1.Expression of CSRP2BP mRNA,ESRRB mRNA and Protein Levels in Cervical Cancer Tissue and Their Correlation with Epithelial Mesenchymal Transition and Clinical Prognosis
Jianfang ZHAO ; Fang SHI ; Xin ZHANG ; Weiran HE
Journal of Modern Laboratory Medicine 2024;39(6):96-101,107
Objective To investigate the expression of cysteine rich protein 2 binding protein(CSRP2BP)mRNA and estrogen related receptors β(ESRRB)mRNA and protein in cervical cancer tissues and their correlation with epithelial mesenchymal transition(EMT)and clinical prognosis.Methods A total of 106 cervical cancer patients admitted to Yan'an Traditional Chinese Medicine Hospital from March 2018 to March 2020 were selected.Real time fluorescence quantitative PCR(RT-qPCR)was used to detect CSRP2BP mRNA,ESRRB mRNA and EMT related indicators[E-cadherin(E-cad),N-cadherin(N-cad),snail family transcriptional repressor 1(Snail)].Immunohistochemistry was used to detect the CSRP2BP protein and ESRRB protein expression in tissues.Pearson correlation analysis was used to analyze the correlation between CSRP2BP mRNA,ESRRB mRNA and EMT related indicators.Kaplan-Meier curve and COX regression were used to analyze the effect of CSRP2BP mRNA and ESRRB mRNA expression on the prognosis of cervical cancer patients.Results CSRP2BP mRNA(3.14±0.52 vs 1.22±0.21)expression and protein positive rate(86.79%vs 9.43%),ESRRB mRNA expression(2.86±0.31 vs 1.06±0.20)and protein positive rate(92.45%vs 8.49%),N-cad mRNA(3.22±0.43 vs 1.05±0.26)and Snail mRNA(2.67±0.36 vs 0.69±0.17)expression in cancer tissues were higher than those in adjacent tissues,while E-cad mRNA(0.84±0.17 vs 2.15±0.24)expression was lower than that in adjacent tissues,and the differences were statistically significant(t/x2=34.249,127.049;50.234,149.466;44.461,51.204,45.858,all P<0.001).The expression of CSRP2BP mRNA and ESRRB mRNA in cervical cancer was positively correlated with N-cad mRNA and Snail mRNA(r=0.663,0.731;0.726,0.715,all P<0.001),and was negatively correlated with E-cad mRNA(r=-0.594,-0.669,all P<0.001).The expression of CSRP2BP mRNA(4.48±0.36,4.21±0.37,4.69±0.33)and ESRRB mRNA(4.48±0.36,4.21±0.37,4.69±0.33)in cervical cancer tissues of patients with FIGO stage Ⅰ B2~Ⅱ A,poor differentiation and lymph node metastasis was higher than that of patients with FIGO stage ⅠA~ⅠB1(2.60±0.44,2.06±0.24),medium and high differentiation(2.43±0.44,2.01±0.25)and no lymph node metastasis(2.53±0.58,2.07±0.26),and the differences were statistically significant(t=16.327,41.135;18.507,36.545;14.501,43.806,all P<0.001).The 3-year overall survival rate of patients with high expression of CSRP2BP mRNA was 66.00%(33/50),which was lower than 89.29%(50/56)in the low expression group,while the 3-year overall survival rate of the high expression group of ESRRB mRNA was 65.38%(34/52),which was lower than 90.74%(49/54)of the low expression group,and the differences were statistically significant(Log rank x2=5.401,11.400,P=0.020,0.001).Multivariate Cox regression analysis showed that,CSRP2BP mRNA high expression(HR=1.327,95%CI:1.097~1.605),ESRRB mRNA high expression(HR=1.322,95%CI:1.108~1.577),FIGO stage Ⅰ B2~Ⅱ A(HR=1.423,95%CI:1.154~1.755),lymph node metastasis(HR=1.363,95%CI:1.095~1.698)and poor differentiation(HR=1.297,95%CI:1.064~1.581)were risk factors affecting the prognosis of cervical cancer patients(all P<0.001).Conclusion The increased expression of CSRP2BP mRNA and ESRRB mRNA in cervical cancer are related to EMT related indicators and adverse clinical and pathological features,and are new tumor markers for prognostic evaluation.
