The application value of whole-lesion method measuring hepatic abscess lesions in ADC map:a pilot study / 实用放射学杂志

ABSTRACT

Objective To explore the value of whole-lesion method measuring hepatic abscess lesions in ADC map.Methods 13 cases with hepatic abscess were measured by using three methods,drawing the outline of the lesion by manual operation,and placing the round ROI in the central area and the peripheral area in ADC map,respectively.The differences of the ADC values measured by the three methods were compared.The Friedman test was used for the mean of ADC values.The value differences of the groups were compared by the Bonferroni test.Results Among the 17 lesions,6 lesions located in the anterior segment of right lobe of liver,7 lesions in the posterior segment of right lobe of liver,1 lesion in the caudate lobe,1 lesion in the junction zone between the anterior segment of right lobe and the medial segment of left lobe,1 lesion in the medial segment of left lobe and 1 lesion in the lateral segment of left lobe of liver.The mean values from the three methods(×10-3 mm2/s) and the 95％ confidence intervalwere1.27±0.33,1.23± 0.84,1.29±0.44 and (1.21,1.34),(1.06,1.40),(1.20,1.38),respectively.The results of the Friedman test were x2=2.176,P=0.337,and there was no statistical significance between the differences.There were also no statistical significance by the Bonferroni test (P values ＞0.05/3=0.017).The 95 ％ confidence interval of the whole-lesion method was the narrowest,and the accuracy was the highest.The 95％ confidence interval of the central method was the widest,and the accuracy was the lowest.Conclusion The whole-lesion measurement may be used as an analytical method for hepatic abscess in ADC map.