Sonography

超声检查
  • 文章类型: Journal Article
    纤维腺瘤是一种常见的良性乳腺疾病,影响所有年龄段的女性。早期诊断可以大大提高治疗效果并减轻相关疼痛。计算机辅助诊断(CAD)具有提高诊断准确性和效率的巨大潜力。然而,其在超声检查中的应用是有限的。提出了一种利用广阔的感受野和局部信息学习的网络,用于超声检查中乳腺纤维腺瘤的准确分割。该体系结构包括分层注意融合模块,通过通道和像素视角进行本地信息学习,和残差大内核模块,它利用多尺度大核卷积进行全局信息学习。此外,在两个模块中都包含了多尺度特征融合,以增强我们网络的稳定性。最后,结合了能量函数和数据增强方法,以微调医学图像的低级特征并改善数据增强。使用我们的本地临床数据集和公共数据集来评估我们模型的性能。在临床和公共数据集上实现了93.93%和86.06%的平均像素精度(MPA)和88.16%和73.19%的平均交集(MIOU)。分别。与SegFormer等最先进的方法相比,它们得到了显着改善(MPA中为89.75%和78.45%,MIOU中为83.26%和71.85%,分别)。提出的特征提取策略,将局部像素级学习与广泛的全球信息感知接受场相结合,展示了优秀的特征学习能力。由于这种强大而独特的局部全局特征提取能力,我们的深度网络在超声检查中实现了乳腺纤维腺瘤的优越分割,这在早期诊断中可能是有价值的。
    Fibroadenoma is a common benign breast disease that affects women of all ages. Early diagnosis can greatly improve the treatment outcomes and reduce the associated pain. Computer-aided diagnosis (CAD) has great potential to improve diagnosis accuracy and efficiency. However, its application in sonography is limited. A network that utilizes expansive receptive fields and local information learning was proposed for the accurate segmentation of breast fibroadenomas in sonography. The architecture comprises the Hierarchical Attentive Fusion module, which conducts local information learning through channel-wise and pixel-wise perspectives, and the Residual Large-Kernel module, which utilizes multiscale large kernel convolution for global information learning. Additionally, multiscale feature fusion in both modules was included to enhance the stability of our network. Finally, an energy function and a data augmentation method were incorporated to fine-tune low-level features of medical images and improve data enhancement. The performance of our model is evaluated using both our local clinical dataset and a public dataset. Mean pixel accuracy (MPA) of 93.93% and 86.06% and mean intersection over union (MIOU) of 88.16% and 73.19% were achieved on the clinical and public datasets, respectively. They are significantly improved over state-of-the-art methods such as SegFormer (89.75% and 78.45% in MPA and 83.26% and 71.85% in MIOU, respectively). The proposed feature extraction strategy, combining local pixel-wise learning with an expansive receptive field for global information perception, demonstrates excellent feature learning capabilities. Due to this powerful and unique local-global feature extraction capability, our deep network achieves superior segmentation of breast fibroadenoma in sonography, which may be valuable in early diagnosis.
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  • 文章类型: Journal Article
    肩袖损伤和撕裂是肩部疼痛和功能障碍的常见原因,需要准确的诊断方法来指导临床决策。这项研究评估了三维(3D)肩部超声检查在识别肩袖损伤和撕裂模式中的诊断实用性。
    对七个电子数据库进行全面搜索,其中包括科克伦图书馆,Embase,PubMed,科克伦图书馆,中国生物医学(CBM)数据库,CNKI,万方,VIP数据库这些数据库用于检索评估3D肩部超声检查对识别肩袖损伤和撕裂模式的诊断价值的文章。根据灵敏度评估三维肩关节超声检查的有效性,特异性,正似然比(PLR),负似然比(NLR),和诊断比值比(DOR)。对于每个参数,计算95%置信区间.此外,构建了概括的接受者工作特征曲线(SROC),允许对诊断准确性进行全面评估,这反映在SROC曲线下的面积(AUC)中。
    筛选了8,508个确定有资格纳入荟萃分析的9个文献,共366名患者。检测任何肩袖撕裂的分析显示灵敏度为0.97,特异性为0.87,DOR为90.03,AUC为0.98。此外,3D肩部超声检查在检测全厚度和部分厚度肩袖撕裂方面显示出令人满意的准确性(灵敏度:0.92vs.0.83,特异性:0.94vs.097,AUC:0.96vs.0.95)。
    这项研究表明,三维超声检查对于检测肩袖撕裂具有令人满意的准确性。
    UNASSIGNED: Rotator cuff injuries and tears are common causes of shoulder pain and dysfunction, necessitating accurate diagnostic methods to guide clinical decision-making. This study evaluates the diagnostic utility of three-dimensional (3D) shoulder sonography in identifying rotator cuff injury and tear patterns.
