Objective:To evaluate the cardiac morphological and functional parameters of patients with persistent atrial fibrillation (per-AF) and paroxysmal atrial fibrillation (PAF) using two-dimensional speckle tracking echocardiography (2D-STE) and real-time three-dimensional echocardiography (RT-3DE), and to explore their predictive value for the occurrence and progression of atrial fibrillation.Methods:A retrospective study was conducted on 30 per-AF patients (per-AF group), 30 PAF patients (PAF group) and 25 non-AF subjects (control group) who underwent echocardiography at Wuhan University People′s Hospital from May 2022 to May 2023. The left/right atrial longitudinal strain of reservoir, conduct and contraction (LASr/RASr, LAScd/RAScd, LASct/RASct), and calculated left atrial stiffness (LASI) were assessed by 2D-STE. Three-dimensional left and right atrial maximum volume index (LAVImax/RAVImax), minimum volume index (LAVImin/RAVImin) and emptying fraction (LAEF/RAEF) were obtained by RT-3DE. Then, patients with atrial fibrillation were divided into the normal LAVI group and enlarged LAVI group, and the differences of atrial strain among each group were compared. ROC curve was used to evaluate the overall diagnostic efficiency and cutoff values of ultrasonic parameters in patients with normal volume of atrial fibrillation. Finally, a multivariate Logistic regression model was established to identify the ultrasonic parameters associated with the occurrence and progression of different types of atrial fibrillation.Results:①Structurally, LAD, RAD and RAVImin in control, PAF and per-AF groups increased gradually, while LAEF and RAEF decreased gradually (all P<0.05). ②In terms of strain, LASr in control, PAF and per-AF groups decreased gradually (all P<0.05); Compared with the control group, LAScd, RASr and RAScd in PAF and per-AF groups were significantly decreased, and LASct and RASct in PAF group were significantly decreased (all P<0.05). ③Compared with the normal LAVI group, the LASr, LAScd and LASct in the enlarged LAVI group were significantly decreased, while LASI was significantly increased (all P<0.05); Compared with control group, the left and right atrial strain parameters in LAVI normal group were decreased, and LASI was increased (all P<0.05). The atrial strain parameter ROC was constructed in all subjects with normal left atrial volume, and RASr was the most sensitive indicator.④Multi-factor Logistic regression analysis showed that LAVImin and RASr were the influence factors of PAF ( OR=1.521, 0.907; 95% CI=1.173-1.972, 0.825-0.998; P=0.002, 0.044), LASr was the influence factor of pre-AF ( OR=0.858, 95% CI=0.802-0.917, P<0.001). Conclusions:2D-STE and RT-3DE can be used to evaluate the structural and functional changes of both atria, especially LAVImin, LASr and RASr, which have certain predictive value for the occurrence and progression of atrial fibrillation.