2.Two cases of epilepsy without periventricular nodules caused by the ARF1 gene mutation and literature review
Weiran ZHANG ; Na SUN ; Shugang WANG ; Liu LIU ; Lihua JIANG ; Congying ZHAO ; Feng GAO ; Peifang JIANG ; Zhefeng YUAN
Chinese Journal of Applied Clinical Pediatrics 2024;39(12):936-939
A retrospective analysis was made on the clinical data and gene mutation characteristics of 2 children admitted to the Children′s Hospital of Zhejiang University School of Medicine for epilepsy without periventricular nodules caused by the ARF1 gene mutation from August 2023 to February 2024, and relevant literature was reviewed.Both patients presented with seizures and psychomotor retardation, and 1 of them was diagnosed with West syndrome.Whole exome sequencing confirmed that the 2 patients carried a missense mutation in the ARF1 gene (c.55C>A, p.R19S).Brain magnetic resonance imaging (MRI) of 2 patients revealed no obvious abnormalities.A summary analysis of 5 cases of ARF1 gene mutations reported in three foreign literatures showed that patients with ARF1 gene mutations usually presented with seizures, developmental delay, hypotonia, mental retardation, and motor stereotypies.MRI showed periventricular nodular heterotopia, corpus callosum dysplasia, subcortical white matter abnormalities, and delayed myelination.This study found for the first time that ARF1-related disorders can occur without significant brain structural malformations, indicating that there are inconsistencies in neuroimaging findings, adding valuable phenotypic information to this gene.The differences in imaging findings may be the result of genetic background or variation in ARF1-interacting proteins, or may be caused by altered regulatory mechanisms of protein activity.
3.Accuracy of three-dimensional periodontal ligament models generated using cone-beam computed tomography at different resolutions for the assessment of periodontal bone loss
Hangmiao LYU ; Li XU ; Huimin MA ; Jianxia HOU ; Xiaoxia WANG ; Yong WANG ; Yijiao ZHAO ; Weiran LI ; Xiaotong LI
The Korean Journal of Orthodontics 2023;53(2):77-88
Objective:
To develop a method for generating three-dimensional (3D) digital models of the periodontal ligament (PDL) using 3D cone-beam computed tomography (CBCT) reconstruction and to evaluate the accuracy and agreement of the 3D PDL models in the measurement of periodontal bone loss.
Methods:
CBCT data collected from four patients with skeletal Class III malocclusion prior to periodontal surgery were reconstructed at three voxel sizes (0.2 mm, 0.25 mm, and 0.3 mm), and 3D tooth and alveolar bone models were generated to obtain digital PDL models for the maxillary and mandibular anterior teeth. Linear measurements of the alveolar bone crest obtained during periodontal surgery were compared with the digital measurements for assessment of the accuracy of the digital models. The agreement and reliability of the digital PDL models were analyzed using intra- and interexaminer correlation coefficients and Bland–Altman plots.
Results:
Digital models of the maxillary and mandibular anterior teeth, PDL, and alveolar bone of the four patients were successfully established. Relative to the intraoperative measurements, linear measurements obtained from the 3D digital models were accurate, and there were no significant differences among different voxel sizes at different sites. High diagnostic coincidence rates were found for the maxillary anterior teeth. The digital models showed high intra- and interexaminer agreement.
Conclusions
Digital PDL models generated by 3D CBCT reconstruction can provide accurate and useful information regarding the alveolar crest morphology and facilitate reproducible measurements. This could assist clinicians in the evaluation of periodontal prognosis and establishment of an appropriate orthodontic treatment plan.
4.Intra-abdominal aortic balloon occlusion in the management of placenta percreta.
Weiran ZHENG ; Ruochong DOU ; Jie YAN ; Xinrui YANG ; Xianlan ZHAO ; Dunjin CHEN ; Yuyan MA ; Weishe ZHANG ; Yiling DING ; Ling FAN ; Huixia YANG
Chinese Medical Journal 2022;135(4):441-446
BACKGROUND:
Massive bleeding is the main concern for the management of placenta percreta (PP). Intra-abdominal aortic balloon occlusion (IABO) is one method for pelvic devascularization, but the efficacy of IABO is uncertain. This study aims to investigate the outcomes of IABO in PP patients.
METHODS:
We retrospectively reviewed the clinical data of PP cases from six tertiary centers in China between January 2011 and December 2015. PP cases with/without the use of IABO were analyzed. Propensity score matching analysis was performed to reduce the effect of selection bias. Postpartum hemorrhage (PPH) and the rate of hysterectomy, as well as neonatal outcomes, were analyzed.
