Use of magnetic resonance elastography for assessing liver functional reserve: A clinical study

作者：Li, Bin; Min, Jie; Liang, Wei-Ren; Zhang, Guang-Qiang; Wu, Jian-Jun; Jin, Kai; Huang, Wei; Ying, Cai-Yu; Chao, Ming^*

来源：World Journal of Gastroenterology, 2015, 21(24): 7522-7528.

DOI：10.3748/wjg.v21.i24.7522

• Magnetic resonance elastography
• Liver functional reserve
• Indocyanine green clearance test
• Liver fibrosis
• Hepatocellular carcinoma

AIM: To investigate the value of magnetic resonance elastography (MRE) with regard to assessing liver functional reserve. @@@ METHODS: Data from inpatients diagnosed with a liver tumor at an interventional radiology department from July 2013 to June 2014 were analyzed. A 3.0 Tesla magnetic resonance unit was used to scan 32 patients with confirmed diagnoses of hepatocellular carcinoma (HCC); an MRE sequence was added to the protocol, and the data were reconstructed and analyzed by two attending radiologists. Regions of interest were identified in different slices of the non-tumor liver parenchyma to measure average stiffness. In addition, the indocyanine green (ICG) test was performed no more than 1 wk before or after the magnetic resonance examination for all 32 patients; the ICG retention rate at 15 min (ICGR-15) and the ICG plasma clearance rate (ICG-K) were recorded. Correlational analyses were performed between the liver stiffness values and the ICGR-15 as well as between the liver stiffness values and the ICG-K. @@@ RESULTS: Magnetic resonance imaging, including an MRE sequence and the ICG test, was performed successfully in all 32 enrolled patients. None of the patients developed complications. The mean +/- SD of the elasticity values measured by the two attending radiologists were 4.7 +/- 2.2 kPa and 4.7 +/- 2.1 kPa, respectively. The average liver stiffness value of the non-tumor parenchyma measured using MRE in HCC patients was 4.7 +/- 2.2 kPa. The average ICGR-15 was 0.089 +/- 0.077, and the average ICG-K was 0.19 +/- 0.07. We found that the liver stiffness value of the non-tumor parenchyma was significantly and positively related to the ICGR-15 (r = 0.746, P < 0.01) as well as significantly and negatively related to the ICG-K (r = -0.599, P < 0.01). The ICGR-15 was significantly and negatively related to the ICG-K (r = -0.852, P < 0.01). @@@ CONCLUSION: MRE is accurate and non-invasive; furthermore, it can be used to effectively assess the liver functional reserve of HCC patients.

• 出版日期2015-6-28
• 单位浙江大学