Objective:To quantitatively evaluate and compare the morphology and dynamics parameters of mitral valve devices in patients with atrial functional mitral regurgitation (AFMR) and ventricular functional mitral regurgitation (VFMR) by real-time three-dimensional ultrasound, in order to provide theoretical basis for diagnosis and clinical treatments of the two types of regurgitation patients.Methods:A retrospective study was conducted on 20 AFMR patients (AFMR group) and 20 VFMR patients (VFMR group) who underwent transesophageal echocardiography at Wuhan University People′s Hospital from May to November 2022. Additionally, 20 patients who underwent transesophageal echocardiography at our hospital during the same period due to patent foramen ovale or non cardiac surgery monitoring were selected as the control group. All subjects were measured mitral annulus anteroposterior diameter (AP diameter), anterolateral posteromedial diameter (ALPM diameter), anteroposterior diameter/anterolateral posteromedial diameter (AP/ALPM), commissural width (CW), annular area (AA), annular circumference (AC), annular height (AH), coaptation depth (CD), tenting volume (TV), non-planar angle (NPA) and posterior leaflet angle at isovolumic relaxation time, early diastole, mid diastole, late diastole, isovolumic contraction time, early systole, mid systole, and late systole. The total change rate and systolic change rate of the above parameters were calculated, the differences in structure and dynamic changes of the mitral valve device among three groups were compared, and the correlations between the change rate of mitral annular parameters and left ventricular long axis strain (GLS) were analyzed.Results:①The GLS of three groups were as follows: control group>AFMR group>VFMR group, and the differences between the groups were statistically significant (all P<0.05). ②Static structure: The AP diameter, ALPM diameter, AA, AC, and total leaflet area (TLA) of the AFMR group and VFMR group were significantly larger than those of the control group (all P<0.05), but there was no statistically significant difference between the AFMR group and VFMR group (all P>0.05). Compared with the other two groups, the TV, CD, and posterior leaflet angle of the VFMR group were significantly increased, exhibiting the mitral valve tethering; the control group had the largest AH/CW and the deepest saddle shape; the AFMR group had the smallest TLA/AA and the least mitral valve remodeling; there was no statistically significant difference in the junction area among the three groups (all P>0.05). ③Dynamic changes: AP diameter, ALPM diameter, AA and AC in the control group showed regular changes throughout the cardiac cycle, gradually decreased from isovolumic relaxation time to late diastole, and gradually increased from isovolumic contraction time to late systole; The changes in the above parameters in the AFMR and VFMR groups appeared more disordered. In addition, compared with the control group, the total change rate and systolic change rate of AP diameter in the AFMR group were significantly reduced, but the total change rate of ALPM diameter was significantly increased (all P<0.05). ④The total change rate of AA, ALPM diameter and AP diameter were moderately correlated with GLS ( r=0.353, P=0.006; r=-0.304, P=0.018; r=0.300, P=0.020), while the systolic change rate of posterior leaflet angle was weakly correlated with GLS ( r=0.267, P=0.039). Conclusions:There are differences in the morphology and dynamics parameters of mitral valve device in patients with AFMR and VFMR.Different clinical strategies can be used for the two kinds of functional mitral regurgitation.

Objective:To evaluate the feasibility and the application values of quantitative susceptibility mapping (QSM) for the assessment of meniscal injury and in distinguishing meniscus degeneration and tears.Methods:The clinical and imaging data of 70 patients suspected of meniscus injury and scheduled for arthroscopy in Shandong Medical Imaging Research Institute, Cheeloo College of Medicine, Shandong University from November 2019 to June 2020 were analyzed retrospectively. Thirty age-and sex-matched healthy subjects were also examined as controls. All subjects received knee joint QSM and routine MR imaging. According to the results of arthroscopy, the patients was divided into meniscus degeneration and meniscus tear groups, respectively. The conventional MR was evaluated by two radiologists. The meniscus injury area was delineated on the original QSM magnitude images (the central area of the posterior corner of the lateral meniscus was selected in the healthy controls) and mapped to the corresponding QSM maps, and the magnetic susceptibility values were measured. Kruskal-Wallis H test was used to analyze the magnetic sensitivity values of meniscal degeneration, meniscal tear and healthy control groups; and Bonferroni was used to correct the pairwise comparison. ROC curve was established to evaluate the threshold and efficacy of magnetic susceptibility value in the diagnosis of meniscal tear. The results were compared with those of conventional MRI. Results:The magnetic susceptibility values of meniscus of healthy controls, meniscal degeneration and meniscal tear groups were (0.035±0.016)ppm, -0.031(-0.040,-0.005)ppm, and(-0.122±0.115)ppm, respectively, with significant difference found among the three groups (χ2=44.419, P<0.05). The magnetic susceptibility values of meniscus of healthy controls was significantly higher than those of meniscus degeneration patients and meniscus tear patients (χ2=-23.843, -48.253, P<0.05). The magnetic susceptibility values of meniscus of meniscus tear group was significant lower than those of meniscus degeneration group (χ2=-24.410, P<0.05). Taking magnetic susceptibility values of -0.062 5 ppm as threshold, the area under the ROC curve for the diagnosis of meniscal tears was 0.949, with the sensitivity as 87% and the specificity as 100%. The sensitivity and specificity of conventional MRI in the diagnosis of meniscal tears were 86.8% and 87.5%, respectively. Conclusion:QSM can quantitatively evaluate meniscus injury and can be used as an effective supplement method to conventional MRI, which is helpful to improve the diagnosis of meniscus tear.