RESULTS:
One hundred and thirty-two matched pairs of patients were included in the final analysis. Compared with the control group, maternal outcomes, including PPH (68.9% vs. 87.9%, χ2 = 13.984, P < 0.001), hysterectomy (8.3% vs. 65.2%, χ2 = 91.672, P < 0.001), and repeated surgery (1.5% vs. 12.1%, χ2 = 11.686, P = 0.001) were significantly reduced in the IABO group. For neonatal outcomes, Apgar scores at 1 minute (8.67 ± 1.79 vs. 8.53 ± 1.68, t = -0.638, P = 0.947) and 5 minutes (9.43 ± 1.55 vs. 9.53 ± 1.26, t = 0.566, P = 0.293) were not significantly different between the two groups.
CONCLUSIONS
IABO can significantly reduce blood loss, hysterectomies, and repeated surgeries. This procedure has not shown harmful effects on neonatal outcomes.
Aorta
;
Balloon Occlusion/methods*
;
Blood Loss, Surgical
;
Female
;
Humans
;
Hysterectomy
;
Infant, Newborn
;
Placenta Accreta/surgery*
;
Placenta Previa/surgery*
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Postpartum Hemorrhage
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Pregnancy
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Retrospective Studies
5.Continuous monitoring of intracranial pressure and partial oxygen pressure of brain tissue in patients with severe traumatic brain injury after standard decompressive craniectomy and microscopic hematoma removal
Zhong WANG ; Ruijian ZHANG ; Zhitong HAN ; Xiaojun ZHANG ; Jingang BAO ; Yisong ZHANG ; Weiping ZHAO ; Weiran YANG ; Zhilong ZHANG
Clinical Medicine of China 2022;38(1):68-73
Objective:To investigate the effect of continuous intracranial pressure (ICP) and brain oxygen partial pressure (PbtO 2) monitoring and guiding treatment after the application of standard large bone flap decompression and microhematoma removal in patients with severe traumatic brain injury (TBI). Methods:A retrospective analysis was done of 41 patients with TBI in Department of Neurosurgery in the Inner Mongolia People's Hospital from January 2018 to May 2020. Patients with Glasgow coma scale (GCS)<8 points were treatesd with microscopical removal of hematoma and contusion brain tissue and standard large bone flap decompression. Intraoperative intracranial pressure and brain tissue oxygen partial pressure monitoring probes were placed. Postoperatively, continuous intracranial pressure monitoring and partial oxygen pressure monitoring of brain tissue were performed, and target-based treatment under ICP and PbtO 2 monitoring was performed. According to the Glasgow Outcome (GOS) score after six months, patients were divided into a good outcome group (4-5 scores) and a poor outcome group (1-3 scores). There were 26 cases in good prognosis group and 15 cases in poor prognosis group. Linear regression analysis was used to further evaluate the relationship between PbtO 2, ICP and GOS score. The measurement data of normal distribution were compared by independent sample t-test. The counting data were expressed in cases (%), and the comparison between groups was adopted χ 2 inspection. The general linear bivariate Pearson correlation test was used. Results:The mean value of PbtO 2 (17.42±5.34) mmHg in the poor prognosis group was lower than that in the good prognosis group (24.65±5.61) mmHg, with statistical significance ( t=4.04, P<0.001). The mean value of ICP (22.32±3.45) mmHg in the poor prognosis group was higher than that (17.32±3.23) mmHg in the good prognosis group, with statistical significance ( t=4.15, P<0.001). Using PbtO 2 and ICP as independent variables and GOS score after 6 months as dependent variable, a regression equation was established ( Y=4.040 X+7.497; Y=-2.549 X+28.63). The mean value of PbtO 2 was positively correlated with GOS scores after 6 months in patients with severe head injury ( r=0.75, P<0.001). The mean value of ICP was negatively correlated with the prognosis of patients with severe head injury ( r=-0.87, P<0.001). Conclusion:The treatment guided by ICP combined with PbtO 2 monitoring is valuable in improving the prognosis of patients with severe traumatic brain injury after standard decompressive craniectomy, and may improve the prognosis 6 months after the injury.
