liver stiffness measurement

肝脏硬度测量
  • 文章类型: Journal Article
    增强肝纤维化(ELF)评分是肝纤维化的非侵入性评估。我们的目的是评估ELF评分3年的变化与肝脏硬度测量(LSM)-肝细胞癌(HCC)评分相结合,以预测慢性乙型肝炎(CHB)患者的HCC。这是一项前瞻性队列研究。接受瞬时弹性成像(TE)检查和LSM-HCC评分定义的中度或高风险HCC的患者被邀请在大约3年后重复检查。在这两个时间点检索他们的血清样品以评估ELF评分变化。主要终点是HCC。有445例CHB患者(男性:73.9%;平均年龄:51.6±10.3岁)接受了两次TE检查和ELF评分。其中,252(56.6%)和193(43.4%)患者在由LSM-HCC评分定义的首次评估中和高HCC风险,分别。Kaplan-Meier分析显示,ELF评分的变化可以对LSM-HCC评分定义的中危和高危患者的HCC风险进行分层(中危组p<0.001;高危组p=0.011)。患者仍然有轻度或中度纤维化在两个评估肝癌的风险最低(4.0%),其次是在平均163个月的随访期间纤维化消退的患者(11.3%;p=0.014)。仍然患有或进展为严重纤维化的患者发生HCC的风险最高(>20%)。一致的发现被证明在由LSM-HCC评分定义的HCC的中间和高风险的患者。ELF评分的动态变化为LSM-HCC评分提供了额外的价值,用于对CHB患者的HCC风险进行分层。
    Enhanced liver fibrosis (ELF) score is a noninvasive assessment for liver fibrosis. We aimed to evaluate the performance of changes in ELF score 3 years apart in combination with liver stiffness measurement (LSM)-hepatocellular carcinoma (HCC) score to predict HCC in chronic hepatitis B (CHB) patients. This is a prospective cohort study. Patients who underwent transient elastography (TE) examinations and at intermediate or high risk of HCC defined by LSM-HCC score were invited to repeat the examination about 3 years later. Their serum samples at these two time points were retrieved to assess the ELF score changes. The primary endpoint was HCC. There were 445 CHB patients (males: 73.9%; mean age: 51.6 ± 10.3 years) who received two TE examinations and ELF scores. Among them, 252 (56.6%) and 193 (43.4%) patients were at intermediate and high HCC risk at first assessment defined by LSM-HCC score, respectively. Kaplan-Meier analysis showed that the changes in ELF score could stratify the HCC risk in both intermediate- and high-risk patients defined by LSM-HCC score (p < 0.001 for intermediate-risk group; p = 0.011 for high-risk group). Patients remained having mild or moderate fibrosis at both assessments had the lowest risk of HCC (4.0%), followed by patients with fibrosis regressed (11.3%; p = 0.014) during a mean follow-up of 163 months. Patients remained having or progressed to severe fibrosis were at highest risk of HCC (>20%). Consistent findings were demonstrated in patients at both intermediate and high risk of HCC defined by LSM-HCC score. Dynamic changes in ELF score provided additional value to LSM-HCC score for stratifying HCC risk in CHB patients.
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  • 文章类型: Journal Article
    背景:饮食干预和增加体力活动是治疗小儿非酒精性脂肪性肝病(NAFLD)的基石。不过,没有特定的饮食被证明是优越的,印度地中海饮食(IMD)在成人文学中显示出希望。因此,我们旨在比较IMD和标准热量限制饮食(CRD)在印度超重儿童和经活检证实NAFLD的青少年中的效果.
    方法:将39例连续活检证实的8至18岁的NAFLD儿童随机分为IMD或CRD180天,在基线和180天后评估各种参数(NCT05073588)。
    结果:共有34名受试者(IMD组18名,CRD组16名)完成了研究。受控衰减参数(CAP)值(作为肝脂肪变性的标志物;瞬时弹性成像)的降低显着增加(95%CI:4.2-73.4,p=0.042),与CRD组相比,IMD组的体重(95%CI:0.75-5.5,p=0.046)和体重指数(BMI)(95%CI:0.21-2.05,p=0.014)(但不在小儿NAFLD纤维化指数或PNFI中;作为肝纤维化的标志物).肝脏硬度测量,仅IMD组的血清胆固醇和低密度脂蛋白水平以及HOMA-IR降低(p<0.001)。我们的统计模型显示delta-Weight是与delta-CAP相关的唯一独立变量。
    结论:IMD和CRD都能改善人体的各种测量,临床,影像学和生化参数,但IMD在降低超重/肥胖NAFLD儿童180天以上的CAP值和体重/BMI方面优于CRD.
