Journal of Southern Medical University ›› 2006, Vol. 26 ›› Issue (06): 747-749.

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Modification of the method for preparing rabbit liver VX2 tumor model and its MRI findings

QUAN Xian-yue1, XIE Wei1, ZHANG Xue-lin2, SUN Xi-Jie1, ZHU Xing-li1, YAN Zheng1, LIANG Wen1 1Imaging Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; 2Diagnostic Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China   

  1. 南方医科大学珠江医院影像中心; 南方医科大学南方医院影像中心; 南方医科大学珠江医院影像中心 广东广州510282; 广东广州510282; 广东广州510515;
  • Online:2006-06-20 Published:2006-06-20

Abstract: Objective To improve the method for preparing rabbit VX2 liver tumor model and observe the magnetic resonance imaging (MRI) features of the implanted tumors. Methods Sixteen adult New Zealand white rabbits were assigned randomly into 4 equal groups, and VX2 tumor tissues were implanted into the right and left liver lobes with spiral CT guidance. Plain and contrast-enhanced MR scann and pathological analysis were performed in different stages (14, 18, 22 and 26 days) after tumor implantation. Results Tumor implantation was successful in all the rabbits, and 18 to 22 days after tumor implantation, the diameters of the tumor ranged from 1 to 2 cm, which allowed observation and study. In plain MR scans, lower or equivalent tumor signal in comparison with hepatic parenchyma was observed, and contrast-enhanced scans produced obvious enhancement of the tumor edges. At 22 days after tumor implantation, obvious necrosis was observed in the center of the tumor. Conclusion This method of preparing rabbit VX2 liver tumor model with spiral CT guidance is simple and convenient, and the tumors can be observed effectively with dynamic plain and contrast-enhanced MR scans.

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