The diagnostic value of Doppler Resistive Index in the differential diagnosis of focal liver lesions

Dong, Yi; Wang, Wen-Ping; Ignee, Andre; Zuo, Dan; Qiu, Yi-Jie; Zhang, Qi; Lu, Xiu-Yun; Chen, Sheng; Dietrich, Christoph Frank

doi:10.15557/jou.2023.0010

Abstract

Aim

To investigate the diagnostic value of resistance index (RI) in differentiating focal liver lesions.

Patients and methods

In this retrospective study, a total of 576 patients with histologically confirmed focal liver lesions were included. Each patient underwent B-mode ultrasound examination and color Doppler ultrasound examination. The RI values of different focal liver lesions were recorded and compared.

Results

The mean RI value of benign lesions was significantly lower than that of malignant lesions (0.54 ± 0.10 vs. 0.71 ± 0.12) (p <0.05). In malignant lesions, the RI value of intrahepatic cholangiocarcinoma was significantly lower than that of hepatocellular carcinoma lesions. Furthermore, in hepatocellular carcinoma lesions, the RI of large lesions (group 4: >10 cm) was significantly lower than that of small lesions (group 1: ≤2 cm, group 2: 2–5 cm) (p <0.05). Taken RI of 0.615 as a cutoff value to differentiate malignant and benign lesions, the sensitivity, specificity, positive predictive value and negative predictive value were 82.80%, 81.00%, 81.34% and 82.48%, respectively.

Conclusion

Color Doppler ultrasound examination is a valuable imaging method in detecting blood flow signal within liver lesions. The RI parameter should be helpful in differentiating malignant and benign liver tumors.

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The diagnostic value of Doppler Resistive Index in the differential diagnosis of focal liver lesions

Abstract

Aim

Patients and methods

Results

Conclusion

Paradigm

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