Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Mar 2005
Comparative StudyComparison of tumor blood perfusion assessed by dynamic contrast-enhanced MRI with tumor blood supply assessed by invasive imaging.
To evaluate the potential of Gd-DTPA-based dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) for providing high-resolution tumor blood perfusion images. ⋯ E . F images of xenografted tumors reflect blood perfusion. This implies that E . F may be a useful parameter for improving cancer diagnostics and individualizing cancer treatment. This possibility deserves to be investigated thoroughly in clinical studies.
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J Magn Reson Imaging · Mar 2005
Comparative StudyComparison between three-dimensional volume-selective turbo spin-echo imaging and two-dimensional ultrasound for assessing carotid artery structure and function.
To compare a volume-selective three-dimensional turbo spin echo (TSE) technique with ultrasound (US) for assessing carotid artery wall structure and function. ⋯ There was a good agreement between MRI and the clinically established two-dimensional US method. The MRI method has the advantage of providing increased vessel coverage, which permits one to assess localized abnormalities without assuming vessel uniformity.
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J Magn Reson Imaging · Mar 2005
Comparative StudyMultislice MR first-pass myocardial perfusion imaging: impact of the receiver coil array.
To compare a new 12-element body phased-array coil with a conventional four-element surface receiver coil array to provide increased signal-to-noise ratios (SNRs) for cardiac steady state free precession (SSFP) perfusion imaging. ⋯ The 12-element coil array provides higher SNR, but these improvements come with trade-offs in image homogeneity. Increased SNR translates into higher semiquantitative perfusion values and offers the potential for improved detection of perfusion defects.
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J Magn Reson Imaging · Mar 2005
An automated algorithm for combining multivoxel MRS data acquired with phased-array coils.
To develop a fully automated algorithm for combining multivoxel magnetic resonance spectroscopy (MRS) data acquired with a phased-array coil. ⋯ The method described in this report provides a means for employing phased-array coils in MRS with the same advantages as those found in MRI.
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J Magn Reson Imaging · Mar 2005
Measurement of cervical spinal cord cross-sectional area by MRI using edge detection and partial volume correction.
To detail a procedure to accurately measure upper cervical cord cross-sectional area (CSA), using MRI, by correcting for partial volume averaging (PVA), and to assess the usefulness of the procedure for measuring cervical cord atrophy rates in longitudinal studies. ⋯ Correcting for PVA allows accurate measurement of the upper cervical cord CSA and accurate measurement of a standard phantom to guard against scanner drift in longitudinal studies of cord CSA.