Objective:To explore and compare the clinical application value of 8-channel head phased-array coil, an 8-channel temporomandibular joint (TMJ)-specific surface coil, and a single-channel surface coil in TMJ MRI examinations.Methods:A total of 600 temporomandibular disorders (TMD) patients (1 200 joints) who underwent TMJ MRI examination in the First People′s Hospital of Jinzhong from June 2020 to January 2025 were retrospectively screened. Based on inclusion/exclusion criteria, 120 TMD patients (240 joints) with closed-mouth oblique sagittal proton density weighted imaging (OSag PDWI), coronal T2 fat-suppression weighted imaging (OCor fs T2WI) and open-mouth oblique sagittal proton density weighted imaging (OSag PDWI) were included. Patients were divided into groups A, B, and C, with 40 cases in each group. Group A (31female, 9male, median age 24 years old), underwent 8-channel head phased-array coil imaging. Group B (29 female, 11male, median age 23.5 years old) underwent TMJ imaging with an 8-channel surface coil. Group C (29 female, 11male, median age 22.5 years old) underwent single-channel surface coil imaging. There were no significant differences in age, gender, type or disease types among groups ( P>0.05). Six healthy volunteers without TMD (4 female, 2 male, range 19 to 45 years old) underwent imaging with all three coils as self-control. The signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and image quality were compared for five regions of interest (ROI) in both patients and volunteers. Results:Under the same sequence and the same parameters, SNR and CNR in group B were higher than those in group A, and SNR and CNR in group C were also higher than those in group A, the differences were statistically significant ( P<0.05). However, there were significant differences in SNR and CNR between group B and group C in the closed and open positions of ROI1, the open positions of ROI3 and the open positions of ROI5 ( P<0.05), and there were no significant differences in other positions ( P>0.05). Group B had the best image quality, followed by group C and group A had the worst image quality. There were significant differences in the visualization of OSag PDWI in the closed mouth position, OCor T2WI in the coronal position, and OSag PDWI in the open mouth position, such as condyle, anterior attachment, joint disc, double lamina area, joint cavity and lateral pterygoid muscle ( P<0.05). There were significant differences between group B and group C in showing the joint cavity in the closed mouth position and showing the structure of the bilaminar area in the open mouth position ( P<0.05). There was no significant difference in other regions of interest ( P>0.05). The subjective scores of condyle, anterior attachment, articular disc, bilaminar area, articular cavity, lateral pterygos muscle and other structures were medium to high in group A, high in group B, and high or high in group C by two radiologists independently. In the five rois, the 8-channel TMJ surface coil showed more details, especially in the articular disc, condyle and lateral pterygoid muscle regions, and had more advantages in both volunteers and patients. Conclusions:The 8-channel TMJ-specific surface coil provides significantly clearer visualization of critical anatomical details within the ROIs, demonstrating the highest clinical application value and is recommended as the preferred choice.

Objective:To explore and compare the clinical application value of 8-channel head phased-array coil, an 8-channel temporomandibular joint (TMJ)-specific surface coil, and a single-channel surface coil in TMJ MRI examinations.Methods:A total of 600 temporomandibular disorders (TMD) patients (1 200 joints) who underwent TMJ MRI examination in the First People′s Hospital of Jinzhong from June 2020 to January 2025 were retrospectively screened. Based on inclusion/exclusion criteria, 120 TMD patients (240 joints) with closed-mouth oblique sagittal proton density weighted imaging (OSag PDWI), coronal T2 fat-suppression weighted imaging (OCor fs T2WI) and open-mouth oblique sagittal proton density weighted imaging (OSag PDWI) were included. Patients were divided into groups A, B, and C, with 40 cases in each group. Group A (31female, 9male, median age 24 years old), underwent 8-channel head phased-array coil imaging. Group B (29 female, 11male, median age 23.5 years old) underwent TMJ imaging with an 8-channel surface coil. Group C (29 female, 11male, median age 22.5 years old) underwent single-channel surface coil imaging. There were no significant differences in age, gender, type or disease types among groups ( P>0.05). Six healthy volunteers without TMD (4 female, 2 male, range 19 to 45 years old) underwent imaging with all three coils as self-control. The signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and image quality were compared for five regions of interest (ROI) in both patients and volunteers. Results:Under the same sequence and the same parameters, SNR and CNR in group B were higher than those in group A, and SNR and CNR in group C were also higher than those in group A, the differences were statistically significant ( P<0.05). However, there were significant differences in SNR and CNR between group B and group C in the closed and open positions of ROI1, the open positions of ROI3 and the open positions of ROI5 ( P<0.05), and there were no significant differences in other positions ( P>0.05). Group B had the best image quality, followed by group C and group A had the worst image quality. There were significant differences in the visualization of OSag PDWI in the closed mouth position, OCor T2WI in the coronal position, and OSag PDWI in the open mouth position, such as condyle, anterior attachment, joint disc, double lamina area, joint cavity and lateral pterygoid muscle ( P<0.05). There were significant differences between group B and group C in showing the joint cavity in the closed mouth position and showing the structure of the bilaminar area in the open mouth position ( P<0.05). There was no significant difference in other regions of interest ( P>0.05). The subjective scores of condyle, anterior attachment, articular disc, bilaminar area, articular cavity, lateral pterygos muscle and other structures were medium to high in group A, high in group B, and high or high in group C by two radiologists independently. In the five rois, the 8-channel TMJ surface coil showed more details, especially in the articular disc, condyle and lateral pterygoid muscle regions, and had more advantages in both volunteers and patients. Conclusions:The 8-channel TMJ-specific surface coil provides significantly clearer visualization of critical anatomical details within the ROIs, demonstrating the highest clinical application value and is recommended as the preferred choice.