6.Late-onset isolated sulfite oxidase deficiency: a case report and literature review
Congying ZHAO ; Yi HUA ; Weiran ZHANG ; Liu LIU ; Guoxia SHENG ; Lu XU ; Lihua JIANG ; Shanshan MAO ; Peifang JIANG ; Feng GAO ; Zhefeng YUAN
Chinese Journal of Applied Clinical Pediatrics 2022;37(16):1262-1264
The clinical data of a case with late-onset isolated sulfite oxidase deficiency(ISOD)admitted in the Department of Neurology, Children′s Hospital, Zhejiang University School of Medicine in July 2021 were retrospectively analyzed.Fifteen previously published cases of late-onset ISOD were also reviewed.The patient was a girl, who was hospitalized because of " motor regression with mental retardation for 5 days" at 1 year old.The manifestations of the patient were extrapyramidal symptoms, regression of motor development and seizures.The level of urinary sulfites in the patient was increased.Magnetic resonance imaging (MRI) features were bilateral pallidus and substantia nigra.Gene sequencing suggested a pure missense mutation of the sulfite oxidase( SUOX) gene c. 650(exon5)G>A(p.Arg217Gln). In 16 cases of late-onset ISOD, the median age at onset and diagnosis was 10.5 months and 34.0 months, respectively.The common clinical manifestations were hypotonia (13 cases), seizures (10 cases), movement disorders (9 cases), and ectopia lentis (6 cases). The most common brain MRI feature was pallidus changes (11 cases), followed by lesions of substantia nigra (5 cases), and cerebral atrophy (4 cases). Fourteen cases of late-onset ISOD showed a positive urinary sulfite test.The missense mutation of the SUOX gene was found in 9 cases.It suggested that brain MRI involvement of bilateral pallidus, high excretion of urine sulfites and the missense mutation of the SUOX gene were important diagnostic clues for late-onset ISOD.
7.Application of continuous monitoring of intracranial pressure and brain oxygen partial pressure in the treatment of patients with severe craniocerebral injury
Zhong WANG ; Ruijian ZHANG ; Zhitong HAN ; Junqing WANG ; Rile WU ; Weiping ZHAO ; Xiaojun ZHANG ; Jingang BAO ; Weiran YANG ; Zhilong ZHANG
Chinese Critical Care Medicine 2021;33(4):449-454
Objective:To investigate the effects of continuous monitoring intracranial pressure (ICP) and brain oxygen partial pressure (PbtO 2) on the prognosis of patients with severe craniocerebral injury. Methods:A prospective randomized controlled trial was conducted. Seventy patients with severe craniocerebral injury with a Glasgow coma score (GCS) 4-8 admitted to the neurosurgical intensive care unit (NICU) of the People's Hospital of Inner Mongolia Autonomous Region from January 2017 to May 2020 were enrolled, and they were divided into ICP monitoring group and ICP+PbtO 2 monitoring group by random number table. Patients in ICP monitoring group received ICP monitoring and were given traditional treatment of controlling ICP and cerebral perfusion pressure (CPP), the therapeutic target was ICP < 20 mmHg (1 mmHg = 0.133 kPa) and CPP > 60 mmHg. Patients in ICP+PbtO 2 monitoring group were given ICP and PbtO 2 monitoring at the same time, and oxygen flow was adjusted on the basis of controlling ICP and CPP to maintain the PbtO 2 > 20 mmHg, and the therapeutic target of ICP and CPP was the same as the ICP monitoring group. ICP and PbtO 2 values were recorded during monitoring in the two groups, the results of CPP, GCS and arterial blood gas analysis were recorded, and the prognosis at 3 months and 6 months after injury was compared by Glasgow outcome scale (GOS) score between the two groups. GOS score > 3 was considered as good prognosis. Kaplan-Meier survival curve was drawn, and the 3-month and 6-month cumulative survival rates of the two groups were analyzed. Linear regression analysis was used to further evaluate the relationship between PbtO 2 and GOS score. Results:Finally, a total of 70 patients with severe craniocerebral injury were enrolled in the analysis, 34 patients received ICP combined with PbtO 2 monitoring and guided therapy, and 36 patients received ICP monitoring alone. The average ICP of ICP+PbtO 2 monitoring group was significantly lower than that of ICP