    UNASSIGNED: A comprehensive search across seven electronic databases, which included Cochrane Library, Embase, PubMed, Cochrane Library, China Biology Medicine (CBM) database, CNKI, Wanfang, and VIP database. These databases were utilized to retrieve articles that assess the diagnostic value of 3D shoulder sonography for identifying rotator cuff injuries and tear patterns. The effectiveness of 3D shoulder sonography was assessed in terms of sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), and diagnostic odds ratio (DOR). For each parameter, the 95% confidence intervals were calculated. Additionally, summary receiver operating characteristic curves (SROCs) were constructed, allowing for a comprehensive evaluation of diagnostic accuracy, which is reflected in the area under the SROC curve (AUC).
    UNASSIGNED: Screening of 8,508 identified nine literatures eligible for inclusion in the meta-analysis, encompassing a total of 366 patients. The analysis of detecting any rotator cuff tear revealed a sensitivity of 0.97 and specificity of 0.87, yielding a DOR of 90.03 and an AUC of 0.98. Furthermore, 3D shoulder sonography demonstrated satisfactory accuracy in detecting both full and partial-thickness rotator cuff tears (Sensitivity: 0.92 vs. 0.83, specificity: 0.94 vs. 097, and AUC: 0.96 vs. 0.95).
    UNASSIGNED: This study indicates that three-dimensional sonography has satisfied accuracy for detecting rotator cuff tears.
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  • 文章类型: Journal Article
    目的:本研究旨在探讨使用高频超声检查作为检测早期和长期RA患者手足关节炎症和破坏性变化的工具。
    方法:本研究采用前瞻性队列设计,纳入162例符合美国风湿病学会/欧洲抗风湿联盟(ACR/EULAR)分类标准的类风湿关节炎(RA)患者。根据疾病持续时间将患者分为两组:第1组(n=74)包括疾病持续时间长达2年的患者,或早期式(ERA;),第2组(n=88)由病程超过2年的患者组成,或长期持久的351(LtRA)。所有患者都接受了关节的临床评估,以及射线照相和关节超声检查,在研究开始时,在6个月和12个月后再次。
    结果:在一般患者组中,与临床检查相比,超声检查显示手部关节滑膜炎的征象更频繁(66%)(56%的关节肿胀[NSJ]和55%的关节疼痛[NPJ],P<.01)。经过6个月的治疗,12%的患者实现了US完全缓解,24%实现了US部分缓解。
    结论:在RA综合诊断范围内,手和脚关节的关节超声检查,利用灰度和功率多普勒的组合,在检测早期RA方面可能超过射线照相术。该方法允许更准确地评估疾病活动性和进展率。
    OBJECTIVE: This study aims to investigate the use of high-frequency sonography as a tool for detecting inflammatory and destructive changes in the hand and foot joints of patients with early and long-term RA.
    METHODS: This study employs a prospective cohort design involving 162 patients diagnosed with Rheumatoid arthritis (RA) who meet the American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria. Patients were divided into two groups based on disease duration: Group 1 (n = 74) included patients with a disease duration of up to 2 years, or early РА (ERA;), Group 2 (n = 88) consisted of patients with a disease duration exceeding 2 years, or long-term persistent РА (LtRA). All patients underwent a clinical assessment of their joints, as well as radiography and arthrosonography, at the beginning of the study and again at 6 and 12 months later.
