1.Diagnostic value of a combined clinical-radiomics model based on MRI for the assessment of renal fibrosis in chronic kidney disease
Chaogang WEI ; Ying ZENG ; Qing MA ; Zhicheng JIN ; Yilin XU ; Ye ZHU ; Xiaojing LI ; Junkang SHEN ; Zhen JIANG
Chinese Journal of Radiology 2025;59(10):1163-1169
Objective:To explore the diagnostic value of a clinical-radiomics model based on the T 1 mapping and apparent diffusion coefficient (ADC)-based radiomics, and the clinical indicator for renal fibrosis (RF) caused by chronic kidney disease (CKD). Methods:This cross-sectional study prospectively and consecutively enrolled 122 patients with CKD at the Second Affiliated Hospital of Soochow University from September 2021 to December 2023 who were randomly allocated to a training set ( n=85) or a validation set ( n=37) in an approximate 7∶3 ratio using simple random sampling. Patients underwent T 1 mapping and diffusion-weighted imaging scans. Renal biopsy was performed within 3 days after the MRI scans. Patients were categorized into three groups based on the degree of RF: no RF ( n=25), mild RF ( n=55), and moderate to severe RF ( n=42). To differentiate the presence of RF (no RF vs. any RF) and the severity of RF (mild RF vs. moderate to severe RF), univariate and multivariate logistic regression were used to optimize the independent clinical predictor, which constituted the clinical model. Radiomics features were extracted from regions of interest delineated within the renal parenchyma of the right kidney on T 1 mapping and ADC maps. Features were selected using least absolute shrinkage and selection operator regression to build the radiomics model. A clinical-radiomics model was subsequently constructed by integrating the independent clinical predictors with the selected radiomics features. Model diagnostic performance was evaluated using the area under the receiver operating characteristic curve (AUC). Calibration curve was plotted to assess model calibration, and decision curve analysis was performed to evaluate clinical net benefit. Results:Univariate logistic regression analysis revealed that estimated glomerular filtration rate (eGFR), serum creatinine, and blood urea nitrogen exhibited statistically significant differences ( P0.05) in distinguishing both the presence and severity of RF. Multivariate analysis identified eGFR as an independent clinical predictor for both the presence of RF ( OR=0.939, 95% CI 0.898-0.982, P=0.006) and RF severity ( OR=0.956, 95% CI 0.917-0.997, P=0.037). From the MRI images, 7 radiomics features were selected to build the radiomics model for distinguishing the presence of RF, and 8 features were selected for the model assessing RF severity. These radiomics models were then combined with eGFR to construct the clinical-radiomics models. The clinical-radiomics models demonstrated the highest diagnostic performance, with an AUC of 0.935 (95% CI 0.859-0.977) for RF presence and 0.967 (95% CI 0.891-0.995) for RF severity in the training set, and 0.914 (95% CI 0.774-0.981) and 0.908 (95% CI 0.748-0.981) in the validation set. Calibration curves and decision curve analysis confirmed that the clinical-radiomics models exhibited excellent calibration and provided the highest clinical net benefit for assessing RF in CKD patients. Conclusion:The clinical-radiomics model integrating T 1 mapping and ADC-based radiomics and eGFR can effectively improve the diagnostic performance for RF in CKD patients.