    BACKGROUND: Dietary interventions and increased physical activity are the cornerstones for management of the paediatric non-alcoholic fatty liver disease (NAFLD). Though, no specific diet has been proven superior, Indo-Mediterranean diet (IMD) has shown promise in adult literature. Thus, we aimed to compare the effect of IMD and a standard calorie-restricted diet (CRD) in Indian overweight children and adolescents with biopsy-proven NAFLD.
    METHODS: Thirty-nine consecutive biopsy-proven NAFLD children between the ages of 8 and 18 years were randomized into either IMD or CRD for 180 days, and various parameters were evaluated at baseline and then after 180 days (NCT05073588).
    RESULTS: A total of 34 subjects (18 in IMD and 16 in CRD group) completed the study. There was a significantly higher decrease in controlled attenuation parameter (CAP) values (as a marker of hepatic steatosis; on transient elastography) (95% CI: 4.2-73.4, p = 0.042), weight (95% CI: 0.75-5.5, p = 0.046) and body mass index (BMI) (95% CI: 0.21-2.05, p = 0.014) (but not in Pediatric NAFLD Fibrosis Index or PNFI; as a marker of hepatic fibrosis) in IMD group compared to the CRD group. Liver stiffness measurement, serum cholesterol and low-density lipoprotein levels and HOMA-IR decreased only in the IMD group (p < 0.001). Our statistical model showed that delta-Weight was the only independent variable associated with delta-CAP.
    CONCLUSIONS: Both IMD and CRD can improve the various anthropometric, clinical, imaging and biochemical parameters but IMD was superior to CRD in terms of reducing CAP values and weight/BMI over 180 days in overweight/obese NAFLD children.
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  • 文章类型: Journal Article
    背景:使用振动控制的瞬时弹性成像(VCTE)的肝脏硬度测量(LSM)正越来越多地用作预测静脉曲张的筛查工具。我们的目的是测试BavenoVII标准和其他LSM组合的实用性,血小板计数(PC),和脾硬度测量(SSM),以预测一组斯里兰卡代偿期晚期肝细胞疾病(cALCD)患者中静脉曲张的存在。
    方法:新诊断的Child-PughA级cALCD(非病毒,BMI<30)是前瞻性招募的。他们接受了胃镜检查。LSM和SSM采用振动控制的瞬时弹性成像(VCTE)(EchosensFibroScan502Touch;EchosensSA,巴黎,法国)由一位不知道内窥镜检查结果的操作员提供。灵敏度,特异性,阳性预测值(PPV),负预测值(NPV),以及不同BavenoVII标准预测静脉曲张和不同组合的LSM的准确性,SSM,和PC也被探索。
    结果:招募了一百七十四个人。平均年龄为61.4((95%CI:59.7-62.8)岁。共有110个人是男性,106有静脉曲张。我们的结果表明,三个BavenoVII标准的敏感性为61%,63%,42%,79%的特异性,77%,87%预测静脉曲张。单独使用SSM>30kPa和LSM>15kPa的敏感性为81%和75%,72%和83%的特异性,PPV为82%和87%,NPV分别为71%和67%,准确率为78%和78%,分别,预测静脉曲张。
    结论:BavenoVII标准在预测静脉曲张存在时敏感性低,但特异性高。然而,SSM>30kPa单独或与LSM>15kPa组合具有更好的灵敏度,特异性,PPV,NPV,预测静脉曲张的准确性。
    BACKGROUND: Liver stiffness measurement (LSM) using vibration-controlled transient elastography (VCTE) is being increasingly used as a screening tool to predict varices. Our aim was to test the utility of Baveno VII criteria and other combinations of LSM, platelet count (PC), and splenic stiffness measurement (SSM) to predict the presence of varices in a cohort of Sri Lankan patients with compensated advanced liver cell disease (cALCD).
