Dynamic gadolinium-enhanced MR imaging of the spleen: normal enhancement patterns and evaluation of splenic lesions.

摘要: The authors studied the ability to improve detection of splenic lesions during suspended respiration with dynamic gadolinium-enhanced T1-weighted spin-echo magnetic resonance (MR) imaging. In first phase study, normal contrast material enhancement patterns were assessed in 10 control patients without lesions. A heterogeneous signal intensity pattern was observed 11 bolus injection gadopentetate dimeglumine, conversion homogeneous 1 minute later. Mean 321% injection, a rapid return toward baseline thereafter. second phase, evaluation 18 detected contrast-enhanced computed tomography revealed that MR pulse sequences significantly improved lesion conspicuity and detectability compared conventional T1-and T2-weighted sequences. Contrast-to-artifact ratio measurements 0.5, 3....