Objective To explore the value of MRI radiomics in the differential diagnosis of cerebral alveolar echinococcosis(CAE)and brain metastases(BM).Methods The clinical and imaging data of 30 patients with CAE confirmed by postoperative pathology in the First Affiliated Hospital of Xinjiang Medical University and 38 patients with BM in the Affiliated Hospital of Traditional Chi-nese Medicine of Xinjiang Medical University during the same period were retrospectively analyzed.Preoperative T1-enhanced axial images using 3D Slicer software were used to delineate the volume of interest(VOI)of the lesions,and Python was used to extract 18 radiomics features including the 10th and 90th percentile and median of the lesions.The radiomics parameters of the two groups were compared and statistically analyzed,respectively.The efficacy of each parameter in the differential diagnosis of CAE and BM was explored.Results There was no significant difference in age and body mass index(BMI)between CAE and BM.There was sig-nificantly more males in CAE than that in BM(P<0.001).Previous history of primary tumor and life history in epidemic area were the key to the differential diagnosis of CAE and BM.High correlation features were filtered from 18 radiomics,and statistical differ-ences were found in 7 features such as 90th percentile and entropy(P<0.05).The combined analysis of these seven features had the best diagnostic performance,with area under the curve(AUC)of 0.732,sensitivity of 79.5%,specificity of 61.1%,and accuracy of 72.3%,respectively.Logistic regression analysis showed that kurtosis odds ratio(OR)value was 0.10,95%confidence interval was 0.01,0.83(P<0.05).Conclusion For CAE and BM with very similar conventional imaging findings,clinical history combined with radiomics can provide better differential diagnosis basis.

Objective To explore the value of MRI radiomics in the differential diagnosis of cerebral alveolar echinococcosis(CAE)and brain metastases(BM).Methods The clinical and imaging data of 30 patients with CAE confirmed by postoperative pathology in the First Affiliated Hospital of Xinjiang Medical University and 38 patients with BM in the Affiliated Hospital of Traditional Chi-nese Medicine of Xinjiang Medical University during the same period were retrospectively analyzed.Preoperative T1-enhanced axial images using 3D Slicer software were used to delineate the volume of interest(VOI)of the lesions,and Python was used to extract 18 radiomics features including the 10th and 90th percentile and median of the lesions.The radiomics parameters of the two groups were compared and statistically analyzed,respectively.The efficacy of each parameter in the differential diagnosis of CAE and BM was explored.Results There was no significant difference in age and body mass index(BMI)between CAE and BM.There was sig-nificantly more males in CAE than that in BM(P<0.001).Previous history of primary tumor and life history in epidemic area were the key to the differential diagnosis of CAE and BM.High correlation features were filtered from 18 radiomics,and statistical differ-ences were found in 7 features such as 90th percentile and entropy(P<0.05).The combined analysis of these seven features had the best diagnostic performance,with area under the curve(AUC)of 0.732,sensitivity of 79.5%,specificity of 61.1%,and accuracy of 72.3%,respectively.Logistic regression analysis showed that kurtosis odds ratio(OR)value was 0.10,95%confidence interval was 0.01,0.83(P<0.05).Conclusion For CAE and BM with very similar conventional imaging findings,clinical history combined with radiomics can provide better differential diagnosis basis.

Objective To evaluate the clinical significance of a novel 3D MRI model in determining the precise location of uterine incision and placenta during cesarean section in patients with placenta previa.Methods A prospective study was conducted singleton pregnant women with placenta previa who underwent cesarean delivery were enrolled.All patients underwent routine pelvic MRI examina-tions and were divided into experimental group(40 cases)and control group(31 cases).The MRI data from the experimental group patients were utilized to create 3D models of the uterus and placenta using the open-source software 3D Slicer.General patient infor-mation,surgical records,and Apgar scores of newborns at 1 min and 5 min were collected.Results A total of 71 cases were included.The average surgery time in the experimental group was significantly shorter than that in the control group[(58.6i4.3)min vs(61.4±6.7)min,P=0.036].The experimental group also experienced reduced intraoperative blood loss compared to the control group(median:885.0 mL vs 960.0 mL,P=0.045),as well as shorter hospital stays(median:6.0 d vs 7.0 d,P=0.023).The proportion of newborns with a 1 min Apgar score less than 7 points was significantly lower in the experimental group compared to the control group(12.5％vs 35.5％,P=0.022).However,there was no statistically significant difference in the proportion of new-borns with a 5 min Apgar score less than 7 points between the two groups.Conclusion The utilization of the 3D MRI model in guid-ing cesarean section surgeries can reduce adverse outcomes for pregnant women and improve the 1 min Apgar scores of newborns.