    METHODS: Consecutive patients with newly diagnosed Child-Pugh class A cALCD (non-viral, BMI<30) were recruited prospectively. They underwent gastroscopy. LSM and SSM were taken using vibration-controlled transient elastography (VCTE) (Echosens FibroScan 502 Touch; Echosens SA, Paris, France) by a single operator who was unaware of endoscopy findings. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of different Baveno VII criteria to predict the varices and different combinations of LSM, SSM, and PC were also explored.
    RESULTS: One hundred and seventy-four individuals were recruited. The mean age was 61.4 ((95% CI: 59.7-62.8) years. A total of 110 individuals were males, and 106 had varices. Our results indicated that the three Baveno VII criteria had sensitivities of 61%, 63%, and 42%, and specificities of 79%, 77%, and 87% to predict varices. SSM>30kPa alone and in combination with LSM>15kPa had sensitivities of 81 and 75%, specificities of 72 and 83%, PPVs of 82 and 87%, NPVs of 71% and 67%, and accuracies of 78 and 78%, respectively, to predict varices.
    CONCLUSIONS: Baveno VII criteria had a low sensitivity but high specificity in predicting the presence of varices. However, SSM>30kPa alone or in combination with LSM>15kPa had better sensitivity, specificity, PPV, NPV, and accuracy in predicting varices.
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  • 文章类型: Journal Article
    背景:α-1抗胰蛋白酶缺乏症(AATD)是一种显性常染色体遗传性疾病,使患者易于发展为肺和/或肝脏疾病,和Pi*Z等位基因是最临床相关的突变。
    目的:为了评估临床参数和AATD表型的影响,特别是Pi*Z等位基因,肝纤维化。
    方法:横断面队列研究,包括连续的AATD患者,随访肺科或肝病会诊。
    结果:包括69名患者,49.3%的人具有Pi*MZ表型,10.1%的人具有Pi*ZZ表型。年龄≥55岁,诊断年龄≥41岁,诊断AAT<77mg/dL预测非酒精性脂肪性肝病纤维化评分(NFS),不排除晚期纤维化[曲线下面积(AUC)=0.840,P<0.001;AUC=0.836,P<0.001;AUC=0.681,P=0.025].年龄≥50岁和诊断年龄≥41岁预测中度至晚期纤维化的纤维化-4指数(AUC=0.831,P<0.001;AUC=0.795,P<0.001)。高血压患者,2型糖尿病(DM),血脂异常,代谢综合征,定期饮酒更可能发生NFS,但不排除晚期纤维化(P<0.001,P=0.002,P=0.008,P<0.001,P=0.033)。具有至少一个Pi*Z等位基因和2型DM的患者肝脏硬度测量值≥7.1kPa的可能性增加了8倍(P=0.040)。
    结论:AATD患者肝病的危险因素包括年龄≥50岁,诊断年龄≥41岁,代谢危险因素,经常饮酒,至少一个Pi*Z等位基因,诊断时的AAT值<77mg/dL。我们创建了一种用于AATD患者肝脏疾病筛查的算法,用于初级保健,选择那些转诊到肝病咨询。
    BACKGROUND: Alpha-1 antitrypsin deficiency (AATD) is a codominant autosomal hereditary condition that predisposes patients to the development of lung and/or liver disease, and Pi*Z allele is the most clinically relevant mutation.
    OBJECTIVE: To evaluate the impact of clinical parameters and AATD phenotypes, particularly the Pi*Z allele, in liver fibrosis.
    METHODS: Cross-sectional cohort study including consecutive patients with AATD followed in Pulmonology or Hepatology consultation.
    RESULTS: Included 69 patients, 49.3% had Pi*MZ phenotype and 10.1% Pi*ZZ. An age ≥ 55 years, age at diagnosis ≥ 41 years and AAT at diagnosis < 77 mg/dL predicted a nonalcoholic fatty liver disease fibrosis score (NFS) not excluding advanced fibrosis [area under the curve (AUC) = 0.840, P < 0.001; AUC = 0.836, P < 0.001; AUC = 0.681, P = 0.025]. An age ≥ 50 years and age at diagnosis ≥ 41 years predicted a fibrosis-4 index of moderate to advanced fibrosis (AUC = 0.831, P < 0.001; AUC = 0.795, P < 0.001). Patients with hypertension, type 2 diabetes mellitus (DM), dyslipidaemia, metabolic syndrome, and regular alcohol consumption were more likely to have a NFS not excluding advanced fibrosis (P < 0.001, P = 0.002, P = 0.008, P < 0.001, P = 0.033). Patients with at least one Pi*Z allele and type 2 DM were 8 times more likely to have liver stiffness measurement ≥ 7.1 kPa (P = 0.040).