    RESULTS: In the general group of patients, ultrasound examination revealed signs of synovitis in the joints of the hands more frequently (66%) compared with clinical examination (56% by a number of swollen joints [NSJ] and 55% by a number of painful joints [NPJ], P < .01). After 6 months of treatment, 12% of the patients achieved full US remission and 24% achieved partial US remission.
    CONCLUSIONS: Within the scope of comprehensive RA diagnostics, arthrosonography of the joints of the hands and feet, utilizing a combination of greyscale and power Doppler, may surpass radiography in detecting early RA. This method allows for a more accurate assessment of disease activity and progression rates.
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  • 文章类型: Journal Article
    聚焦超声消融手术(FUAS)中超声检查的敏感性监测是有限的(在子宫肌瘤成功凝固的约50%中没有过度回声)。需要一种更准确和更灵敏的方法。
    发现聚焦超声(FUS)换能器在测试模式(短脉冲持续时间和低功率)下的回波幅度与离体凝血相关。为了进一步评估其凝血预测能力,进行了体内实验。肝脏,肾,使用临床FUAS设置治疗三只成年山羊的腿部肌肉,收集FUS前后FUS换能器的回波幅度和超声灰度。在第7天,动物被人道地处死,并解剖处理过的组织以暴露病变。对回波波幅变化和病变面积进行统计学分析,凝血预测指标也是如此。
    FUS换能器的回波幅度变化与肝脏中的病变区域密切相关(R=0.682)。其预测精度(94.4%与50%),灵敏度(92.9%与35.7%),和负面预测(80%与30.8%)优于超声检查,但特异性相似(80%与100%)和阳性预测(100%与100%)。此外,组织深度与病变面积之间的相关性不好(|R|<0.2)。肾脏和腿部肌肉的预测表现相似。
    FUS回波幅度对FUAS后的组织特性及其变化敏感。它们在评估和预测FUAS结果方面敏感可靠。
    UNASSIGNED: Monitoring sensitivity of sonography in focused ultrasound ablation surgery (FUAS) is limited (no hyperechoes in ∼50% of successful coagulation in uterine fibroids). A more accurate and sensitive approach is required.
    UNASSIGNED: The echo amplitudes of the focused ultrasound (FUS) transducer in a testing mode (short pulse duration and low power) were found to correlate with the ex vivo coagulation. To further evaluate its coagulation prediction capabilities, in vivo experiments were carried out. The liver, kidney, and leg muscles of three adult goats were treated using clinical FUAS settings, and the echo amplitude of the FUS transducer and grayscale in sonography before and after FUAS were collected. On day 7, animals were sacrificed humanely, and the treated tissues were dissected to expose the lesion. Echo amplitude changes and lesion areas were analyzed statistically, as were the coagulation prediction metrics.
    UNASSIGNED: The echo amplitude changes of the FUS transducer correlate well with the lesion areas in the liver (R = 0.682). Its prediction in accuracy (94.4% vs. 50%), sensitivity (92.9% vs. 35.7%), and negative prediction (80% vs. 30.8%) is better than sonography, but similar in specificity (80% vs. 100%) and positive prediction (100% vs. 100%). In addition, the correlation between tissue depth and the lesion area is not good (|R| < 0.2). Prediction performances in kidney and leg muscles are similar.
    UNASSIGNED: The FUS echo amplitudes are sensitive to the tissue properties and their changes after FUAS. They are sensitive and reliable in evaluating and predicting FUAS outcomes.