Objective:To evaluate alterations of periventricular pseudocysts (PVPC) on MRI before and after birth, and to assess the prognosis.Methods:We retrospectively analyzed the data of 67 cases that were diagnosed with PVPC on prenatal MRI, of which 24 cases were lost to follow-up, 2 died after birth. A total of 41 surviving fetuses were included in this prognosis study. The gestational ages in this group were between 23 and 39 weeks, with an average of (33±3) weeks.All the subjects underwent brain MRI examinations and Gesell Developmental Scale (GDS) testing between 0-3 years of age. According to the location of cysts and with or without other intracranial and extracranial malformations (dilated ventricles orcerebella medulla, hypoxic-ischemic encephalopathy, TORCH virus infection, corporal hypoplasia, chromosomal malformations and nodular sclerosis) , the patients were divided into four groups: isolated connatal cysts, connatal cysts with additional findings,isolated subependymal pseudocysts, and subependymal pseudocysts with additional findings.The MR images were independently reviewed by two radiologists blinded to the clinical information. Intraclass correlation efficient (ICC) was used to analyze the consistency between the two reviewers.Chi-square test was used to compare the location of cysts (single/bilateral), the number of cyst cavities (single/multi-chamber), and other abnormalities in the connatal cyst group and subependymal cyst group. The mean anteroposterior diameter and mean height of cysts between the connatal cyst group and subependymal cyst group were compared by independent sample t-test.The ANOVA test was used to compare the differences in GDS outcomes among the groups. Multiple comparisons were conducted using the LSD test. Results:Inter-observer agreements between the two radiologists were good for the collected data (all ICC>0.75). Eleven isolated connatal cysts and 7 connatal cysts with additional findings became smaller or disappeared, and all had good prognosis. Of the 14 isolated subependymal cysts, 12 became smaller or disappeared, 2 had no change in size, and 13 had good prognosis. The subependymal cysts with additional findings group included 9 cases: 6 became smaller or disappeared, only 3 showed no apparent changes, and 7 had an abnormal outcome. Subependymal cysts with additional findings were significantly reduced and patients demonstrated significant differences compared with the those with isolated subependymal cysts in the development quotients (DQ) of adaptability, large movements, fine movements, personal social interaction, and language DQ ( P all<0.05). DQ between patients with isolated connatal cysts and isolated subependymal cysts was comparable ( P all>0.05). When associated with additional findings, connatal cysts and subependymal cysts could induce significant different DQ outcome ( P all<0.05). Conclusions:Isolated PVPC usually become smaller or disappeared and have a benign presentation after birth, whereas patients with subependymal cysts with additional findings usually have a poor prognosis. Connatal cysts usually have a good prognosis.

