[inventory] summary of scientific research progress of radiology in 2020 (7)

< br / > < br / >? < br / > < br / > background < br / >However, about half of the patients still have recurrence after resection, and there is no reliable prognostic method to evaluate the recurrence of resectable early liver cancerThe purpose of this study was to evaluate the value of early HCC recurrence by using the characteristics of radiohistology< br / > < br / > materials and methods < br / >The AFP, liver function and dynamic imaging were followed up every 3 months in the first 2 years and every 6 monthsIn the population of radiographers, the recurrence related radiographer features were extracted from tumor and peripheral featuresThe radiographer features were established by minimum absolute contraction and selection operator regressionThe Cox regression model was used to establish two models, one preoperative and one postoperative variablesThe data of 118 other patients were used to verify the model< br / > < br / > results < br / > < br / > the pre-operative model included the characteristics of Radiology, alpha fetoprotein and the number of tumors; the post-operative model added micro < br / > vessels < br / > involvement and satellite focus on the basis of pre-operative variablesIn the two population data, the two models based on the characteristics of radiology have better prediction efficiency (concordance index ≥ 0.77, P <05 for all), lower integrated Brier score ≤ 0.14, and larger net income compared with the models without the participation of radiologyThe model based on the characteristics of radiology can divide the recurrence risk into three levels: high, medium and low, and has different classification criteria for different quantities< br / > < br / > conclusion < br / >https：//article.do ? Id = 31b01923217a < br / >! < br / > < br / > background < br / > < br / > in patients with cystic fibrosis (CF), T2 weighted high signal structures are associated with inflammatory changes in the lungs and bronchiPathological abnormal regions can be used as imaging markers of the disease < br / > < br / > objective < br / > < br / > the purpose of this study is to evaluate the product of T2 weighted high signal volume and T2 weighted volume intensity of CF patients with black blood T2 weighted sequence < br / > < br / > materials and methods < br / > < br / > this study included healthy volunteers and CF patients All the subjects underwent lung MRI scan, including T2 weighted sequence After the antibiotic < br / > treatment, the patient's condition was aggravated and then MRI was performed again The T2 weighted high signal volume (HSV) automatic quantitative results and T2 weighted VIP results were monitored by two observers Take the average as the final result The results were statistically analyzed to evaluate the median, correlation and repeatability Results in 10 healthy volunteers and 12 CF subjects, T2 weighted HSV was 0%, 4.1% (range 0.1% - 17%), T2 weighted VIP was 0 s and 303 s (range 39-1012 msec), respectively (P < 0.001) In CF patients, T2 weighted HSV or T2 VIP were correlated with forced expiratory volume in one second (P = -0.88 and P = -0.94, perspective; P < 001) T2 HSV and T2 VIP were decreased in 6 patients who were treated with < br / > antibiotics (P = 03) The repeatability between and within groups was good (ICC > 0.99 and > 0.99) Conclusion < br / > < br / > in the patients with cystic fibrosis, the automatic quantitative technique of T2 high signal volume has a good repeatability, which is related to the severity of pulmonary function test, and it will increase when it improves after treatment https：// article.do ? Id = be591923542f < br / > < br / > < br / > objective < br / > < br / > the purpose of this study is to use volume matched CT and polarized helium 3 (3He) MRI to evaluate patients with or without COPD smoking history to establish multi parameter response map (mprm) indicators < br / > < br / > materials and methods < br / > The disease status was evaluated by gold standard Mprm voxel was generated by matching MRI and CT Kruskal Wallis test and Bonferroni test were used to evaluate the difference under different severity, and Spearman coefficient was used to evaluate the correlation < br / > < br / > results < br / > < br / > 175 patients with or without COPD and smoking history were included in this study The proportion of normal mprm voxels in smoking group without COPD was higher (gold I, II, III and IV were 60% vs 37%, 20%, and 7%, respectively, P ＜ 001) The proportion of abnormal voxels was smaller, including bronchiolitis (CT showed normal, 5% vs 6% [no significant difference], 11%, and 19% [P ＜ 001]), mild emphysema (CT showed normal, abnormal ADC: 33% vs 54%, 56%, and 54%; all P ＜ 0.05) .001)。 