Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Sep 2008
Assessment of fluctuating velocities in disturbed cardiovascular blood flow: in vivo feasibility of generalized phase-contrast MRI.
To evaluate the feasibility of generalized phase-contrast magnetic resonance imaging (PC-MRI) for the noninvasive assessment of fluctuating velocities in cardiovascular blood flow. ⋯ PC-MRI IVSD mapping is able to detect flow abnormalities in a variety of human cardiovascular conditions and shows promise for the quantitative assessment of turbulence. This approach may assist in clarifying the role of disturbed hemodynamics in cardiovascular diseases.
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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 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
Comparative StudyNavigator-triggered prospective acquisition correction (PACE) technique vs. conventional respiratory-triggered technique for free-breathing 3D MRCP: an initial prospective comparative study using healthy volunteers.
To confirm the superiority of the navigator-triggered prospective acquisition correction (PACE) technique over the conventional respiratory-triggered (RESP) technique, something that has been perceived experimentally but without definite evidence, for free-breathing three-dimensional (3D) magnetic resonance cholangiopancreatography (MRCP) using healthy volunteers. ⋯ We confirmed the superiority of the image quality of the PACE technique compared to conventional RESP technique for free-breathing 3D MRCP in healthy volunteers.
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J Magn Reson Imaging · Sep 2008
Comparative StudyApparent diffusion coefficient values in peripheral and transition zones of the prostate: comparison between normal and malignant prostatic tissues and correlation with histologic grade.
To investigate the utility of apparent diffusion coefficient (ADC) values for discriminating tumor in patients with prostate cancer from normal prostatic tissues in healthy adult men, and to identify correlations between ADC and histologic grade of prostate cancer. ⋯ ADC values appear to provide acceptable diagnostic accuracy in both PZ and TZ.