Objective:To discuss the feasibility of prenatal MRI in evaluating fetal auricle developmental malformation and atresia of external auditory canal.Methods:Fifteen pregnant women (aged from 22 to 40 years old, mean age 31.3±5.2 years old) with fetal external ear developmental malformation suspected by ultrasound underwent MR scanning between November 2017 and May 2019. All of them were singleton. The gestational age ranged from 23 weeks to 35 weeks, with an average of (27.5±3.5) weeks. The sensitivity, specificity and accuracy of MRI and ultrasound in the diagnosis of fetal auricle malformation and atresia of external auditory canal were calculated and compared, using postnatal follow-up as the gold standard. Fisher exact test was used to compare the efficacy of MRI and ultrasound in diagnosing atresia of external auditory canal.Results:A total of 30 fetal external ears were detected in 15 fetuses, without auricle absence. Totally 19 external ears with developmental malformation were confirmed by postnatal follow-up, including 19 ears with auricle malformation and 15 ears with external auditory canal atresia. The accuracy of MRI and ultrasound in the diagnosis of auricle malformation was both 100% (19/19). For the diagnosis of external auditory canal atresia, the sensitivity, specificity and accuracy of MRI and ultrasound were 93.3% (14/15), 75.0% (3/4), 89.5% (17/19) and 33.3% (5/15), 25.0% (1/4), 31.6% (6/19), respectively. The sensitivity and accuracy of MRI in the diagnosis of atresia of external auditory canal were significantly higher than those of ultrasound, with statistically significant difference ( P=0.004, 0.001). Conclusion:MRI plays an important role in the diagnosis of fetal external ear developmental malformation, which can be used as an effective supplement to ultrasound, especially for the diagnosis of external auditory atresia.

To evaluate the right ventricular systolic function in uremia patients and the effects of maintenance hemodialysis on right ventricular systolic function by volume and strain parameters obtained by 4D RV Volume . Methods Seventy‐six patients with uremia and twenty‐two controls were selected . According to left ventricular ejection fraction ( LVEF) ,uremia patients were divided into normal LVEF uremia group and decreased LVEF uremia group . T hen normal LVEF uremia group was divided into maintenance hemodialysis group and non‐dialysis group . Conventional ultrasound parameters included :LVEF ,pulmonary artery systolic pressure ( PASP) and tricuspid annular plane systolic excursion ( T APSE‐2D) . 4D RV Volume parameters included : right ventricular end‐diastolic volume ( RVEDV ) , tricuspid annular plane systolic excursion ( T APSE‐4D ) ,right ventricular area change rate ( FAC ) ,right ventricular ejection fraction ( RVEF) and right ventricular free wall longitudinal systolic strain ( RV‐GLSfree ) . Results①Compared with the control group ,T APSE‐2D decreased significantly in the decreased LVEF uremia group ( P ＜0 .05) ,w hile there was no significant difference of T APSE‐2D in normal LVEF uremia group ( P ＞ 0 .05) . Compared with the control group and normal LVEF uremia group ,PASP increased significantly in the decreased LVEF uremia group ( P ＜ 0 .05 ) . Compared with the control group ,RVEDV increased significantly both in the normal LVEF and decreased LVEF uremia group ,w hich showed an increasing trend in these three groups ( P ＜0 .05) ,while T APSE‐4D ,FAC ,RVEF and RV‐GLSfree all decreased significantly and showed a decreasing trend in these three groups ( P ＜ 0 .05 ) . ② Compared with the control group , T APSE‐2D decreased significantly in non‐dialysis group ( P ＜0 .05) ,but there was no significant difference in uremia hemodialysis group ( P ＞0 .05) . Compared with the control group ,PASP and RVEDV increased and T APSE‐4D ,FAC ,RVEF and RV‐GLSfree decreased significantly in uremia hemodialysis group and non‐dialysis group ( P ＜ 0 .05 ) . Compared with non‐dialysis group , T APSE‐2D and T APSE‐4D increased significantly in hemodialysis group ( P ＜0 .05) ,while there was no significant difference in RVEDV ,FAC , RVEF and RV‐GLSfree in uremia hemodialysis group ( P ＞0 .05) . Conclusions 4D RV Volume could early and accurately evaluate the right ventricular systolic dysfunction in uremia patients . Furthermore ,w hen evaluating right ventricular systolic function in uremia patients treated with maintenance hemodialysis , indices such as right ventricular strain and volume parameters should be comprehensively considered .