    CONCLUSIONS: Risk factors for liver disease in AATD included an age ≥ 50 years, age at diagnosis ≥ 41 years, metabolic risk factors, regular alcohol consumption, at least one Pi*Z allele, and AAT value at diagnosis < 77 mg/dL. We created an algorithm for liver disease screening in AATD patients to use in primary care, selecting those to be referred to Hepatology consultation.
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  • 文章类型: Journal Article
    背景-实验室肝脏异常在心脏淀粉样变性中很常见;然而,他们对肝脏硬度的意义是未知的。这项研究的目的是调查患病率,临床意义,甲状腺素运载蛋白心脏淀粉样变性(ATTR-CA)肝硬度测量(LSM)异常的预后价值。方法-连续诊断为ATTR-CA并接受肝硬度评估的患者纳入研究。人口统计,临床,实验室,回顾性收集经胸超声心动图和肝脏硬度数据.LSM是通过瞬时弹性成像或超音速剪切成像获得的。根据10kPa阈值将患者队列分为两组。收集因心力衰竭住院和全因死亡发生的随访数据。结果-二百八十四例ATTR-CA患者-26例(9%)遗传性变异ATTR,包括258个(91%)野生型ATTR。分别在4例(15%)和98例(38%)ATTRv和ATTRwt患者中发现LSM超过10kPa(p=0.02)。在ATTRwt患者中,多变量分析后,高LSM在ATTR-CA晚期更常见,并且与心力衰竭住院风险增加相关,风险比为2.41[1.05-5.55](p=0.04).在NYHA1期患者中,28%的患者表现出与高NT-proBNP水平相关的高LSM。高LSM与NT-proBNP的整合和估计的肾小球滤过率提供了对患者生存率的更好估计。结论-高达36%的ATTR-CA患者发现超过10kPa的LSM,并且与CM的晚期和ATTRwt患者因心力衰竭住院的风险增加有关。
    Background - Laboratory liver anomalies are common in cardiac amyloidosis; however, their significance regarding liver stiffness is unknown. The aim of this study was to investigate the prevalence, clinical significance, and prognostic value of liver stiffness measurement (LSM) anomalies in transthyretin cardiac amyloidosis (ATTR-CA). Methods - Consecutive patients diagnosed with ATTR-CA who underwent liver stiffness assessment were included in the study. Demographic, clinical, laboratory, transthoracic echocardiography and liver stiffness data were retrospectively collected. LSM was obtained through either transient elastography or supersonic shear imaging. Patient cohort was divided in two groups according to a 10 kPa threshold. Follow up data were collected for the occurrence of hospitalization for heart failure and all-cause death. Results - Two hundred and eighty-four patients with ATTR-CA - 26 (9 %) hereditary variant ATTR, 258 (91 %) wild-type ATTR - were included. A LSM over 10 kPa was found in 4 (15 %) and 98 (38 %) patients with ATTRv and ATTRwt respectively (p = 0.02). Among patients with ATTRwt, high LSM was more frequent in advanced stages of ATTR-CA and was associated with increased risk of hospitalization for heart failure after multivariate analysis with a hazard ratio of 2.41 [1.05-5.55] (p = 0.04). Among patients with NYHA stage 1, 28 % presented high LSM associated with high NT-proBNP levels. Integration of high LSM with NT-proBNP and estimated glomerular filtration rate provided a better estimate of patient survival. Conclusion - LSM over 10 kPa is found in up to 36 % of patients with ATTR-CA and is associated with advanced stages of cardiomyopathy and increased risk of hospitalization for heart failure in ATTRwt patients.