monitoring group (mmHg: 13.4±3.2 vs. 18.2±8.3, P < 0.01). Although the CPP in both groups was great than 60 mmHg, the average CPP of ICP+PbtO 2 monitoring group was significantly higher than that of ICP monitoring group (mmHg: 82.1±10.5 vs. 74.5±11.6, P < 0.01). No significant difference was found in average GCS score or arterial partial pressure of carbon dioxide (PaCO 2) between the ICP+PbtO 2 monitoring group and ICP monitoring group [GCS score: 5.3±2.3 vs. 5.2±2.2, PaCO 2 (mmHg): 33.5±4.8 vs. 32.6±5.2, both P > 0.05]. The average arterial partial pressure of oxygen (PaO 2) of ICP+PbtO 2 monitoring group was obviously higher than that of ICP monitoring group (mmHg: 228.4±93.6 vs. 167.3±81.2, P < 0.01). Compared with the ICP monitoring group, the good outcome rates of 3 months and 6 months after injury in the ICP+PbtO 2 monitoring group were significantly higher (3 months: 67.6% vs. 38.9%, 6 months: 70.6% vs. 41.7%, both P < 0.05). Kaplan-Meier survival curve showed that the 3-month and 6-month cumulative survival rates of ICP+PbtO 2 monitoring group were significantly higher than those of ICP monitoring group (3 months: 85.3% vs. 61.1%, Log-Rank test: χ2 = 5.171, P = 0.023; 6 months: 79.4% vs. 55.6%, Log-Rank test: χ2 = 4.511, P = 0.034). Linear regression analysis showed that PbtO 2 was significantly correlated with GOS score at 3 months and 6 months after injury in patients with severe craniocerebral injury ( r values were 0.951 and 0.933, both P < 0.01). Conclusions:PbtO 2 compared with ICP monitoring guiding therapy is valuable in improving the prognosis of patients with severe craniocerebral injury. It can improve the prognosis at 3-6 months after injury.
8.Effects of sulforaphane on anxiety and fear memory in AD mice and its oxidative stress mechanism
Qichao GAO ; Weiran LI ; Shengxiao ZHANG ; Shifan CHAI ; Xinrui ZHAO ; Zhaojun WANG
Chinese Journal of Behavioral Medicine and Brain Science 2021;30(5):385-390
Objective:To explore the effects of sulforaphane (SFN), an activator of Nrf2, on anxiety and fear memory in Alzheimer's disease(AD) model mice and mechanism.Methods:The AD mice and wild type (WT) mice with the same background were randomly divided into four groups ( n=12 for each group): wild type + normal saline group (WT+ NS), wild type + sulforaphane (WT+ SFN), AD model + normal saline group (AD+ NS) and AD model + sulforaphane group (AD+ SFN). SFN was dissolved in normal saline (0.9% NaCl) and prepared solution with concentration of 1 g/L.According to body weight, mice in WT+ SFN group and AD+ SFN group were intraperitoneally injected with SFN (10 mg/kg), and mice in WT+ NS group and AD+ NS group were intraperitoneally injected with the same volume of normal saline once a day for 30 days.The open field test was used to detect the autonomous exploration ability and anxious behavior of mice.The elevated cross maze was used to detect the anxiety of mice.Conditional fear test was used to test the fear memory behavior of mice.Finally, the expression of superoxide dismutase(SOD) and malondialdehyde(MDA) in the hippocampus and cerebral cortex were detected by ELISA.Two-way ANOVA analysis was performed using GraphPad Prism 8.0.2 software. Results:In the open field test, the percentage of time in central region in AD+ SFN group ((9.99+ 0.37)%) was higher than that of AD+ NS group ((8.47+ 0.42)%) ( q=3.842, P<0.05). In the elevated cross maze, the percentage of time in open arm of AD+ SFN group ((26.2±1.6)%) was higher than that in AD+ NS group ((15.8±1.0)%) ( q=7.452, P<0.01). In the conditional fear test, all the mice of the four groups developed the fear memory, but AD+ SFN group showed higher freezing time ratio ((64.5±3.8)%) than AD+ NS group ((51.0±4.3)%)( q=5.266, P<0.01) in the testing stage.After SFN intervention, the important indicator of oxidative stress, the expression levels of SOD in hippocampus ( q=6.370, P<0.01) and cortex ( q=7.858, P<0.01) of AD mice increased, while the level of MDA in hippocampus ( q=5.146, P<0.05) and cortex ( q=5.833, P<0.01) decreased. Conclusion:SFN may inhibit oxidative stress through Nrf2 pathway, thereby improving anxiety and fear memory in AD mice.
