Application of DCE-MRI Combined with DWI Scan in the Qualitative Diagnosis of Focal Liver Lesions(diameter≤3cm)
Objective To analyze the application value of dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI)combined with diffusion-weighted imaging(DWI)in the qualitative diagnosis of focal liver lesions(FLLs)(diameter≤3cm).Methods 50 patients with FLLs in the hospital were selected from April 2021 to April 2024.All patients received DCE-MRI examination and DWI examination.Based on the pathological results such as puncture or surgery,the distribution of dynamic enhanced scan curves of different pathological types and the apparent diffusion coefficient(ADC)values under different diffusion sensitivity coefficients(b values)were compared,and the value of DCE-MRI combined with DWI scan in the qualitative diagnosis of FLLs was analyzed.Results Pathological results showed that among 50 patients with FLLs,there were 13 cases of hepatic hemangioma,21 cases of primary liver cancer and 16 cases of liver metastasis.Under different b values,there were significant differences in ADC values among different pathological types(P＜0.05),and the ADC values in hepatic hemangioma group were significantly higher than those in primary liver cancer group and liver metastasis group(P＜0.05).DCE-MRI showed that the curve of hepatic hemangioma group was mainly type Ⅲ(76.92％),the curve of primary liver cancer group was mainly type Ⅰ(66.67％),and the curve of liver metastasis group was mainly type Ⅱ(75.00％).There was a significant difference in the distribution of curve types among the three groups(P＜0.05),and a significant difference was shown in curve type distribution between the hepatic hemangioma group and the other two groups(P＜0.05).Examination results showed that the diagnostic accuracy rates for benign lesions and malignant lesions were highest by DCE-MRI combined with DWI scan[92.31％(12/13)and 97.30％(36/37)],followed by DCE-MRI scan[69.23％(9/13)and 75.68％(28/37)],and the lowest was DWI scan[61.54％(8/13)and 54.05％(20/37)].The sensitivity and accuracy of qualitative diagnosis of FLLs by different examination methods were significantly different(P＜0.05),and the sensitivity and accuracy of DCE-MRI combined with DWI scan were significantly higher than those of DWI or DCE-MRI alone(P＜0.05).Conclusion The application of DCE-MRI combined with DWI scan in the qualitative diagnosis of FLLs(diameter≤3cm)has high sensitivity and accuracy,and it is conducive to clarifying its benign and malignant properties,and providing more accurate guidance for clinical diagnosis and treatment.
万方数据
维普