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  • 文章类型: Journal Article
    建立可靠的非侵入性工具,以精确诊断临床上显着的肝纤维化(SF,≥F2)仍然是未满足的需求。我们旨在建立一个联合的影像组学-临床(CoRC)模型来分类SF,并探索CoRC模型对基于瞬时弹性成像的肝脏硬度测量的附加价值(FibroScan,TE-LSM)。这项回顾性研究招募了2015年1月至2021年12月在两个中心进行活检证实肝纤维化的595例患者。在中心1,2018年12月之前的患者被随机分为训练(276)和内部测试(118)组。其余的作为时间测试集(96)是时间无关的.从中心2收集另一个数据集(105)用于外部测试。使用来自基于深度学习(ResUNet)的MRI自动全肝分割(T2FS和延迟增强T1WI)的选定特征构建放射组学评分。CoRC模型将影像组学评分和相关临床变量与逻辑回归相结合,比较常规方法。通过接受者工作特征曲线下面积(AUC)评价诊断性能。研究了CoRC模型对TE-LSM的附加价值,考虑到坏死性炎症。CoRC模型的AUC为0.79(0.70,0.86),0.82(0.73,0.89),和0.81(0.72-0.91),在内部,FIB-4、APRI(所有p<0.05)优于FIB-4、APRI、temporal,和外部测试集,并保持G0-1子组(AUC范围,0.85-0.86;所有p<0.05)。联合CoRC-LSM模型的AUC为0.86(0.79-0.94),和0.81(0.72-0.90)在内部和时间集(p=0.01)。CoRC模型可用于分类SF,并可能为TE-LSM增加价值。
    Establishing reliable noninvasive tools to precisely diagnose clinically significant liver fibrosis (SF, ≥F2) remains an unmet need. We aimed to build a combined radiomics-clinic (CoRC) model for triaging SF and explore the additive value of the CoRC model to transient elastography-based liver stiffness measurement (FibroScan, TE-LSM). This retrospective study recruited 595 patients with biopsy-proven liver fibrosis at two centers between January 2015 and December 2021. At Center 1, the patients before December 2018 were randomly split into training (276) and internal test (118) sets, the remaining were time-independent as a temporal test set (96). Another data set (105) from Center 2 was collected for external testing. Radiomics scores were built with selected features from Deep learning-based (ResUNet) automated whole liver segmentations on MRI (T2FS and delayed enhanced-T1WI). The CoRC model incorporated radiomics scores and relevant clinical variables with logistic regression, comparing routine approaches. Diagnostic performance was evaluated by the area under the receiver operating characteristic curve (AUC). The additive value of the CoRC model to TE-LSM was investigated, considering necroinflammation. The CoRC model achieved AUCs of 0.79 (0.70, 0.86), 0.82 (0.73, 0.89), and 0.81 (0.72-0.91), outperformed FIB-4, APRI (all p < 0.05) in the internal, temporal, and external test sets and maintained the discriminatory power in G0-1 subgroups (AUCs range, 0.85-0.86; all p < 0.05). The AUCs of joint CoRC-LSM model were 0.86 (0.79-0.94), and 0.81 (0.72-0.90) in the internal and temporal sets (p = 0.01). The CoRC model was useful for triaging SF, and may add value to TE-LSM.
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  • 文章类型: Journal Article
    我们旨在测试Fibroscan-天冬氨酸氨基转移酶(FAST)评分的性能,非侵入性测试,在组织学诊断为NASH的患者队列中识别非酒精性脂肪性肝炎(NASH)和显着纤维化(NASH≥F2),使用≥0.35的截止值作为因子的规则。我们还将性能与肝脏硬度测量(LSM)≥8kPa和纤维化-4指数(FIB-4)≥1.3进行了比较,并试图确定风险因素以开发提高诊断准确性的模型。
    从2020-2021年确定了经组织学证实的NASH患者。人口统计信息,实验室数据,并收集LSM。计算FAST评分和FIB-4。除了FAST评分≥0.35与NASH+≥F2的准确组织学诊断相关外,还进行了单变量和反向进入多变量逻辑回归分析,以确定危险因素。使用接收器工作特征曲线下的面积评估辨别和总体准确性。
    使用临界值≥0.35的规则,以灵敏度进行FAST评分,特异性,负预测值,阳性预测值为96.4%,36.8%,77.7%,和81.8%,分别。年龄(P=.05)和FAST≥0.35(P=.001)在组织学上正确确定NASH≥F2。FAST+年龄模型优于FAST≥0.35(0.70,置信区间[CI]:0.55-0.84),LSM≥8kPa(0.72,CI:0.59-0.85),FIB-4≥1.3(0.73,CI:0.59-0.87),c统计量为0.78(CI:0.64-0.92)。
    规则截止值≥0.35的FAST评分表现良好(c统计量:0.70),并且当年龄纳入模型(0.78)时,在现实世界中检测NASH≥F2纤维化时,优于LSM和FIB-4。
    UNASSIGNED: We aimed to test the performance of the Fibroscan-aspartate aminotransferase (FAST) score, a noninvasive test, to identify nonalcoholic steatohepatitis (NASH) and significant fibrosis (NASH + ≥F2) in a cohort of patients with a histological diagnosis of NASH, using a cutoff of ≥0.35 as a rule in factor. We also compared performance to liver stiffness measurement (LSM) ≥8 kPa and the fibrosis-4 index (FIB-4) ≥1.3 and attempted to identify risk factors to develop a model for improving diagnostic accuracy.