2.Diagnostic value of a combined clinical-radiomics model based on MRI for the assessment of renal fibrosis in chronic kidney disease
Chaogang WEI ; Ying ZENG ; Qing MA ; Zhicheng JIN ; Yilin XU ; Ye ZHU ; Xiaojing LI ; Junkang SHEN ; Zhen JIANG
Chinese Journal of Radiology 2025;59(10):1163-1169
Objective:To explore the diagnostic value of a clinical-radiomics model based on the T 1 mapping and apparent diffusion coefficient (ADC)-based radiomics, and the clinical indicator for renal fibrosis (RF) caused by chronic kidney disease (CKD). Methods:This cross-sectional study prospectively and consecutively enrolled 122 patients with CKD at the Second Affiliated Hospital of Soochow University from September 2021 to December 2023 who were randomly allocated to a training set ( n=85) or a validation set ( n=37) in an approximate 7∶3 ratio using simple random sampling. Patients underwent T 1 mapping and diffusion-weighted imaging scans. Renal biopsy was performed within 3 days after the MRI scans. Patients were categorized into three groups based on the degree of RF: no RF ( n=25), mild RF ( n=55), and moderate to severe RF ( n=42). To differentiate the presence of RF (no RF vs. any RF) and the severity of RF (mild RF vs. moderate to severe RF), univariate and multivariate logistic regression were used to optimize the independent clinical predictor, which constituted the clinical model. Radiomics features were extracted from regions of interest delineated within the renal parenchyma of the right kidney on T 1 mapping and ADC maps. Features were selected using least absolute shrinkage and selection operator regression to build the radiomics model. A clinical-radiomics model was subsequently constructed by integrating the independent clinical predictors with the selected radiomics features. Model diagnostic performance was evaluated using the area under the receiver operating characteristic curve (AUC). Calibration curve was plotted to assess model calibration, and decision curve analysis was performed to evaluate clinical net benefit. Results:Univariate logistic regression analysis revealed that estimated glomerular filtration rate (eGFR), serum creatinine, and blood urea nitrogen exhibited statistically significant differences ( P0.05) in distinguishing both the presence and severity of RF. Multivariate analysis identified eGFR as an independent clinical predictor for both the presence of RF ( OR=0.939, 95% CI 0.898-0.982, P=0.006) and RF severity ( OR=0.956, 95% CI 0.917-0.997, P=0.037). From the MRI images, 7 radiomics features were selected to build the radiomics model for distinguishing the presence of RF, and 8 features were selected for the model assessing RF severity. These radiomics models were then combined with eGFR to construct the clinical-radiomics models. The clinical-radiomics models demonstrated the highest diagnostic performance, with an AUC of 0.935 (95% CI 0.859-0.977) for RF presence and 0.967 (95% CI 0.891-0.995) for RF severity in the training set, and 0.914 (95% CI 0.774-0.981) and 0.908 (95% CI 0.748-0.981) in the validation set. Calibration curves and decision curve analysis confirmed that the clinical-radiomics models exhibited excellent calibration and provided the highest clinical net benefit for assessing RF in CKD patients. Conclusion:The clinical-radiomics model integrating T 1 mapping and ADC-based radiomics and eGFR can effectively improve the diagnostic performance for RF in CKD patients.
3.Practice of enhanced recovery after surgery reduces postoperative inflammation in patients undergoing laparoscopic gastric cancer surgery
Jingyi WANG ; Jun ZHONG ; Chaogang YANG ; Xiaojiao WANG ; Meng WEI ; Xiaoyan CHEN ; Bilong FENG ; Chunwei PENG
Chinese Journal of General Surgery 2024;39(11):833-838
Objective:To evaluate the application of enhanced recovery after surgery in patients undergoing laparoscopic gastric cancer surgery and its impact on the systemic inflammatory response (SIR).Methods:The clinical data of patients undergoing laparoscopic gastric cancer surgery at the Department of Gastrointestinal Surgery, Zhongnan Hospital, Wuhan University from Mar 2021 to Mar 2023 was retrospectively analyzed.Results:A total of 234 patients with gastric cancer were enrolled (120 cases in ERAS group and 114 cases in routine group). There were no significant differences in preoperative indexes between the two groups (all P>0.05). After laparoscopic surgery, the postoperative ventilation time and hospital stay of patients in ERAS group were significantly shorter than those in the conventional group (all P<0.05). Neutrophil to lymphocyte ratio (NLR) , platelet to lymphocyte ratio (PLR) and systemic immune-inflammatory (SII) index of patients in ERAS group were significantly lower on day 1 and day 3 after surgery than in conventional group (all P<0.05). The ratio of lymphocyte to monocyte (LMR) in ERAS group was significantly higher than that in conventional group on day 1 and day 7 after surgery (all P<0.05). Conclusions:ERAS can improve postoperative SIR indexes in patients undergoing laparoscopic gastric cancer surgery, shorten postoperative recovery time, and enhance the efficacy of laparoscopic gastric cancer surgery by reducing perioperative systemic inflammation.