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  • 文章类型: Journal Article
    背景:乳腺纤维腺瘤引起了重大的健康问题,尤其是年轻女性。计算机辅助诊断已成为早期和准确检测各种实体瘤的有效和高效方法。乳腺纤维腺瘤的自动分割是重要的,并可能减少不必要的活检,但由于图像质量低且超声检查中存在各种伪影,因此具有挑战性。
    方法:人类学习涉及模块化完整的信息,然后以直观有效的方式通过密集的上下文连接将其集成。这里,引入了人类学习范式,通过两个连续的阶段来指导神经网络:特征碎片阶段和信息聚合阶段。为了优化这个范例,根据超声检查的特点,调整了三种碎片注意力机制和信息聚集机制。评估是使用本地数据集进行的,该数据集包括来自中国遂宁市中心医院30名患者的600张乳腺超声图像。此外,使用由来自Dataset_BUSI和DatasetB的246张乳腺超声图像组成的公共数据集来进一步验证所提出的网络的鲁棒性.通过Dice相似系数(DSC)评估分割性能和推理速度,Hausdorff距离(HD),和训练时间,然后与基线模型(TransUNet)和其他最先进的方法进行比较。
    结果:大多数由人类学习范式指导的模型在本地数据集上显示出改进的分割效果,其中最好的一个(包含C3ECA和LogSparseAttention模块)在DSC中优于基线模型0.76%,在HD中优于3.14mm,并将训练时间减少了31.25%。它在公共数据集上的鲁棒性和效率也得到了证实,在DSC方面超过TransUNet0.42%,在HD方面超过5.13mm。
    结论:我们提出的人类学习范式已经证明了在公共和本地数据集中超声乳腺纤维腺瘤分割的优越性和效率。这种直观有效的学习范式作为神经网络的核心,在医学图像处理中具有巨大的潜力。
    BACKGROUND: Breast fibroadenoma poses a significant health concern, particularly for young women. Computer-aided diagnosis has emerged as an effective and efficient method for the early and accurate detection of various solid tumors. Automatic segmentation of the breast fibroadenoma is important and potentially reduces unnecessary biopsies, but challenging due to the low image quality and presence of various artifacts in sonography.
    METHODS: Human learning involves modularizing complete information and then integrating it through dense contextual connections in an intuitive and efficient way. Here, a human learning paradigm was introduced to guide the neural network by using two consecutive phases: the feature fragmentation stage and the information aggregation stage. To optimize this paradigm, three fragmentation attention mechanisms and information aggregation mechanisms were adapted according to the characteristics of sonography. The evaluation was conducted using a local dataset comprising 600 breast ultrasound images from 30 patients at Suining Central Hospital in China. Additionally, a public dataset consisting of 246 breast ultrasound images from Dataset_BUSI and DatasetB was used to further validate the robustness of the proposed network. Segmentation performance and inference speed were assessed by Dice similarity coefficient (DSC), Hausdorff distance (HD), and training time and then compared with those of the baseline model (TransUNet) and other state-of-the-art methods.
    RESULTS: Most models guided by the human learning paradigm demonstrated improved segmentation on the local dataset with the best one (incorporating C3ECA and LogSparse Attention modules) outperforming the baseline model by 0.76% in DSC and 3.14 mm in HD and reducing the training time by 31.25%. Its robustness and efficiency on the public dataset are also confirmed, surpassing TransUNet by 0.42% in DSC and 5.13 mm in HD.
    CONCLUSIONS: Our proposed human learning paradigm has demonstrated the superiority and efficiency of ultrasound breast fibroadenoma segmentation across both public and local datasets. This intuitive and efficient learning paradigm as the core of neural networks holds immense potential in medical image processing.