9.Matched comparison of low kVp imaging and CT spectral imaging in image quality and radiation dose at abdominal CT
Peijie LYU ; Jie LIU ; Huiping ZHAO ; Yaru CHAI ; Weiran LI ; Jianbo GAO
Chinese Journal of Radiology 2019;53(1):57-62
Objective To investigate the image quality and radiation dose of spectral CT with automatic spectral imaging mode selection (ASIS) and adaptive statistical iterative reconstruction (ASIR) at abdominal CT as compared with low-kVp CT with ASIR.Methods Two hundred patients underwent the plain and arterial-phase (AP) and portal venous-phase (PVP) contrast-enhanced abdominal CT scan were analyzed prospectively.The patients were randomly assigned to the control group (low-kVp CT scan) and study group (spectral CT scan),if BMI ≤ 23.9 kg/m2,patients were assigned into group A (80 kVp) or group B (spectral CT with ASIS);if 24.0 kg/m2 ≤ BMI<28.9 kg/m2,patients were assigned into group C (100 kVp) or group D (spectral CT with ASIS)(n=50 each).Groups A and B,groups C and D were matched by gender,age,body mass index,cross sectional area and contrast agent dose respectively.Low-kVp images and monochromatic images (40 to 60 keV) were all reconstructed by using ASIR.Radiation dose and quantitative parameters (image noise in HU and contrast-to-noise ratio of the liver,aorta and portal vein) were compared by using t test while overall image quality was assessed by Mann-Whitney U test between the matched groups.Results Radiation dose in the group B was significantly higher than group A (increased by 10%,P<0.05) but there was no significant differences between groups C and D (P>0.05).Compared to the control group,image noises in the study group were higher at 40 keV and 50 keV (P<0.05),but similar at 40 keV (P>0.05).At the energy level of 40 keV,the study group showed higher CNRs,but lower overall image quality scores than the control group except for the similar image quality scores between groups A and B during AP (P<0.05).At the energy level of 50 keV,the CNRs and overall image quality scores in the study group were higher than or similar to the control group.At the energy level of 60 keV,the study group showed lower or similar CNRs,but higher or similar overall image quality scores compared with the control group.Conclusions The radiation dose of spectral CT with ASIS technique was slightly higher than 80 kVp CT but similar to 100 kVp CT.By combining ASIR technique,monochromatic image at 50 keV can maintain or improve CNR and overall image quality as compared with low-kVp images.
10.Thevalueofmonochromaticenergyimagingderivedfrom RevolutionCTindetectingcoronary plaqueswithdifferentconcentrationofcontrastagent:aphantomexperiment
Weiran LI ; Peijie LÜ ; Huiping ZHAO ; Ying LI ; Huixia WANG ; Jianbo GAO
Journal of Practical Radiology 2019;35(4):647-650,654
Objective Toexplorethevalueofmonochromaticenergyimaginggeneratedfrom RevolutionCTindetectingcoronary plaquesindifferentconcentrationsofcontrastagent.Methods Sixtesttubesnumbered3,4,5,6,8and9inthephantom wereselectedand filledupwithdifferentconcentrationsofiodinesolutions(20,10,5,2.5,0,13mgI/mL,respectively),fishbonesimulatingcalcified plaqueandstreakyporksimulatinglipid/fibrousplaque.EachtubeunderwentspectralCTscan(studygroup,70keV monochromatic energyimaging)and120kVpCTscan (controlgroup)respectivelyinRevolutionCT.Theabilityofplaquedetectionwasevaluated subjectively,andfurtheranalysis was madeontheimages withascoregreaterthanorequaltothreepoints.One-way ANOVA and Bonferroni m ethod w ere used to co m pare the C T values and C N R in different tubes in the intra-group co m parison ,w hile paired t test and M ann-W hitney U testwereusedfortheinter-groupcomparison.Results TheoverallimagequalityofNo.4,5and9testtubes inbothgroupsmettheclinicaldiagnosticlevel.Intheintra-groupcomparison,No.5testtubeshowedhigherCNRofcalcifiedplaque andNo.9testtubeshowedhigherCNRoflipidplaqueandfibrousplaquethantheothers(t=4.105-29.214,allP<0.001).Whilein theinter-groupcomparison,thestudygroupshowedsimilarCNRofcalcifiedplaqueinNo.9testtube(t=-1.576,P=0.130)tothecontrol group,andhigherCNRintheothersthanthecontrolgroup(Z=-4.074--3.815,t=-14.782--3.520,allP<0.05).Conclusion Comparedwith120kVpCTimages,monochromaticenergyimagingat70keVfrom RevolutionCTshowedbetteroverallimagequality andcoulddisplaycoronaryplaquesbetterwiththecontrastagent concentrationfrom5mgI/mLto13mgI/mL.

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