4.Study on Voice Emotion Recognition of Mandarin-speaking Bimodal Listeners
Yuqi XIA ; Chaogang WEI ; Yuhe LIU
Journal of Audiology and Speech Pathology 2024;32(3):211-215
Objective To investigate the voice emotion perception of bimodal listeners,and to provide refer-ence and suggestions for hearing rehabilitation of cochlear implant(CI)users.Methods A total of 17 Mandarin-speaking postingual deafness bimodal adults as well as 20 normal hearing(NH)adults and 18 adults with unilateral CI participated in the study.All participants received voice emotion recognition test.Results The NH group had significantly higher accuracy scores and shorter reaction times than the bimodal group and the unilateral CI group(P<0.05).There were no significant differences in accuracy between the bimodal group and the unilateral CI group(P>0.05).The reaction time was significantly shorter in the bimodal users than in the unilateral CI users(P<0.05).The bimodal listeners spent less time in female-speaker material than that in male-speaker material(P<0.05).Neutral emotion had the highest accuracy(96.67%)and scared emotion had the lowest accuracy(41.82%).Conclusion A contralateral hearing aid(HA)improves the ability of voice emotion perception for Mandarin-speak-ing bimodal listeners,even though they continue to experience more challenges than NH peers.HA in the nonim-planted ear plays an important role in Mandarin-speaking bimodal listeners'voice emotion perception.
5.The consistency and application value of MRI-based ovarian-adnexal reporting and data system in the diagnosis of ovarian adnexal masses
Tong CHEN ; Xujun QIAN ; Chaogang WEI ; Yueyue ZHANG ; Zhi ZHU ; Peng PAN ; Wenlu ZHAO ; Junkang SHEN
Chinese Journal of Radiology 2023;57(3):282-287
Objective:To explore the consistency of MRI-based ovarian-adnexal report and data system (O-RADS) score and its diagnostic value for ovarian adnexal masses.Methods:The MRI data of 309 patients with ovarian adnexal masses confirmed by pathology were retrospectively collected from January 2017 to August 2021 in the Second Affiliated Hospital of Soochow University, including 327 lesions consisted of 250 benign lesions, 21 borderline lesions, and 56 malignant lesions confirmed by pathology. Borderline and malignant lesions were classified into the malignant group ( n=77) and benign lesions were classified as benign group ( n=250). Two radiologists scored all lesions according to the MRI-based O-RADS, and scored again after 6 months. The proportion of borderline/malignant lesions in each MRI-based O-RADS score was calculated. The weighted Kappa test was used to assess the intra-reader and inter-reader consistency of the image interpretation results. The receiver operating characteristic (ROC) curve analysis was used to evaluate the diagnostic efficacy of MRI-based O-RADS classification for distinguishing benign and malignant ovarian adnexal masses. Results:The weighted Kappa value of the MRI-based O-RADS score between the two radiologists was 0.810 (95%CI 0.764-0.855), and the weighted Kappa values of the two radiologists′ scores at different times were 0.848 (95%CI 0.806-0.889) and 0.875 (95%CI 0.835-0.914), respectively. The borderline/malignant lesions accounted for 0/16, 0.8% (1/127), 10.1% (10/99), 76.0% (57/75), 9/10 and 0/17, 0 (0/122), 8.0% (8/100), 76.2% (48/63), and 84.0% (21/25) of the lesions in the two radiologists based on the MRI O-RADS score of 1, 2, 3, 4, and 5, respectively. When adopting O-RADS score>3 as a cut-off value, the area under the ROC curve of the two radiologists for distinguishing benign and malignant ovarian adnexal masses was 0.928 (95%CI 0.895-0.954) and 0.942 (95%CI 0.911-0.965), respectively. The sensitivity was 0.857 and 0.896, the specificity was 0.924 and 0.924, and the accuracy was 0.908 and 0.917 respectively.Conclusion:The MRI-based O-RADS yields high diagnostic efficiency in the evaluation of benign and malignant ovarian adnexal masses, and the intra-reader and inter-reader consistency of the image interpretation is strong.