    UNASSIGNED: Patients with histologically confirmed NASH were identified from 2020-2021. Demographic information, laboratory data, and LSM were collected. The FAST score and FIB-4 were calculated. Univariate and backward entry multivariate logistic regression analyses were performed to identify risk factors in addition to the FAST score ≥0.35 that are associated with an accurate histological diagnosis of NASH + ≥F2. Discrimination and overall accuracy were assessed using area under receiver operating characteristic curves.
    UNASSIGNED: Using a rule in cutoff of ≥0.35, the FAST score performed with a sensitivity, specificity, negative predictive value, and positive predictive value of 96.4%, 36.8%, 77.7%, and 81.8%, respectively. Age (P = .05) and FAST ≥0.35 (P = .001) correctly identified histologically confirmed NASH + ≥F2. The FAST + age model outperformed FAST ≥0.35 (0.70, confidence interval [CI]: 0.55-0.84), LSM ≥8 kPa (0.72, CI: 0.59-0.85), and FIB-4 ≥1.3 (0.73, CI: 0.59-0.87) with a c-statistic of 0.78 (CI: 0.64-0.92).
    UNASSIGNED: A FAST score with a rule cutoff of ≥0.35 performed well (c-statistic: 0.70) and was superior to LSM and FIB-4 when age was incorporated into the model (0.78) in detecting NASH + ≥F2 fibrosis in the real world.
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  • 文章类型: Journal Article
    背景:小儿肝移植(PLT)后移植物纤维化的发展仍然是一个主要问题,因为它可能导致移植物失败并最终导致移植物丢失。弹性成像是一种评估肝纤维化的非侵入性方法,但其在移植后环境中的作用尚不清楚。我们研究的目的是评估剪切波弹性成像(SWE)在PLT后肝纤维化的评估,包括肝裂受体。
    方法:我们回顾性分析了在2018年4月至2021年7月的研究期间接受肝活检和并发2D-SWE的PLT受者的数据。Spearman的相关性用于比较组织学纤维化分期与2D-SWE肝脏硬度测量(LSM)。进行AUROC分析以评估性能。采用单样本t检验将结果与健康儿童的参考值进行比较。
    结果:62例。29%显示组织学纤维化。2D-SWE的LSM在所有儿童中都是可行的,无论年龄或移植物类型如何。对于使用的所有三个评分系统,LSM和纤维化分期之间存在显着相关性(Ishak,p=0.003;METAVIR,p=0.005;LAF评分,p=0.003)。有胆道并发症史的患者肝脏硬度增加(p=0.015)。2D-SWE预测显著肝移植物纤维化的AUROC为0.81。PLT后无移植物纤维化的肝脏硬度高于健康受试者,但与没有纤维化的慢性肝病儿童相当。
    结论:2D-SWE可以可靠地检测出显著的肝移植物纤维化的儿童,即使是在肝脏分裂的接受者中。这项研究证明了PLT后纤维化分期的非侵入性工具的价值。2D-SWE有可能改善PLT后的长期结果,并减少监测肝活检的数量。但是弹性成像不能代替肝活检。
    BACKGROUND: The development of graft fibrosis after pediatric liver transplantation (PLT) remains a major concern as it can lead to graft failure and ultimately graft loss. Elastography is a non-invasive method to assess liver fibrosis, but its role in the posttransplant setting is unclear. The aim of our study was to evaluate shear wave elastography (SWE) in the assessment of liver fibrosis after PLT, including split-liver recipients.