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  • 文章类型: Journal Article
    由于图像质量低且存在伪影,在超声检查中分割乳腺肿瘤具有挑战性。放射科医师的研究和诊断技能与人工智能相结合,以建立基于临床学习的深度学习网络,以稳健地提取和描绘乳腺纤维腺瘤的特征。空间局部特征对比(SLFC)模块捕获整体肿瘤轮廓,而通道递归门控注意(CRGA)模块通过高维信息交互增强边缘感知。此外,应用全尺度特征融合和增强深度监督,提高模型稳定性和性能。为了实现更平滑的边界,我们引入了一种新的损失函数(cosh-smooth),可以惩罚和微调肿瘤边缘。我们的数据集包括1016张带有标记口罩的乳腺纤维腺瘤的临床超声图像,除了公开可用的246个数据集之外。使用骰子相似性系数(DSC)和平均交集(MIOU)评估分割性能。大量实验表明,我们提出的MS-CFNet优于最先进的方法。与作为基准模型的TransUNet相比,MS-CFNet在DSC中提高了1.47%,在MIOU中提高了2.56%。MS-CFNet的有希望的结果归因于放射科医生的临床诊断程序和仿生思维的整合,增强网络有效识别和分割乳腺纤维腺瘤的能力。
    Segmenting breast tumors in ultrasonography is challenging due to the low image quality and presence of artifacts. Radiologists\' studying and diagnosis skills are integrated with artificial intelligence to establish a clinical learning-based deep learning network in order to robustly extract and delineate features of breast fibroadenoma. The spatial local feature contrast (SLFC) module captures overall tumor contours, while the channel recursive gated attention (CRGA) module enhances edge perception through high-dimensional information interaction. Additionally, full-scale feature fusion and enhanced deep supervision are applied to improve model stability and performance. To achieve smoother boundaries, we introduce a new loss function (cosh-smooth) that penalizes and finely tunes tumor edges. Our dataset comprises 1016 clinical ultrasound images of breast fibroadenoma with labeled masks, alongside a publicly available dataset of 246 ones. Segmentation performance is evaluated using the Dice similarity coefficient (DSC) and mean intersection over union (MIOU). Extensive experiments demonstrate that our proposed MS-CFNet outperforms state-of-the-art methods. Compared to TransUNet as a baseline model, MS-CFNet improves by 1.47% in DSC and 2.56% in MIOU. The promising result of MS-CFNet is attributed to the integration of radiologists\' clinical diagnosis procedure and the bionic mindset, enhancing the network\'s ability to recognize and segment breast fibroadenomas effectively.
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  • 文章类型: Journal Article
    引产(IOL)是一种常见的产科方法,用于开始或鼓励子宫收缩以实现阴道分娩。建议在继续怀孕时对母亲或婴儿可能更危险。不同的超声检查措施,如宫颈长度,已被调查为IOL结局的可能预测因子。这项荟萃分析旨在评估超声测量在预期成功IOL中的准确性。
    该研究对三个数据库(PubMed,Scopus,和WebofScience),直到2023年3月4日,以发现以英文发表的临床研究报告了不同的超声检查宫颈测量值及其预测IOL结局的能力。所选研究根据报告的指标类型进行分层,进行荟萃分析,以确定诱导成功和失败的最佳指标.使用诊断准确性研究质量评估-2(QUADAS-2)方法评估偏倚风险和对纳入研究适用性的担忧。
    这项研究分析了9338例患者的57项研究。宫颈长度对预测成功IOL中等有效,合并敏感性(SN)和特异性(SP)分别为0.67和0.70。然而,宫颈长度的合并SN和SP分别为0.70和0.61,用于预测IOL失败.发现颈椎后角具有较高的合并SN和SP,分别为0.79和0.73,以预测成功的IOL。胎儿头-会阴距离在合并SN的情况下表现出中等准确性,SP,正似然比,负似然比,诊断赔率比,和曲线下面积分别为0.58、0.66、1.95、0.36、5.33和0.9992,用于预测成功的IOL。
    与宫颈长度相比,胎儿头-会阴距离是成功IOL的最有效预测指标,只有中等的预测能力。宫颈长度的缩短不是成功IOL的有用指标。另一方面,颈椎后角是预测诱导失败的最可靠因素。该研究的发现有助于制定更有效的IOL管理策略。
    UNASSIGNED: Induction of labor (IOL) is a common obstetric approach to start or encourage uterine contractions to achieve a vaginal birth. It is recommended when continuing the pregnancy may be more dangerous for the mother or baby. Different ultrasonographic measures, such as cervical length, have been investigated as possible predictors of the outcomes of IOL. This meta-analysis aimed to assess the accuracy of ultrasound measurements in anticipating successful IOL.
    UNASSIGNED: The study conducted a thorough search on three databases (PubMed, Scopus, and Web of Science) until 04 March 2023, to find clinical studies published in English that reported different sonographic cervical measures and their ability to predict IOL outcomes. The chosen studies were stratified based on the type of indicator reported, and a meta-analysis was conducted to determine the best indicator for both successful and failed induction. The risk of bias and concerns about the applicability of the included studies was evaluated using the Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) method.
