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• Technical Article •
The value of dynamic enhanced MR subtraction in evaluation of tumor activity of hepatocellular carcinoma after interventional surgery
SHI Xianglong  QUAN lin  ZHANG Jing 

Cite this article as: Shi XL, Quan L, Zhang J. The value of dynamic enhanced MR subtraction in evaluation of tumor activity of hepatocellular carcinoma after interventional surgery. Chin J Magn Reson Imaging, 2020, 11(9): 786-789. DOI:10.12015/issn.1674-8034.2020.09.013.


[Abstract] Objective: To explore the clinical value of plain and dynamic contrast-enhanced MRI and subtraction after dynamic contrast-enhanced MRI in judging the active components of hepatocellular carcinoma (HCC) after interventional therapy.Materials and Methods: From January 2018 to June 2019, 60 patients with liver cancer with 102 pathologically confirmed lesions were collected. One month after the interventional surgery, all patients received MRI plain scan, MR dynamic enhancement scan and enhanced subtraction post-treatment. The results of digital subtraction angiography (DSA) were taken as the gold standard, and then the three methods were compared and analyzed.Results: DSA confirmed that there were 45 active lesions and 57 inactive lesions. After plain scan, 30 active lesions were detected, the detection rate was 66.67%.Thirty-eight active lesions were detected after dynamic contrast-enhanced scanning, the detection rate was 84.44%. Forty-four active lesions were detected by dynamic contrast-enhanced subtraction, the detection rate was 97.78%. The sensitivity and specificity of MRI in the diagnosis of HCC after interventional intervention were 66.67% and 79.17% respectively. The sensitivity and specificity of MRI dynamic enhancement in the diagnosis of HCC after interventional intervention were 84.44% and 89.06% respectively. The sensitivity and specificity of dynamic enhanced silhouette in the diagnosis of HCC after interventional intervention were 97.78% and 98.28% respectively.Conclusions: The subtraction after dynamic enhanced MRI scan is helpful for the determination of active components after hepatocellular carcinoma intervention.
[Keywords] magnetic resonance imaging, interventional；subtraction technique；liver neoplasms

SHI Xianglong* Department of Radiology, the Affiliated Hospital of Qingdao University, Qingdao 266003, China

QUAN lin Department of Sport Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266003, China

ZHANG Jing Department of Radiology, the Affiliated Hospital of Qingdao University, Qingdao 266003, China

*Correspondence to: Shi XL, E-mail: qyshixianglong@163.com

Conflicts of interest   None.

Received  2020-01-12
Accepted  2020-05-21
DOI: 10.12015/issn.1674-8034.2020.09.013
Cite this article as: Shi XL, Quan L, Zhang J. The value of dynamic enhanced MR subtraction in evaluation of tumor activity of hepatocellular carcinoma after interventional surgery. Chin J Magn Reson Imaging, 2020, 11(9): 786-789. DOI:10.12015/issn.1674-8034.2020.09.013.

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