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- W2060371570 abstract "The purpose of this study was to determine the diagnostic value of the superparamagnetic iron oxide NSR 0430 for the detection of focal liver lesions in the presence of advanced cirrhosis. Cirrhosis and growth of cholangiofibromas were induced in 22 rats by administration of thioacetamide. Sixteen non-cirrhotic animals served as controls. T1 and T2 relaxation times of liver and tumor tissue of 12 animals were measured spectroscopically. In 10 animals in vivo MRI was performed before and 1 hour after contrast administration, and then the tumor-to-liver contrast-to-noise ratio (CNR) was calculated. All specimens were evaluated histologically. After contrast administration, T1 and T2 values of liver tissue showed a significant decrease of 18% (P = 0.01) and 31% (P = 0.009), respectively, whereas relaxation times of tumor tissue did not change. On precontrast turbo spin-echo images, 40 tumors could be identified; after contrast administration, 95 lesions were visible. CNR increased significantly after contrast administration by 297% at a TE of 50 msec and by 254% at a TE of 90 msec. In conclusion, our in vitro and in vivo results demonstrate that administration of NSR 0430 substantially improves liver-to-tumor CNR and lesion detection on T2-weighted magnetic resonance images even in the presence of severe cirrhosis. J. Magn. Reson. Imaging 1999;9:251–256. © 1999 Wiley-Liss, Inc." @default.
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- W2060371570 date "1999-02-01" @default.
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- W2060371570 title "Enhanced tumor detection in the presence of liver cirrhosis: Experimental study on the diagnostic value of a superparamagnetic iron oxide MR imaging contrast agent (NSR 0430)" @default.
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- W2060371570 doi "https://doi.org/10.1002/(sici)1522-2586(199902)9:2<251::aid-jmri15>3.0.co;2-t" @default.
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