    METHODS: We retrospectively analyzed data from PLT recipients who underwent surveillance liver biopsy and concurrent 2D-SWE during the study period from April 2018 to July 2021. Spearman\'s correlation was used to compare histologic fibrosis stages with liver stiffness measurements (LSM) by 2D-SWE. AUROC analysis was performed to evaluate the performance. One sample t-test was used to compare results with reference values of healthy children.
    RESULTS: 62 cases were included. 29% showed histologic fibrosis. LSM by 2D-SWE were feasible in all children regardless of age or graft type. There was a significant correlation between LSM and fibrosis stage for all three scoring systems used (Ishak, p = 0.003; METAVIR, p = 0.005; LAF Score, p = 0.003). Patients with a history of biliary complications had increased liver stiffness (p = 0.015). The AUROC of 2D-SWE for predicting significant liver graft fibrosis was 0.81. Liver stiffness after PLT without graft fibrosis was higher than in healthy subjects, but comparable to that in children with chronic liver disease without fibrosis.
    CONCLUSIONS: 2D-SWE can reliably detect children with significant liver graft fibrosis, even in split-liver recipients. This study demonstrates the value of a non-invasive tool for fibrosis staging after PLT. 2D-SWE has the potential to improve long-term outcomes after PLT and to reduce the number of surveillance liver biopsies. But elastography is not a substitute for liver biopsy.
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  • 文章类型: Journal Article
    背景:在患有门静脉高压症(PHT)的儿童和青少年中,非肝硬化门静脉纤维化(NCPF)与慢性肝病(CLD)的区别具有挑战性,尤其是在肝硬度测量(LSM)和肝静脉压力梯度较高的情况下。本研究的目的是评估脾刚度测量(SSM)/LSM比在NCPF诊断中的诊断准确性。
    方法:从2019年1月至2023年12月,前瞻性招募了6个月至18岁的儿童和青少年PHT(CLD和NCPF)。SSM和LSM的瞬态弹性成像(TE),上消化道内镜(UGIE),肝活检/经颈静脉肝活检,腹部成像,并进行了实验室评估。评估了TE参数对NCPF和CLD诊断的关系。使用RStudio-4.2.2统计软件应用接收器工作特性(ROC)统计。
    结果:评估了147例CLD患者和27例NCPF患者。中位年龄为10.0(IQR2.4-14.0)岁;68.4%为男性。SSM/LSM比值的AUROC(0.992,95CI0.982-1.0001)优于LSM(0.945,95CI0.913-0.977)和SSM(0.626,95CI0.258-0.489)诊断NCPF。SSM/LSM比率截止3.67预测NCPF,具有出色的灵敏度(100%),特异性(95.9%),和诊断准确率(95.91%)。SSM/LSM比值的AUROC表现优异,优于亚组中的其他TE参数,即,LSM在10和20kPa之间(0.982,95CI0.947-1.000),无临床意义的静脉曲张(CSV)(1.000,95CI1.000-1.000)和CSV(0.993,95CI0.983-1.000)。在使用McNemar检验区分NCPF和CLD方面,SSM/LSM比值的诊断性能优于LSM(p=0.01)。
    结论:SSM/LSM比率是区分NCPF和CLD的极好工具。
    BACKGROUND: Differentiation of Non-cirrhotic Portal Fibrosis (NCPF) from chronic liver disease (CLD) in children and adolescents with portal hypertension (PHT) is challenging especially in cases where liver stiffness measurement (LSM) and hepatic venous pressure gradient are higher. This objective of the current study was to evaluate the diagnostic accuracy of the splenic stiffness measurement (SSM)/LSM ratio in the diagnosis of NCPF.
    METHODS: From January 2019 to December 2023, consecutive children and adolescents of 6 months to 18 years of age with PHT (CLD and NCPF) were prospectively enrolled. Transient elastography (TE) for SSM and LSM, upper gastrointestinal endoscopy (UGIE), liver biopsy/trans-jugular liver biopsy, abdominal imaging, and laboratory evaluation were done. The relationship of TE parameters for diagnosis of NCPF and CLD was evaluated. Receiver-operating characteristic (ROC) statistics were applied using R Studio-4.2.2 statistical software.