Objective:To investigate the clinicopathological features and prognostic factors of breast cancer patients with low expression of human epidermal growth factor receptor 2 (human epidermal growth factor receptor-2, HER-2).Methods:Retrospective analysis was made on the clinical data of 823 cases of breast cancer with HER-2 non positive treated by surgery in the First Affiliated Hospital of Bengbu Medical College from January 1, 2013 to December 31, 2016. Collect general clinical indicators (age, site of onset, menstrual status, etc.), pathological features (tumor TNM staging, histological grading, pathological type, axillary lymph node status, Ki-67 index, and expression of HER-2, ER, PR), treatment plans (endocrine therapy, radiotherapy, and chemotherapy plans), survival status (pathological diagnosis time, surgery time, recurrence or metastasis time, and death time). To compare the clinicopathological characteristics of HER-2 non positive breast cancer patients with different hormone receptor status, and analyze the influencing factors of DFS and overall survival. Non normally distributed econometric data are represented by M( Q1, Q3), and Wilcoxon rank sum test is used for comparison between the two groups; Count data is represented as an example (%), and χ 2 test is used for inter group comparison; Use Kaplan Meier method to plot survival curves, and analyze the differences in disease-free survival rate and overall survival rate among different subgroups through Log rank test; Use univariate and multivariate Cox proportional risk models to analyze the influencing factors of prognosis. P<0.05 indicates a statistically significant difference. Results:Among 823 HER-2 non positive breast cancer patients, 657 (79.83%) were hormone receptor positive and 166 (20.17%) were negative; 287 cases (34.87%) had zero expression of HER-2, and 536 cases (65.13%) had low expression. Compared with the hormone receptor negative group, the hormone receptor positive group had a higher proportion of HER-2 low expression (68.49% (450/657) compared to 51.81% (86/166), χ 2=16.25, P<0.001), and a lower proportion of Ki-67>30% (32.57% (214/657) compared to 72.29% (120/166), χ 2=86.69, P<0.001). In the hormone receptor positive group, compared with the HER-2 zero expression subgroup, the HER-2 low expression subgroup had a lower proportion of patients with onset age ≥ 40 years old ( P=0.026), a higher proportion of premenopausal women ( P=0.045), a later pathological stage ( P=0.042), and a lower positive rate of axillary lymph nodes ( P=0.023). Multivariate analysis showed that primary tumor size stage T3-T4, Ki-67 > 30% and HER-2 zero expression were risk factors for 10-year DFS and total survival of hormone receptor positive HER-2 non positive breast cancer patients (10-year DFS: HR values were 2.840, 2.010, 2.652, 95% CI: 2.265－4.010, 1.563－2.471, 1.983－3.441, all P=0.001; Overall survival: HR values were 1.923, 1.954, 95% CI: 1.332－2.642, 1.774－2.531, with P values of 0.041 and 0.012, respectively; Primary tumor size stage T3-T4 and HER-2 zero expression are risk factors for 10-year DFS in hormone receptor negative HER-2 non positive breast cancer patients ( HR values are 2.096 1.885, 95% CI: 1.687－3.000, 1.452－2.774, P values are 0.026 and 0.005, respectively). Regional lymph node stage N1-N3 is a risk factor for 10-year overall survival ( HR=1.982, 95% CI: 1.230－2.710, P=0.001). Conclusions:Low HER2 expression in HR Positive patients with breast cancer is more common than in TNBC.There is heterogeneity between the clinicopathological features of patients with zero expression of HER-2 and low expression of HER-2. The survival prognosis of patients with breast cancer with low expression of HER-2 is better than that of patients with zero expression of HER-2, and the expression of HER2 has a significant effect on survival and prognosis.

