Magnetic Resonance Characteristics of Tumors

  • E. Edmund Kim


Dynamic magnetic resonance imaging (MRI) with rapid sequential image acquisition after bolus injection of gadolinium-diethylene triaminepentaacetic acid (Gd-DTPA) can be used to differentiate benign from malignant lesions. Approximately 84% of malignant tumors exhibited slope values (the slope of the contrastenhancement-over-time curve) higher than 30% per minute; 72% of benign tumors showed slopes lower than 30% per minute [1]. Both benign and malignant tumors showed some overlap resulting in an accuracy of approximately 80 %. The slope values of the time intensity curve of postcontrast dynamic sequences and peak enhancement rates were calculated during the first minute after contrast administration on a pixel-by-pixel basis using a linear fitting algorithm.


Magnetization Transfer Ratio Dynamic Magnetic Resonance Imaging Magnetization Transfer Contrast Endorectal Magnetic Resonance Imaging Marked Contrast Enhancement 
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© Springer Science+Business Media New York 2001

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  • E. Edmund Kim

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