Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Aug 2002
Differentiation of clinically benign and malignant breast lesions using diffusion-weighted imaging.
To evaluate the value of diffusion-weighted imaging (DWI) in distinguishing between benign and malignant breast lesions. ⋯ The ADC would be an effective parameter in distinguishing between malignant and benign breast lesions. Further, tumor cellularity has a significant influence on the ADCs obtained in both benign and malignant breast tumors.
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J Magn Reson Imaging · Aug 2002
Study of laser ablation in the in vivo rabbit brain with MR thermometry.
To investigate the peak temperature and thermal dose (T(43)) as tissue damage indicators for thermal therapy. ⋯ Our results suggest that tissue damage in rabbit brain 4 hours after thermal ablation can be predicted reliably from a threshold temperature of approximately 48 degrees C.
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J Magn Reson Imaging · Aug 2002
Radial fast spin-echo method for T2-weighted imaging and T2 mapping of the liver.
To evaluate a multishot radial fast-spin echo (RAD-FSE) method developed to improve the quality of abdominal T2-weighted imaging as well as the characterization of focal liver lesions. ⋯ These results indicate that RAD-FSE produces abdominal images of higher quality than 2DFT-FSE and HASTE. In addition, lesions can be characterized using T2 maps generated from a single RAD-FSE data set.
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J Magn Reson Imaging · Aug 2002
Comparative StudyImaging articular cartilage defects in the ankle joint with 3D fat-suppressed echo planar imaging: comparison with conventional 3D fat-suppressed gradient echo imaging.
To shorten the examination time for articular cartilage imaging, using a recently developed three-dimensional (3D) multishot echo planar imaging (EPI) sequence with fat saturated (FS), compared to a conventional 3D fat-saturated spoiled gradient echo sequence (3D FS GRE). ⋯ We conclude that the 3D FS EPI sequence is comparable to the 3D FS GRE sequence in the detection of cartilage lesions, with the additional advantage of reduction in scan time by a factor of 4.
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J Magn Reson Imaging · Jul 2002
Reproducibility of total cerebral blood flow measurements using phase contrast magnetic resonance imaging.
To evaluate reproducibility of total cerebral blood flow (CBF) measurements with phase contrast magnetic resonance imaging (pcMRI). ⋯ The findings of this study demonstrate that pcMRI is a reliable method to measure total CBF in terms of both accuracy and reproducibility.