Objective To discuss the correlation between gastrointestinal symptoms concomitant with chronic migraine and sleep disorders,anxiety and depression.Methods Self-rating Anxiety Scale (SAS),Self-rating Depression Scale (SDS),Pittsburgh Sleep Quality Index (PSQI) and Gastrointestinal Symptom Rating Scale (GSRS) were adopted to conduct comparative analysis on gastrointestinal symptoms,anxiety,depression,sleep disorders,and related risk factors in 151 chronic migraine patients who conformed to International Headache Society International Classification of Headache Diseases-Ⅱ diagnostic code and 151 healthy controls in the Third Affiliated Hospital of Qiqihar Medical University from January 2015 to December 2017.Results PSQI scores (8.46±2.54 vs 4.53±1.95,t=2.913,P＜0.05),SAS scores (53.24± 11.66 vs 39.58±8.63,t=3.112,P＜0.05),SDS scores (51.09±8.80 vs 36.11±5.74,t=3.520,P＜0.05),and GSRS scores (4.53 (3.74,5.32) vs 1.29 (0.73,1.31),Z=30.804,P＜0.05) were all higher in migraine patients than that in healthy controls,and the differences were all statistically significant.In chronic migraine patients,139 (92.05％) had one gastrointestinal symptom at least,and the overall incidence of each gastrointestinal symptom was abdominal distension (60 cases,39.74％),exhaust increase (51 cases,33.77％),and endless defecation (43 cases,28.48％),etc.,in turn.Multiple regression analysis showed that headache degree,frequency,PSQI scores,SAS scores,and SDS scores were the main risk factors of gastrointestinal symptoms concomitant with chronic migraine.GSRS scores of chronic migraine patients presented positive correlation with PSQI scores (r=0.65,P=0.000),SAS scores (r=0.42,P=0.000),and SDS scores (r=0.48,P=0.000),respectively.Conclusion Chronic migraine patients are easy to be accompanied with gastrointestinal symptoms,and headache degree and frequency,sleep disorders,depression and anxiety are the main risk factors of concomitant gastrointestinal symptoms.

Objective To create an left atrial appendage(LAA) occlusion preoperative simulation system by three dimensional transesophageal echocardiography(3DTEE) and three dimensional printing (3DP),and simulate the process of LAA occlusion including the selection and deployment of devices,leaks around devices and the compression rate of the devices in vitro.Methods Fifteen cases of LAA occlusion in patients with atrial fibrillation were selected in this study. Preoperative and intraoperative TEE was performed to acquire the volume data of LAA.Replicas of LAAs were created by 3DP.Then the simulation system was created by 3DTEE and the models.The models were scanned by 3DTEE to evaluate the accuracy of models,leaks around devices and the compression rate of the devices.The results were compared with intraoperative measurements.Results 3DP models of 15 patients were created based on the 3DTEE data.There was no significant difference in the values of measurements between models and cases in vivo by 3DTEE and there were agreements between these two methods.The compression rate of devices was higher in models than in case(P =0.04).Compression rate in models correlated with that in cases (r =0.949, P < 0.01).Four cases were observed with leaks in 3DP models and 6 cases were observed with leaks intraoperatively,the Kappa value of agreement was 0.706. Conclusions Preoperative exercise and evaluation of LAA occlusion can be acquired by the preoperative simulation system based on 3DTEE and 3DP,which can be an important supplement for preoperative preparation.

