MR-Venography Using High Resolution True-FISP
نویسندگان
چکیده
منابع مشابه
High-resolution MR venography at 3.0 Tesla.
PURPOSE The aim of this study was to investigate the visualization of small venous vessels in the normal human brain at a field strength of 3 Tesla. METHODS T2*-weighted, three-dimensional gradient-echo images were acquired by exploiting the magnetic susceptibility difference between oxygenated and deoxygenated hemoglobin in the vasculature and microvasculature. The spatial resolution was 0.5...
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Magnetic resonance venography (MRV) has been used to assess the effects of medical treatment for and the resolution of cerebral venous diseases. The contrast mechanism involving MRV used for functional or anatomical applications has been based on the local magnetic field inhomogeneity created by deoxyhemoglobin, which determines MR signal intensity [1,2]. Susceptibility weighted imaging (SWI), ...
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ous abdominal diseases (1, 2), but its use for the evaluation of gastrointestinal disease has been slow to develop because of long acquisition times (resulting in increased motion artifacts, mostly from either respiration or peristalsis) and the unavailability of good MR contrast agents for the gastrointestinal tube (3, 4). As a result, only a small number of published studies have focused on t...
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Introduction Highlighting the lumen of veins while attenuating arterial signal in MRI can be of use for several clinical purposes such as guiding the placement of pacemaker leads [1] or the diagnosis of venous thrombi [2]. At a magnetic field strength of 1.5 T, coronary venography has successfully been implemented with magnetization transfer contrast (MTC) [3] prepulses. Unfortunately this appr...
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High-resolution magnetic resonance venography (HR-MRV) of intracranial subependymal veins using a two-dimensional Fourier-transform time-of-flight technique was performed on normal volunteers and clinical cases of cerebral disease. For the pulse sequence, fast-field-echo sequence was used with the following parameters: TR/TE/flip angle = 34 ms/12 ms/50 deg., 256 x 256 matrix, 1 mm effective sli...
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ژورنال
عنوان ژورنال: RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
سال: 2001
ISSN: 1438-9029,1438-9010
DOI: 10.1055/s-2001-16394