a pulmonary artery "target." BACKGROUND Children with single-ventric...
OBJECTIVE To evaluate the efficacy and safety of etanercept (ETN) after 48 weeks in patients with early active non-radiographic axial spondyloarthritis (nr-axSpA). METHODS Patients meeting Assessment of SpondyloArthritis international Society (ASAS) classification criteria for axSpA, but not modified New York radiographic criteria, received double-blind ETN 50 mg/week or placebo (PBO) for 12 ...
PURPOSE To describe SequenceTree, an open source, integrated software environment for implementing MRI pulse sequences and, ideally, exporting them to actual MRI scanners. The software is a user-friendly alternative to vendor-supplied pulse sequence design and editing tools and is suited for programmers and nonprogrammers alike. METHODS The integrated user interface was programmed using the Q...
Prostate brachytherapy involves implanting radioactive seeds (I125 for instance) permanently in the gland for the treatment of localized prostate cancers, e.g., cT1c-T2a N0 M0 with good prognostic factors. Treatment planning and seed implanting are most often based on the intensive use of transrectal ultrasound (TRUS) imaging. This is not easy because prostate visualization is difficult in this...
Welcome to this special issue of the Open Neuroimaging Journal which focuses on physiological MRI as reviewed by a panel of leaders in the field. The use of MRI to investigate brain physiology has grown at a very rapid pace. The spatial resolution and spatial specificity of neuronal activiation as detected by fMRI have markedly improved over the past decade. The fMRI signal sources and the hemo...
در این مطالعه شیوع مال اکلوژن anterior open bite(a.o.b) در سنین 12-15 سال مورد بررسی قرار گرفت.
هدف اصلی در این مطالعه بررسی علائم و خصوصیات نکروز ایسکمیک سرفمور در روشهای رادیولوژیک و تعیین اهمیت و نفش آن در تشخیص این بیماری می باشد . نتایج بدست آمده حاکی از آن است که در رادیوگرافی ساده در مراحل اولیه بیماری تعییرات رادیوگرافیک قابل توجهی وجود ندارد و این تغییرات معمولا در مراحل پیشرفته تری از بیماری ظاهر می شود. نتایج حاصله با آنجه در گزارشهای قبلی و آنچه در کتب ماخذ وجود دارد هماهنگی د...
BACKGROUND AND PURPOSE We sought to map early regional ischemia and infarction in patients with middle cerebral artery (MCA) stroke and compare them with final infarct size using advanced MRI techniques. MRI can now delineate very early infarction by diffusion-weighted imaging (DWI) and abnormal tissue perfusion by perfusion-weighted imaging (PWI). METHODS Seventeen patients seen within 12 ho...
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