Objective To evaluate the predictive value of radiofrequency catheter ablation (RFCA) in patients with atrial fibrillation by measuring the left atrial structure and functional parameters with quantitative echocardiography.Methods One hundred and two patients with atrial fibrillation underwent radiofrequency ablation and 22 healthy cases as control group were enrolled in this study.Early diastolic strain(Se),global diastolic strain(Sg),late diastolic strain (Sa =Sg-Se),early diastolic strain rate (SRe),late diastolic strain rate(SRa),systolic strain rate (SRs) were measured.The standard deviations were calculated by time to peak of strain and strain rate.Left atrial maximum volume (LAVmax) and left atrial minimum volume (LAVmin) were measured.Left atrial stroke volume (LASV) and left atrial ejection fraction (LAEF) were calculated.The regression equation was obtained by binary logistic regression analysis.The individual probabilistic variables generated in the SPSS worksheet were selected to plot the multivariate ROC curve to determine the area undercurve (AUC) and the optimal cutoff point.Results In the group of paroxysmal atrial fibrillation:Sg,Se,Em decreased and TPSR-SD,TPSRs-SD increased significantly (P ＜0.05) in the relapsed patients;The logistic regression equation was P =1/[1 + e-(3.994+0.22×Se+0.115×Sg+0.04×TPSReSD-0.354×Em+0.02×TPSRsSD)].With P≥0.202 as thecut-off,the sensitivity and specificity of recurrence were the highest,88.9％ and 89.4％ respectively.In the group of persistent atrial fibrillation:the SRs,LAEF and LASV decreased and E/Em increased (P ＜0.05) in the relapsed patients.The logistic regression equation was P =1/[1 + e-(1.139-0.102LASV +0.348×E/Em-3.266×LAEF 0.417×SRs)].With P≥ 0.502 as thecut off,the sensitivity and specificity of recurrence were the highest,77.3％ and 79.2％ respectively.Conclusions Left atrial ultrasound quantitative analysis techniques to atrial fibrillation ablation recurrence have good predictive value.The recurrence of paroxysmal atrial fibrillation can be predicted by the strain rate and the standard deviation of time to peak of strain rate,and the persistent atrial fibrillation by LASV,LAEFand SRs.The multivariate analysis shows a higher predictive value.

Objective To evaluate the left ventricular diastolic function in patients with uremia by two-dimensional speckle tracking technology ( 2D-STI ) . Methods Ninety-three patients with uremia ( serum creatinine value≥ 700 μmol/l) and 29 controls were included . Uremia patients were divided into group with decreased LVEF ( LVEF < 50％ ,group C ,19 cases) and group with normal LVEF ( LVEF≥50％ ) . The latter were divided into group with normal diastolic function ( group A ,31 cases) and group with diastolic dysfunction ( group B ,23 cases) according to the diastolic function;pulsed wave tissue Dopper imaging datas included:diastolic velocity e1′,a1′ and e2′,a2′ at septal or lateral sites of mitral annulus , average E/e′and e′/a′. 2D-STI strain and strain rate parameters included:the longitudinal peak systolic strain ( GLS) ,the longitudinal peak systolic strain rate ( LSRs) ,longitudinal peak strain rate in early diastole (LSRe)andE/LSRe.Results ①Systolicfunctionparameters:comparedwithcontrolgroup,LVEF decreased significantly only in group C( P <0 .05) ,while there was no significant difference among group A ,B and control group ( P> 0 .05 ) ;GLS in group A ,B and C decreased significantly and showed a decreasing trend among these three groups( P <0 .05) ;LSRs in group B and C decreased significantly ,while there was no significant difference between group A and control group( P > 0 .05) . ② Diastolic function parameters:compared with control group ,the average E/e′decreased significantly in group B and C( P <0 .05) ,while group A showed no significant difference( P > 0 .05) . Compared with group A ,the average E/e′increased significantly in group B and C ( P < 0 .05) . Compared with control group ,LSRe in three uremia groups decreased significantly ,which showed a decreasing trend among these three groups ( P <0 .05) ;however ,E/LSRe in three uremia groups increased significantly and showed an increasing trend among these three groups ( P < 0 .05 ) . ③ The correlation analysis showed that there were positive correlations between average e′ and LSRe and between average E/e′ and E/LSRe in uremic patients . Conclusions In patients with uremia ,left ventricular systolic and diastolic function impaired in the early phase . Strain rate parameters in diastole especially E/LSRe obtained by 2D-STI can be used as sensitive , early parameter for evaluation of left ventricular diastolic dysfunction .