    UNASSIGNED: This study analyzed 57 studies with 9,338 patients. Cervical length is moderately effective in predicting successful IOL, with pooled sensitivity (SN) and specificity (SP) of 0.67 and 0.70, respectively. However, cervical length had a pooled SN and SP of 0.70 and 0.61 for predicting failed IOL. The posterior cervical angle was found to have a higher pooled SN and SP of 0.79 and 0.73 for predicting successful IOL. Fetal head-perineum distance demonstrated moderate accuracy with a pooled SN, SP, positive likelihood ratio, negative likelihood ratio, diagnostic odds ratio, and area under the curve of 0.58, 0.66, 1.95, 0.36, 5.33, and 0.9992, respectively, for predicting successful IOL.
    UNASSIGNED: Fetal head-perineum distance was the most effective predictor for successful IOL compared to cervical length, which only had a moderate predictive ability. Shortening of cervical length was not a useful indicator for successful IOL. On the other hand, the posterior cervical angle was the most reliable factor for predicting failed induction. The study\'s findings can aid in developing more effective management strategies for IOL.
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  • 文章类型: Journal Article
    这项研究检查了多普勒超声成像协议的实施,以评估神经内血流,在正中神经内,在健康的个体中。
    共检查了176名参与者,这涉及对收集的图像进行717次回顾性观察。评估了已实施的成像方案,对收集的数据进行清理,并检查其保真度和有效性.
    大部分缺失证据(11%-35%)mid,和远端腕管位置。只有四分之一的有神经内血流证据的病例有最强烈的能量多普勒视频剪辑证据,其中只有四分之三有效。该研究确定了改进成像协议以减少丢失数据并提高数据质量的潜在领域。
    这项研究证明了标准化成像协议的重要性,以指导多普勒图像的超声采集,并为数据质量的潜在问题提供了重要见解。这些建议有可能帮助未来的研究以更严格和可靠的方式评估健康人群的神经内血流。将研究的建议纳入标准化方案,有可能提高腕管综合征的诊断准确性并改善诊断和治疗。
    UNASSIGNED: This study examined the implementation of a Doppler sonography imaging protocol to assess intraneural blood flow, within the median nerve, in healthy individuals.
    UNASSIGNED: A total of 176 participants were examined, and this involved 717 retrospective observations of the images collected. The implemented imaging protocol was assessed, and the data that were collected were cleaned and checked for fidelity and validity.
    UNASSIGNED: A large percentage of missing evidence (11%-35%) across proximal, mid, and distal carpal tunnel locations. Only a quarter of cases with evidence of intraneural blood flow had the strongest evidence of a power Doppler video clip, of which only three-quarters were valid. The study identified potential areas for improving the imaging protocol to reduce missing data and improve data quality.
    UNASSIGNED: This study demonstrates the significance of a standardized imaging protocol to guide the sonographic acquisition of Doppler images and provides important insights into potential issues with data quality. The recommendations have the potential to help future studies assess intraneural blood flow in healthy populations in a more rigorous and reliable way. Incorporating the study\'s recommendations into a standardized protocol, there is potential to enhance the diagnostic accuracy of carpal tunnel syndrome and improve diagnosis and treatment.
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  • 文章类型: Meta-Analysis
    目的:对颅脑外伤(TBI)患者颅内压升高的及时诊断和处理可显著降低死亡率。视神经鞘直径(ONSD)的超声检查被认为是潜在的,非侵入性,和评估ICP的有效方法。我们对ONSD超声检测和侵入性ICP监测方法进行了系统的回顾和荟萃分析,以比较和评估ONSD超声检测方法对TBI患者颅内高压(IH)的诊断准确性。
    方法:我们搜索了WebofScience,PubMed,和Embase数据库,以评估ONSD超声检查预测ICP增加的诊断准确性。两位作者独立提取了收集到的数据。同时,使用QUADAS-2工具评估各项研究的偏倚风险,并对诊断的准确性和特异性进行随机效应荟萃分析,并计算汇总估计。
    结果:纳入了512例患者的10项研究。ONSD超声检查对IH的诊断准确性显示为0.85的合并灵敏度(95%置信区间[CI],0.79-0.89)和特异性为0.88(95%CI,0.80-0.93),与TBI患者的侵入性ICP监测标准进行比较。
    结论:ONSD超声检查可能是预测成人TBI患者ICP升高的有用方法。需要进一步的临床研究来确认ONSD超声检查的诊断价值。
    Timely diagnosis and management of elevated intracranial pressure (ICP) in patients with traumatic brain injury (TBI) can significantly reduce mortality rates. Ultrasound examination of the optic nerve sheath diameter (ONSD) is considered a potential, noninvasive, and effective method for assessing ICP. We conducted a systematic review and meta-analysis of ONSD ultrasound detection and invasive ICP monitoring methods to compare and evaluate the diagnostic accuracy of ONSD ultrasound detection methods for intracranial hypertension (IH) in patients with TBI.