6.Clinical research progress of acupuncture and moxibustion and Tuina therapy in the treatment of hemiplegia due to cerebral apoplexy
Chaogang WU ; Zheng WEN ; Wei ZHANG ; Xuyin YANG ; Jingyang LIU
International Journal of Traditional Chinese Medicine 2020;42(6):612-615
This paper reviews the clinical researches on acupuncture and moxibustion and Tuina therapy for hemiplegia, due to cerebral apoplexy. It is found that acupuncture and Tuina therapy mainly includes acupuncture, moxibustion, massage, electroacupuncture, as well as the combination of acupuncture and Chinese medicine, acupuncture and massage therapy or the combination of modern rehabilitation technics. The researches showed that all treatments have good clinical effect and few adverse reactions. However, most of the researches focus on self-control, and lacks comparability. There stilllacks strict RCT and unified standard of operation scheme. Besides, the researches on the mechanism should be strengthened.
7.The value of biparametric MRI in the detection of prostate cancer
Yueyue ZHANG ; Wenlu ZHAO ; Chaogang WEI ; Tong CHEN ; Mengjuan LI ; Shuo YANG ; Shuangxiu TAN ; Beibei HU ; Qi MA ; Yongsheng ZHANG ; Boxin XUE ; Junkang SHEN
Chinese Journal of Radiology 2019;53(2):109-114
Objective To explore the difference in efficacy between multiparametric MRI (Mp-MRI) based on prostate imaging reporting and data system version 2 (PI-RADS v2) and abbreviated biparametric MRI (Bp-MRI) in detecting prostate cancer (PCa) and clinically significant prostate cancer (csPCa), and to evaluate the consistency of image interpretation between different readers. Methods The imaging, pathological and clinical data of patients with prostatic Mp-MRI in our hospital from February 2015 to June 2018 were retrospectively analyzed. At the beginning, 250 patients were randomly selected. Two radiologists visually evaluated the images of those patients using two 5-point scoring schemes based on Mp-MRI and Bp-MRI. The remaining cases were independently proceeded by one of the radiologists using two schemes respectively. Weighted Kappa test was used to assess the consistency of the results interpreted by the two radiologists. The receiver operating characteristic (ROC) curve was used to evaluate the efficiency of the two scoring schemes in detecting PCa and csPCa, and with Z test to investigate whether there was any difference in detection efficiency between the two schemes. Results Nine hundred and seventy eight patients were eventually enrolled in the study. The results of the consistency assessment showed that there was good agreement between the two radiologists, whether using Mp-MRI or Bp-MRI, with the weighted Kappa coefficient of 0.800 and 0.812, respectively. The ROC curve analysis showed that the area under the curve (AUC) of PCa detected by Mp-MRI and Bp-MRI was 0.873 and 0.879, respectively, and the AUC of csPCa detected was 0.922 and 0.932, respectively. In addition, there was no statistically significant difference between the AUC of PCa and csPCa detected by the two schemes (P>0.05). Conclusion The Bp-MRI scoring scheme has good stability in the evaluation of benign and malignant prostate, and its detection efficiency of PCa or csPCa is not lower than that of standard Mp-MRI based on PI-RADS v2.
8. A long term effect on speech recognition in the patients with simultaneous bilateral cochlear implants
Bin WANG ; Chaogang WEI ; Keli CAO ; Xin JIN ; Yi WANG ; Ningyu WANG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2018;53(3):189-195
Objective:
To investigate an effect on speech recognition after bilateral cochlear implants(CI) simultaneously.
Methods:
Nine subjects who underwent bilateral CI operation simultaneously in Peking Union Hospital in 2007 were assigned as bilateral group, another 9 subjects with unilateral CI were chosen as unilateral group according to the age, gender, duration of deafness. Hearing threshold, speech recognition of phrases, disyllabic words, single word in quiet and noise environment were calculated, respectively. Three different sound source positions were set up to simulate the three effects of binaural hearing (head shadow, binaural redundancy and binaural squelch) in noise environment. The speech signal intensity was 70 dBSPL, the signal to noise ratio (SNR) was 0 dB, + 4 dB, + 8 dB, and the speech recognition of phrases were examined in bilateral CI group. All the data was analyzed by SPSS 19.0 software.
