Objective To evaluate the relevance of MSCT pulmonary function parameters and pulmonary function test (PFT) parameters, and to define the reference value of MSCT pulmonary function parameters. Methods Thirty male volunteers received clinical PFT and MSCT scan. MSCT scan was perfomed at the end of the maximum inspiratory and maximum expiratory. All data were analyzed with the lung analysis software of computer-aided inspection system correlatedly with pulmonary function parameters. Results The lung volume at full inspiratory volume (Vin) and full expiratory volume (Vex) in MSCT scan had good correlation with total lung capacity (TLC) and residual volume (RV) (r=0.90, P<0.01; r=0.74, P<0.01). Vex/Vin was correlated with RV/TLC (r=0.74, P<0.01), and Vin-Vex was correlated with MVC (r=0.85, P<0.01). In inspiration, the average lung density was (-879.51±32.82) HU, the density per unit volume was (0.12±0.03) g/cm3, while in expiratory they were (-688.14±62.38) HU and (0.31±0.06) g/cm3. Conclusion MSCT pulmonary function tests with the analysis software of computer-aided inspection system have good correlation with PFT.

[Objective]To evaluate the two-dimensional shear wave elastography(2D SWE)in predicting the prognosis of the patients with acute-on-chronic hepatitis B liver failure(ACLF-HBV).[Methods]312 patients diagnosed with ACLF-HBV at the De-partment of Infectious Diseases in the Third Affiliated Hospital of Sun Yat-sen University from October 1st 2013 to December 31th 2015 were recruited. The baseline data of all patients,including 2D SWE,laboratory data,ultrasonographic data,Model for End-stage Liver Disease score(MELD),Child-Turcotte-Pugh score(CTP),and King′s College Hospital score(KCH),were collected when enrolled. All patients were followed up for at least 90 days and their clinical outcomes(recovering or worsening)were recorded. 2D SWE values of all patients were dynamically collected every 2~4 weeks during the follow-up until death,liver transplantation, or discharging from hospital.[Results]The worsening patients showed higher 2D SWE values than the recovering ones[(44.0 ± 7.5) kPa vs(36.8 ± 10.3)kPa,t=-6.5,P=0.000],2D SWE value less than 39.2 kPa could be a prediction of the patient′s recovery in 90 days.The predictive value of 2D SWE(AUROC=0.73)was higher than that of KCH(AUROC:0.65,z=2.1,P=0.033). Among all the dynamically measured patients,2D SWE rose from(42.1 ± 8.0)kPa to(47.5 ± 9.3)kPa in the worsening group during the 90-day follow-up,while nearly stable in the recovery group.[Conclusion]Noninvasive liver stiffness measurement by 2D SWE is a use-ful method in evaluating the prognosis of ACLF-HBV patients. Taking a cutoff of 39.2 kPa,patients with higher 2D SWE values could have worse clinical outcomes ,otherwise better. It seems that dynamically measuring 2D SWE values could also be helpful ,but more research in the future should be needed.

Objective To evaluate transcather arterial chemoembolization (TACE) with hydroxycamptothecin combined with hepatectomy in treatment of primary liver cancer.Methods 64 primary liver cancer cases admitted and treated in Shanxi Provincial Cancer Hospital were divided into two groups with 32 cases in each.The control group were treated by surgery only and in the study group patients received TACE and hepatectomy.Results 0.5-year and 1-year recurrence rate in the study group were respectively 9.38％ and 28.13％,significantly lower than those in the control group.There was no significant difference in the 2-year recurrence rate between the two groups.0.5-year,1-year and 2-year survival rate in the study group were respectively 93.75％,84.38％ and 65.63％,significantly better than those in the control group.The AST and ALT were respectively (86 ±42)U/L,(96 ±55)U/L which were lower than those in the control group.The ALB and TBiL were respectively (32 ± 10) g/L and (24 ± 9) μmol/L,which were not significantly different with the control group.Conlunsion Hydroxycamptothecinbased TACE combined with hepatectomy is better than hepatectomy only for the treatment of primary liver cancer.