Adult ; Aged ; Algorithms ; Endometrial Neoplasms ; metabolism ; mortality ; surgery ; Female ; Humans ; Middle Aged ; Receptors, Estrogen ; metabolism ; Sarcoma, Endometrial Stromal ; metabolism ; mortality ; surgery ; Treatment Outcome

Background:Permanent polymer drug eluting stents (PP-DES) may induce inflammation of the vessel wall due to the existence of the polymer,which may delay intimal healing.Polymer-free DES (PF-DES) that eliminate the polymeric carrier may potentially lead to safer DES.However,the safety and efficacy of PF-DES remains controversial.Methods:Randomized controlled trials comparing PF-DES with PP-DES were searched in online database including MEDLINE,Excerpta Medica Database (EMBASE) and Cochrane Library.Studies reporting late lumen loss (LLL),all-cause death,myocardial infarction (MI),target lesion revascularization (TLR) and late stent thrombosis (LST) were enrolled and quantitatively analyzed.Results:Ten studies enrolling 6575 patients were included in this meta-analysis.The PF-DES showed a benefit in reducing all-cause death (OR =0.77,95％ CI:0.61 to 0.98,P =0.03) and long-term LLL (weighted mean difference (WMD)-0.16 mm,95％ CI:-0.22 to -0.11 mm,P ＜ 0.001),while no superiority was found in reducing short-term LLL (WMD 0.03 mm,95％ CI:-0.07-0.13 mm,P =0.57),MI (OR =1.12,95％ CI:0.19 to 23.18,P=0.39),TLR (OR =1.19,95％ CI:0.42 to 3.38,P=0.83)and LST (OR =0.92,95％CI:0.05 to 5.71,P =0.74).Conclusion:PF-DES showed benefits in reducing long-term LLL and mortality compared with PP-DES,but no superiority was found in short-term LLL,MI,TLR and LST.These findings provide a sound basis for the wide application of PF-DES in the future.

Background:Permanent polymer drug eluting stents (PP-DES) may induce inflammation of the vessel wall due to the existence of the polymer,which may delay intimal healing.Polymer-free DES (PF-DES) that eliminate the polymeric carrier may potentially lead to safer DES.However,the safety and efficacy of PF-DES remains controversial.Methods:Randomized controlled trials comparing PF-DES with PP-DES were searched in online database including MEDLINE,Excerpta Medica Database (EMBASE) and Cochrane Library.Studies reporting late lumen loss (LLL),all-cause death,myocardial infarction (MI),target lesion revascularization (TLR) and late stent thrombosis (LST) were enrolled and quantitatively analyzed.Results:Ten studies enrolling 6575 patients were included in this meta-analysis.The PF-DES showed a benefit in reducing all-cause death (OR =0.77,95％ CI:0.61 to 0.98,P =0.03) and long-term LLL (weighted mean difference (WMD)-0.16 mm,95％ CI:-0.22 to -0.11 mm,P ＜ 0.001),while no superiority was found in reducing short-term LLL (WMD 0.03 mm,95％ CI:-0.07-0.13 mm,P =0.57),MI (OR =1.12,95％ CI:0.19 to 23.18,P=0.39),TLR (OR =1.19,95％ CI:0.42 to 3.38,P=0.83)and LST (OR =0.92,95％CI:0.05 to 5.71,P =0.74).Conclusion:PF-DES showed benefits in reducing long-term LLL and mortality compared with PP-DES,but no superiority was found in short-term LLL,MI,TLR and LST.These findings provide a sound basis for the wide application of PF-DES in the future.

Objective To study the diagnosis and treatment of infected pseudoaneurysms(PA) resulting from drug injection. MethodsThe clinical data of 11 cases of i nfected PA resulting from drug injection were reviewed retrospectively.1 pat ient was treated by non-operation,10 cases were treated by artificial blood ve ssel transplantation after removal of PA and local debridement. Results One case dead. All the 10 cases treated by operation had satisfactory results and none had ischemic symptom of the limbs.Eight grafts were patent d emonstrated by color Dopler ultrasonography 3 months postoperatively. Conclusions The diagnosis of PA induced by drug injection can be m ade by the history of drug injection, pulsate mass of injection site. The eff ective treatment should include control of infection,local debridement,PA res ection and blood vessel implantation .