Results:
In quiet environment, the average aid-hearing threshold was significantly reduced as (7.2±3.0)dB in bilateral CI group compared to unilateral CI group(
9. Reorganization of central cross-model pattern after auditory deprivation and cortical reconstruction following cochlear implantation
Chaogang WEI ; Yuhe LIU ; Xin JIN
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2018;53(3):232-237
The auditory nervous system has a rapid development period after birth, if there lack enough sensory(auditory) stimulation during this period, there should be a serious and negative impact on the growth and development of auditory center. In the auditory deprivation persist in the critical period, the auditory and visual cortex should be in cross-model reorganization and reorientation of cortical function. Cochlear implantation, especially intervention in the younger age, could excite the auditory cortex, and continuous stimulation to the cerebral cortex can promote the adaptation and reconstruction of auditory function. Speech and language skills can be developed by the synergistic effect of multiple sensory modalities.
10.Correlation between histogram analysis of dynamic contrast enhanced MRI and diffusion weighted imaging intravoxel incoherent motion quantitative parameters and Gleason score of prostate cancer
Ru WEN ; Wenlu ZHAO ; Chaogang WEI ; Jiangfen WU ; Peng CAO ; Yuefan GU ; Mengjuan LI ; Yueyue ZHANG ; Junkang SHEN
Chinese Journal of Radiology 2017;51(5):355-361
Objective To investigate the value and diagnostic efficiency of the quantitative dynamic contrast enhanced-magnetic resonance imaging (DCE-MRI) and intravoxel incoherent motion (IVIM) parameters using three dimention (3D)-histogram analysis for discriminating the Gleason score (GS) of prostate cancer. Methods A total of 53 patients pathologically confirmed as prostate cancer by systemic prostate biopsy who had routine , DCE and DWI-MRI scans were retrospectively analyzed. There were 15 cases for low-risk and 38 cases for intermediate/high-risk prostate cancer. The 3D ROI of all lesions based on T2WI was achieved by image registration to get the quantitative parameters of DCE-MRI and DWI-IVIM. The parameters of DCE-MRI contains: transfer constant (Ktrans), rate constant (Kep) and extracellular-extravascular volume fraction (Ve).The DWI-IVIM related quantitative parameters were ADC, diffusion coefficient (D), diffusion coefficient related to perfusion (D*) and perfusion fraction (f). Then the histogram analysis of these quantitative parameters was performed to get the mean, median, 25th percentile, 75th percentile, Skewness and Kurtosis. Using the Spearman rank correlation analysis to evaluate the correlation of these parameters and GS of prostate cancer. The diagnostic performance of these quantitative histogram parameters related to the GS in identifying low-risk and intermediate/high-risk of prostate cancer was carried by ROC. Results The Kep and Ktrans (mean, median, 25th, 75th) of DCE-MRI were positively correlated with GS (r value was 0.346 to 0.696, P<0.05). The ADC (mean, median, 25th, 75th), D (mean, median, 25th, 75th, Skewness, Kurtosis) and D*(25th) of DWI-IVIM were correlated with GS (r value was-0.544 to 0.428, P<0.05). The DCE-MRI quantitative parameters Kep (25th) had the highest area under curve (AUC, 0.961); The ADC (median) and D (25th) had higher AUC( 0.832, 0.888) in the quantitative parameters of DWI-IVIM, the difference between Kep(25th) and ADC (median) was statistically significant (Z value was 2.212, P value was 0.027). The difference of AUC between Kep (25th) and D (25th), D (25th) and ADC (median) was not statistically significant (Z values were 1.027 and 1.398, P values were 0.162 and 0.304, respectively).Conclusion DCE and IVIM quantitative parameters (Kep, Ktrans, ADC, D) histogram analysis results are correlated with GS, and can be used for distinguishing low-risk from intermediate/high-risk prostate cancer.

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