Objective: To evaluatethe efficacy of renal artery stenting combining optimal drug therapy in patients with atherosclerotic renal artery stenosis.
Methods:This is a prospective cohort study for patients who received percutaneous renal artery stenting in our hospital from 2011-09 to 2013-03. All patients had conifrmed diagnosis of atherosclerotic renal artery stenosis combing hypertension and/or renal functional damage. Thepatients received optimal drug therapy for anti-platelet and blood pressure, lipids, glucose controlling, and they were followed-up for at least 12 months to observe the improvement of blood pressure and renal function.
Results:There were 149 patients at the mean age of (61.54 ± 9.63) years and 185 renal artery stenosis with stent implantation;the average stenosis rate was (83.11±7.30)%and the success rate of operation was 99.32%(148/149). During follow-up period, the patients had increased estimated glomerular ifltration rate (GFR) compared to base line from (76.49 ± 22.50) ml/(min·1.73 m2) to (84.09 ± 28.79) ml/(min·1.73 m2), P<0.05 and decreased 24 h urinary protein from 0.1(IQR 0.02, 0.5) g to 0.04 (IQR0.01, 0.11)g, P<0.001;less type of drug therapy for hypertension from 2.22 to 1.56, P<0.05, decreased clinical and 24h dynamic systemic/diastolic blood pressure from (153.4 ± 15.6)/(83.77 ± 12.60) mmHg to (134.6 ± 14.4)/(73.57 ± 9.12) mmHg and from (143.32 ± 19.87)/(80.51 ± 11.33) mmHg to (124.44 ± 14.90)/(69.09 ± 9.49) mmHg, all P<0.05.
Conclusion:Renal artery stenting combining optimal drug therapy may improve blood pressure controlling and renal function in strictly selected patients with atherosclerotic renal artery stenosis.

Objective: To compare the clinical value of total gastrectomy and proximal gastrectomy in the treatment of gastric fundus carcinoma. Methods: 80 patients with gastric fundus cancer were divided into observation group and control group according to the random number method.The observation group was treated with total gastrectomy, and the control group was treated by proximal gastrectomy.The operation-related conditions, such as operation time, intraoperative bleeding and postoperative anal exhaust time of the two groups were compared.After surgery R0 resection rate and 2-year survival rate were analyzed. Results: The operative time in the observation group was (86.3±1.9)min, which was shorter than (102.3±2.6)min in the control group (t=31.424, P<0.05). The intraoperative blood loss of the observation group was (180.5±15.0)mL, which was less than (230.0±25.0)mL of the control group (t=10.738, P<0.05). The anal exhaust time of the observation group was (41.5±2.1)h, which was shorter than (56.9±3.3)h of the control group (t=24.900, P<0.05). The percentage of pathologic R0 resection of the observation group was 32.5%(13/40), which was higher than 5.0%(2/40) of the control group (χ²=8.205, P<0.05). The 1-year survival rate and 2-year survival rate in the observation group were 92.5%, 67.5%, respectively, which were significantly higher than those in the control group(60.0%, 42.5%, χ²=4.943, 5.051, all P<0.05). Conclusion Compared with the proximal gastrectomy, the total gastrectomy in the treatment of gastric fundus carcinoma has shorter operation time, less intraoperative blood loss, quicker postoperative recovery, higher pathologic resection rate and survival rate.

Traditional EP analysis is developed under the condition that the background noises in EP are Gaussian distributed. Alpha stable distribution, a generalization of Gaussian, is better for modeling impulsive noises than Gaussian distribution in biomedical signal processing. Conventional blind separation and estimation method of evoked potentials is based on second order statistics (SOS). In this paper, we propose a new algorithm based on minimum dispersion criterion and Givens matrix. The simulation experiments show that the proposed new algorithm is more robust than the conventional algorithm.
Algorithms ; Artifacts ; Brain ; physiology ; Electroencephalography ; methods ; Evoked Potentials ; physiology ; Humans ; Normal Distribution ; Signal Processing, Computer-Assisted

ObjectiveTo investigate the immediate effect of wearing a soft ankle brace on dynamic and static balance function and biomechanics of affected lower limbs during walking in chronic ankle instability (CAI) patients. MethodsFrom January to August, 2021, 40 CAI patients from Musculoskeletal Rehabilitation Center, Beijing Rehabilitation Hospital, Capital Medical University were measured dynamic and static balance indexes with Zebris FDM-System and Y balance test, before and after wearing a soft ankle brace; while the kinetics indexes and surface electromyography of the affected lower extremities during walking were collected with Zebris FDM-System and a surface electromyography telemeter simultaneously. ResultsThe velocity and area of center of pressure reduced in both open and closed eye modes (|t| > 2.876, P < 0.01), the Y-balance scores increased in all the directions (|t| > 21.212, P < 0.001) after wearing brace; while the peak pressures and impulses increased in the midfoot and medial forefoot regions (|t| > 2.057, P < 0.05), and decreased in the lateral heel, lateral forefoot and toe regions (|t| > 2.464, P < 0.05), and the root mean square of surface electromyography increased in the tibialis anterior and lateral gastrocnemius (|t| > 2.159, P < 0.05) during walking. ConclusionWearing soft brace can immediately improve dynamic and static balance of CAI patients, and optimize plantar kinetic distribution and enhance activation of the anterior tibial and the lateral head of gastrocnemius of the affected limb during walking, to improve motor control of CAI patients.

