Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Sep 2008
Double-reference cross-correlation algorithm for separation of the arteries and veins from 3D MRA time series.
To present a novel postprocessing technique for artery/vein separation and background suppression from contrast-enhanced time-resolved magnetic resonance angiography datasets in order to improve the diagnosis of vessel pathologies and arteriovenous fistulas. ⋯ This method can be helpful in the diagnosis of vascular diseases in subjects where bolus dispersion makes it difficult to discriminate between arteries and veins with standard methods (subtraction or correlation analysis).
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J Magn Reson Imaging · Sep 2008
Comparative StudyArterial visualization by contrast-enhanced moving-table MR angiography: crossover comparison of 0.1 and 0.2 mmol/kg doses of meglumine gadopentetate in normal volunteers.
To determine the appropriate dose of contrast medium for moving-table MR angiography (MT-MRA) from the abdominal aorta to the ankle by comparing visualization with different doses of meglumine gadopentetate (Gd-DTPA) administered in crossover fashion to normal volunteers. ⋯ With continuous MT-MRA imaging from the abdomen to the ankle in normal volunteers, better arterial visualization and superior contrast were achieved with 0.2 mmol/kg of Gd-DTPA.
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J Magn Reson Imaging · Sep 2008
Evaluation of locally recurrent pelvic malignancy: performance of T2- and diffusion-weighted MRI with image fusion.
To evaluate the performance of T2- and diffusion-weighted magnetic resonance imaging (MRI) with image fusion for detection of locally recurrent pelvic malignancy. ⋯ For depicting locally recurrent pelvic malignancy, T2-DWI with image fusion outperforms standard T2-weighted FSE and DWI and is comparable to DCE fat-suppressed T1-weighted SPGR.
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J Magn Reson Imaging · Sep 2008
Feasibility of diffusion-weighted imaging in the differentiation of metastatic from nonmetastatic lymph nodes: early experience.
To investigate the feasibility of diffusion-weighted imaging (DWI) in the differentiation of metastatic from nonmetastatic lymph nodes. ⋯ DWI is feasible for differentiating metastatic from nonmetastatic lymph nodes in patients with uterine cervical cancer.
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J Magn Reson Imaging · Sep 2008
Comparative StudyHigh-spatial-resolution three-dimensional MR cholangiography using a high-sampling-efficiency technique (SPACE) at 3T: comparison with the conventional constant flip angle sequence in healthy volunteers.
To evaluate the image quality of high-spatial-resolution three-dimensional magnetic resonance cholangiography (MRC) with a high-sampling-efficiency technique (sampling perfection with application optimized contrasts using different flip angle evolutions [SPACE]) in comparison with a conventional constant flip angle (FA) sequence at 3T. ⋯ High-resolution three-dimensional MRC with SPACE at 3T allows high-quality imaging of the biliary tract, and has the ability to depict nondilated intrahepatic bile ducts (IHBD) in healthy volunteers.