The normal mprm was positively correlated with FEV1 (r = 0.65, P < 0.001), FEV1 / forced vital capacity ratio (r = 0.81, P < 0.001) and diffusion ability (r = 0.75, P < 0.001), and negatively correlated with poor life therapy (r = -0.48, P < 0.001) The abnormal mprm indexes of bronchiolitis and emphysema were negatively correlated with FEV1 (r = -0.65, - 0.42; P < 001) and diffusion ability (r = -0.53, - 0.60; P < 001), and positively correlated with poor quality of life (r = 0.45, r = 0.33; P < 001) < br / > < br / > conclusion < br / > https：// article.do ? Id = a9a919235935 < br / > objective the purpose of this study is to predict the core signal pathway of IDH wild-type glioblastoma by using the characteristics of diffusion weighted imaging (DTI) and perfusion weighted imaging (PWI) and NGS < br / > < br / > materials and methods < br / > In order to verify the effectiveness of the model for predicting the core signaling pathway, IDH patients with wild-type glioma were evaluated T-test, minimum absolute contraction, selection operator method and random forest method are used to select the characteristics of radiogenomics The area under ROC curve (AUC) combined with radiogenomic characteristics, age, location, RTK, p53 and retinoblastoma 1 pathway were used to evaluate < br / > < br / > results < br / > < br / > 120 patients were included in this study for evaluation 85 patients were in the training group and 35 patients with IDH were in the verification group A total of 71 RTK features, 17 p53 features and 35 channels of neuroblastoma were included in the model In RTK (P = 03), optic neuroblastoma (P = 03) and PWI based p53 channel features (P = 04), the combined model was superior to the results of anatomical imaging The AUC values of RTK, p53 and neuroblastoma were 0.88 (95% CI: 0.74, 1), 0.76 (95% CI: 0.59, 0.92) and 0.81 (95% CI: 0.64, 0.97), respectively < br / > < br / > conclusion < br / > https：// article.do ? Id = b21019250299 < br / >? Background < br / > < br / > < br / > percutaneous microwave ablation (MWA) and laparoscopic partial nephrectomy (LPN) are two suitable treatment methods for early renal cell carcinoma (RCC) with low invasion Objective to compare the long-term results of MWA and LPN in the treatment of ct1a RCC < br / > < br / > materials and methods < br / > The method of propensity matching was used for comparison The final and gray competitive risk model was used to analyze the prognosis of tumor Results there were 185 patients with MWA and 1770 patients with LPN There was no significant difference in local tumor progression (3.2% vs 0.5%, P = 10), tumor specific survival (2.2% vs 3.8%, P = 24), and long-term metastasis (4.3% vs 4.3%, P = 76) between the two groups The overall survival time (hazard ratio, 2.4; 95% confidence interval: 1.0, 5.7; P = 049 vs LPN) and tumor free survival time (82.9% vs 91.4%, P = 003) of patients undergoing percutaneous MWA were worse than those in LPN group Compared with the LNP group, the estimated glomerular filtration rate of MWA patients with percutaneous puncture decreased slightly at discharge (6.2% vs 16.4%), P < 0.001), less bleeding (4.5ml ± 1.3 vs 54.2ml ± 69.2), lower treatment cost ($3150 ± 2970 vs $6045 ± 1860 U.S dollars), shorter operation time (0.5minute ± 0.1 vs 1.8minutes ± 0.6), shorter hospital stay (5.1days ± 2.6 vs 6.9days ± 2.8) (all P < 0.001 vs LPN) The fever rate of MWA group was lower Conclusion there is no significant difference in prognosis and complications between patients with ct1a RCC treated by percutaneous microwave ablation and laparoscopic partial resection Percutaneous microwave ablation has the advantages of less damage to renal function and less blood loss Percutaneous microwave ablation is a good choice for patients who can't accept more invasive laparoscopic partial resection https：// article.do ? Id = eddb192510cb < br / > < br / > radiology: what is the prognosis of acute anterior circulation ischemic brain < br / > Stroke < br /? Background < br / > < br / > in patients with acute ischemic stroke, the function of collateral circulation determines the changes of brain tissue in the blood supply area and affects the treatment results Now it is urgent to evaluate the function of collateral circulation accurately for clinical decision-making of assistant selection in the treatment of acute ischemic stroke < br / > < br / > objective < br / > < br / > the purpose of this study is to verify the value of dynamic contrast-enhanced MR < br / > angiography in predicting acute ischemic stroke < br / > < br / > materials and methods < br / > The collateral circulation (MAC) score of 6-grade Mr acute ischemic stroke was used to evaluate the function of collateral circulation based on the state map of collateral circulation on MR angiography Using multiple logistic regression analysis to analyze age, gender