    RESULTS: One hundred and forty seven with CLD and 27 patients with NCPF were evaluated. Median age was 10.0 (IQR 2.4-14.0) years; 68.4% were males. The AUROC of SSM/LSM ratio was better (0.992, 95%CI 0.982-1.0001) than LSM (0.945, 95%CI0.913-0.977) and SSM (0.626, 95%CI0.258-0.489) for the diagnosis of NCPF. SSM/LSM ratio cut-off of 3.67 predicted NCPF with an excellent sensitivity (100%), specificity (95.9%), and diagnostic accuracy (95.91%). The AUROC of SSM/LSM ratio was excellent and outperformed other TE parameters in the subgroups, i.e., LSM between 10 and 20 kPa (0.982, 95%CI 0.947-1.000), without clinically significant varices (CSV) (1.000, 95%CI 1.000-1.000) and with CSV (0.993, 95%CI 0.983-1.000). Diagnostic performance of SSM/LSM Ratio was better than LSM for discriminating NCPF from CLD using McNemar test (p = 0.01).
    CONCLUSIONS: The SSM/LSM ratio is an excellent tool in differentiating NCPF from CLD.
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  • 文章类型: Journal Article
    代谢功能障碍相关的脂肪变性肝病(MASLD)显著影响2型糖尿病(T2DM)患者,目前的非侵入性评估方法对未来纤维化进展的预测能力有限。这项研究旨在开发一种增强的深度学习(DL)模型,该模型将超声弹性成像图像与临床数据集成在一起。在最初没有肝纤维化迹象的患有MASLD的T2DM患者中,细化纤维化进展的预测。
    我们招募了946名没有晚期纤维化的糖尿病MASLD患者,通过低于6.5kPa的初始肝脏硬度测量(LSM)证实。患者被分为671个训练数据集和275个测试数据集。肝脏剪切波弹性成像(SWE)图像测量肝脏硬度,根据进展对参与者进行分类。训练了结合SWE图像和临床数据的DL集成模型(DI模型),并将其预测性能与单个图像和表格模型进行了比较。以及测试数据集上的逻辑回归模型。
    18.1%的患者在三年内观察到纤维化进展。在培训阶段,DI模型优于其他模型,通过交叉验证,实现了0.161的最低验证损失和0.933的最高准确性。在测试阶段,它证明了接收器工作特性和精确召回曲线的AUC分别为0.884和0.903,分别,显然优于其他型号。Shapley分析确定了BMI,LSM,和糖化血红蛋白是关键预测因子。
    DI模型显着增强了对糖尿病MASLD患者未来纤维化进展的预测,证明结合临床和影像学数据对早期诊断和干预的益处。
    UNASSIGNED: Metabolic dysfunction-associated steatotic liver disease (MASLD) significantly impacts patients with type 2 diabetes mellitus (T2DM), where current non-invasive assessment methods show limited predictive power for future fibrotic progression. This study aims to develop an enhanced deep learning (DL) model that integrates ultrasound elastography images with clinical data, refining the prediction of fibrotic progression in T2DM patients with MASLD who initially exhibit no signs of hepatic fibrosis.
    UNASSIGNED: We enrolled 946 diabetic MASLD patients without advanced fibrosis, confirmed by initial liver stiffness measurements (LSM) below 6.5 kPa. Patients were divided into a training dataset of 671 and a testing dataset of 275. Hepatic shear wave elastography (SWE) images measured liver stiffness, classifying participants based on progression. A DL integrated model (DI-model) combining SWE images and clinical data was trained and its predictive performance compared with individual Image and Tabular models, as well as a logistic regression model on the testing dataset.
    UNASSIGNED: Fibrotic progression was observed in 18.1 % of patients over three years. During the training phase, the DI-model outperformed other models, achieving the lowest validation loss of 0.161 and highest accuracy of 0.933 through cross-validation. In the testing phase, it demonstrated robust discrimination with AUCs of 0.884 and 0.903 for the receiver operating characteristic and precision-recall curves, respectively, clearly outperforming other models. Shapley analysis identified BMI, LSM, and glycated hemoglobin as critical predictors.
    UNASSIGNED: The DI-model significantly enhances the prediction of future fibrotic progression in diabetic MASLD patients, demonstrating the benefit of combining clinical and imaging data for early diagnosis and intervention.
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