Based on the unique syndrome characteristics of metabolic associated fatty liver disease （MAFLD） in Lingnan （岭南） area， this paper discussed the clinical experience of Huangqi （Radix Astragali） in the treatment of MAFLD in Lingnan area. It is summarized that spleen deficiency and yang weakness， and internal accumulation of damp-turbidity are the source of the disease， and at the early stage， Huangqi， commonly 15~30 g， could be used to fortify the spleen and warm the earth， thereby making the deficiency fire latent， as well as raise the clear and warm the exterior so as to inhibit damp-turbidity； medication needs to be progressively supplemented， and can be used together with Taizishen （Radix Pseudostellariae）， Baizhu （Rhizoma Atractylodis Macrocephalae）， Fuling （Poria）， and Fangfeng （Radix Saposhnikoviae） to back up the earth and inhibit dampness. Qi stagnation and blood constraint， yin dampness and heat accumulation are the pathogenesis of disease progression. Huangqi should be taken to invigorate the spleen and flourish the liver， unblock yang， and move stagnation. The dosage is often maintained at 30~60 g， to circulate the qi and unblock yang qi in the middle jiao （焦）， usually combined with Chaihu （Radix Bupleuri）， Baishao （Radix Paeoniae Alba） and Yujin （Radix Curcumae） integrating warm and cool medicinals. Stubborn turbid and fat condensing in the liver is a severe stage of the disease and may be concurrent with various pathogens such as dampness， phlegm， and heat， for which 60~90 g Huangqi should be used to invigorate blood and disperse fat， reinforce healthy qi and expel pathogens， often with medicinals that can disperse fat and direct the turbid downward such as Shanzha （Fructus Crataegi）， Juemingzi （Semen Cassiae）， Lulutong （Fructus Liquidambaris） and Zexie （Rhizoma Alismatis）. When prescribing， it is suggested to combine with other medicinals according to the season， thereby adjusting the ascending and descending of the property of Huangqi， thereby conforming to the nature of the four seasons.

ObjectiveTo observe the effect of surface sensation training on walking function of patients after anterior cruciate ligament reconstruction (ACLR). MethodsFrom January to November, 2021, 56 ACLR inpatients in Beijing Rehabilitation Hospital were randomly divided into control group (n = 28) and experimental group (n = 28). The control group received routine rehabilitation training of 45 minutes a time, while the experimental group received routine rehabilitation training of 30 minutes and surface sensation training of 15 minutes a time, for eight weeks. Their toe-out angle and affected side impulse percentage of plantar seven zones were measured before and after intervention. ResultsThe toe-out angle of both the healthy and the affected sides decreased in both groups after intervention (t > 4.615, P < 0.001), and it was less in the affected side in the experimental group (t = 2.263, P < 0.05). The impulse percentage in heel medial and heel lateral areas increased in both groups after intervention (t > 4.221, P < 0.001), and it was more in the experimental group (t > 3.651, P < 0.01); while the impulse percentage in middle foot, foot intermediate and foot lateral areas decreased in both groups (t > 3.174, P < 0.01), and it was less in foot intermediate and foot lateral areas in the experimental group (t > 2.366, P < 0.05); the impulse percentage decreased in foot medial and toe areas in the experimental group (t > 3.508, P < 0.01), but there was no significant difference between two groups (t < 1.608, P > 0.05). ConclusionSurface sensation training can further improve the foot deflection and distribution of impulse of affected side in patients after ACLR during walking, to normalize the load patterns.

Objective: Screen the pathogenic genes of a pedigree with clinical manifestation of familial dilated cardiomyopathy in Inner Mongolia. Methods: A total of 3 patients with dilated cardiomyopathy and 20 family members from the same family were examined in Ordos Central Hospital in Inner Mongolia from October, 2003 to August, 2017. Data on medical history, physical examinations, electrocardiograms, and echocardiography were obtained. 5 ml peripheral blood was sampled for per person. Chip Capture Sequencing technology was used to capture all the exons and splice sites of the genes that associated with hereditary cardiomyopathy and hereditary arrhythmia. The mutations in these genes were detected by high-throughput sequencing. All suspected pathogenic loci identified by high-throughput sequencing were verified by Sanger sequencing used for mutation detection. One hundred and fifty gender, age and race matched healthy people were included as the control group. Results: Pathogenic gene variations were detected in 3 symptomatic family members and 1 carrier from the pedigree. Five pathogenic gene variations were identified in the proband (Ⅱ1), a pSer236Gly and a pArg215Cys variation in the MYBPC3 gene, a pGln90Arg variation in the DSP gene, and pAsn2912Asp and pGlu2910Val variation in the DMD gene. One pathogenic variation was detected in Ⅲ3, which was a pArg215Cys variation in the MYBPC3 gene. Two pathogenic variations were detected in Ⅲ7, a pSer236Gly variation in the MYBPC3 gene and a pGln90Arg variation in the DSP gene. Two pathogenic variations were detected in the Ⅳ7, a pSer236Gly variation in the MYBPC3 gene and a pGln90Arg variation in the DSP gene. No gene variation loci were detected in the other family members and the control group. Conclusion MYBPC3 gene, DSP gene and DMD gene variations are present in the familial dilated cardiomyopathy pedigree from Inner Mongolia, and these variations may be related with familial dilated cardiomyopathy.