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J Korean Soc Radiol. 2014 Apr;70(4):269-277. Korean. Original Article. https://doi.org/10.3348/jksr.2014.70.4.269
Jo JM , Shin SS , Kim JW , Heo SH , Jeong YY , Kang HK .
Department of Radiology, Chonnam National University Hwasun Hospital, Hwasun, Korea.
Department of Radiology, Chonnam National University Medical School, Gwangju, Korea. kjradsss@dreamwiz.com
Abstract

PURPOSE: To evaluate the differences in enhancement patterns of liver parenchyma during the late dynamic phase imaging between gadolinium-ethoxybenzyl-diethylenetriamine-pentaacetic acid (Gd-EOB-DTPA) and gadolinium-diethylenetriamine-pentaacetic acid-bismethylamide (Gd-DTPA-BMA). MATERIALS AND METHODS: 130 patients (88 men and 42 women at the mean age of 59.4 years) and 110 patients (72 men and 38 women at the mean age of 60.2 years) underwent dynamic contrast-enhanced MR imaging, using Gd-EOB-DTPA and Gd-DTPA-BMA, respectively, at 3T MR scanner. In both groups, the patients were divided into three categories: category I for normal liver, category II for Child A cirrhotic liver, and category III for Child B and C cirrhotic liver. Late dynamic phase scanning was performed at 100, 140, and 180 seconds after injection of the contrast agent. The injected dose of Gd-EOB-DTPA and Gd-DTPA-BMA was 0.025 mmol/kg of the body weight and 0.1 mmol/kg of the body weight, respectively. Signal intensity ratio of the liver (SIR(L)), contrast ratio between liver and portal vein (LPC), and contrast ratio between liver and spleen (LSC) were calculated and compared between Gd-EOB-DTPA group and Gd-DTPA-BMA group according to the scan delay time. RESULTS: There was no statistically significant difference between the two groups in respect to demographic characteristics. SIR(L) of Gd-EOB-DTPA group was significantly lower at 100 seconds in category I, and also at 100 and 140 seconds in category II (p < 0.05). In Gd-EOB-DTPA group, LPC and LSC showed an increasing trend according to the delayed time in all of the categories. In Gd-DTPA-BMA group, LPC and LSC showed similar values according to the delayed time in all of the categories. LPC of Gd-EOB-DTPA group was significantly higher at 100, 140, and 180 seconds in category I and II (p < 0.05). LSC of Gd-EOB-DTPA group was significantly higher at 100, 140, and 180 seconds in category I, II, and III (p < 0.05). CONCLUSION: In contrast to Gd-DTPA-BMA, the late phase imaging using Gd-EOB-DTPA was affected by intracellular distribution of the contrast agent, which was proportional to the elapsed time after the injection of Gd-EOB-DTPA.

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