    We searched the Web of Science, PubMed, and Embase databases to assess the diagnostic accuracy of ONSD sonography for predicting increased ICP. The 2 authors independently extracted the collected data. Simultaneously, the QUADAS-2 tool was used to evaluate the bias risk of each study and conducted random-effects meta-analyses for the accuracy and specificity of diagnosis, and calculated pooled estimates.
    Ten studies with 512 patients were included. The diagnostic accuracy of ONSD sonography for IH was revealed as a pooled sensitivity of 0.85 (95% confidence interval [CI], 0.79-0.89) and specificity of 0.88 (95% CI, 0.80-0.93), compared with the invasive ICP monitoring standard for patients with TBI.
    ONSD sonography may be a useful method for predicting increased ICP in adult patients with TBI. Further clinical studies are required to confirm the diagnostic value of ONSD sonography.
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  • 文章类型: Journal Article
    目的:评估孕早期终止妊娠后保留产物(RPOC)的发生,并通过经阴道超声(TVUS)检查评估保留产物的血管信号。
    方法:采用TVUS检查对终止妊娠后的患者进行回顾性队列研究。在RPOC的情况下,确定了三种血管信号尺度:1型,无或少量,点流信号;类型2,中等数量,带状流量信号;类型3,富量,圆周状的流量信号。血管信号和PAS分期之间的相关性是通过超声检查和组织病理学发现提出的。
    结果:三种血管模式在非RPOC以及有和没有PAS的RPOC患者中分布不同:非RPOC和RPOC的1型血管信号检出率分别为97.8%(262/268)和28.1%(18/64),分别。在64例RPOC中,48.4%(31/64)的患者有2型血管信号。PAS患者的RPOC血管信号增强,其诊断已通过组织病理学证实。
    结论:血管分布(流量)和血管模式(斑点,条纹状或圆周状流动),血流穿透子宫肌层是区分伴有和不伴有PAS的RPOC的重要发现。此外,RPOC可能有助于PAS进展,或PAS和RPOC协调加强观察到的血管信号。
    OBJECTIVE: To evaluate the occurrence of retained products of conception (RPOC) after termination of pregnancy in the first trimester and to assess the vascular signals with transvaginal ultrasonography (TVUS) examination in the detection of retained products.
    METHODS: A retrospective cohort study was performed using TVUS examination in patients following termination of pregnancy. In cases of RPOC, 3 scales of vascular signal were identified: type 1, no or small amount, spot flow signals; type 2, medium amount, strip-like flow signals; type 3, rich amount, circumferential-like flow signals. The correlation between vascular signals and placenta accreta spectrum (PAS) staging was proposed by sonography and histopathology findings.
    RESULTS: The 3 vascular patterns were differently distributed within non-RPOC as well as RPOC patients with and without PAS: type 1 vascular signal detection rates of non-RPOC and RPOC were 97.8% (262/268) and 28.1% (18/64), respectively. Of 64 cases of RPOC, 48.4% (31/64) of the patients had type 2 vascular signals. Vascular signals were enhanced in RPOC with PAS patients whose diagnosis was confirmed by histopathology.
    CONCLUSIONS: The vascularity (amount of flow), vascular pattern (spot, strip- or circumferential-like flow), and the flow penetrating myometrium were significant findings for distinguishing concomitant RPOC with and without PAS. Additionally, RPOC may contribute to PAS progression, or PAS and RPOC in coordination strengthen the observed vascular signals.
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