clinical image

  • 文章类型: Journal Article
    背景:自动生成放射学报告,它试图从临床X光照片中创建一个自由文本描述,正在成为临床医学和人工智能之间的关键交叉点。利用自然语言处理技术可以加快报告创建速度,提高医疗质量和标准化。然而,大多数现有的研究尚未充分挖掘先进语言和视觉模型的综合潜力。
    目的:本研究的目的是探索将预先训练的视觉语言模型整合到放射学报告生成中。这将使视觉语言模型能够自动将临床图像转换为高质量的文本报告。
    方法:在我们的研究中,我们介绍了一种名为ClinicalBLIP的放射学报告生成模型,建立在基础InstructBLIP模型上,并使用临床图像到文本数据集对其进行完善。提出了一种基于低秩适应的多级微调方法,以加深视觉编码器和临床图像的大型语言模型的语义理解。此外,通过及时学习整合了先前的知识,以提高生成报告的准确性。在IUX射线和MIMIC-CXR数据集上进行了实验,与ClinicalBLIP相比,几种领先的方法。
    结果:实验结果表明,ClinicalBLIP在IUX-RAY/MIMIC-CXR测试集上获得了0.570/0.365和0.534/0.313的优越分数,用于评估翻译的度量与显式排序(METEOR)和面向召回的评估(ROUGE)评估,分别。这种性能明显超过现有的最先进的方法。进一步的评估证实了多级微调和整合现有信息的有效性,导致实质性的改进。
    结论:所提出的ClinicalBLIP模型证明了增强临床放射学报告生成的鲁棒性和有效性,为现实世界的临床应用提供了重要的前景。
    BACKGROUND: The automatic generation of radiology reports, which seeks to create a free-text description from a clinical radiograph, is emerging as a pivotal intersection between clinical medicine and artificial intelligence. Leveraging natural language processing technologies can accelerate report creation, enhancing health care quality and standardization. However, most existing studies have not yet fully tapped into the combined potential of advanced language and vision models.
    OBJECTIVE: The purpose of this study was to explore the integration of pretrained vision-language models into radiology report generation. This would enable the vision-language model to automatically convert clinical images into high-quality textual reports.
    METHODS: In our research, we introduced a radiology report generation model named ClinicalBLIP, building upon the foundational InstructBLIP model and refining it using clinical image-to-text data sets. A multistage fine-tuning approach via low-rank adaptation was proposed to deepen the semantic comprehension of the visual encoder and the large language model for clinical imagery. Furthermore, prior knowledge was integrated through prompt learning to enhance the precision of the reports generated. Experiments were conducted on both the IU X-RAY and MIMIC-CXR data sets, with ClinicalBLIP compared to several leading methods.
    RESULTS: Experimental results revealed that ClinicalBLIP obtained superior scores of 0.570/0.365 and 0.534/0.313 on the IU X-RAY/MIMIC-CXR test sets for the Metric for Evaluation of Translation with Explicit Ordering (METEOR) and the Recall-Oriented Understudy for Gisting Evaluation (ROUGE) evaluations, respectively. This performance notably surpasses that of existing state-of-the-art methods. Further evaluations confirmed the effectiveness of the multistage fine-tuning and the integration of prior information, leading to substantial improvements.
    CONCLUSIONS: The proposed ClinicalBLIP model demonstrated robustness and effectiveness in enhancing clinical radiology report generation, suggesting significant promise for real-world clinical applications.
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  • 文章类型: Case Reports
    奇静脉破裂可能是由于移动奇足弓突然减速所致。这可以引发胸部内的剪切力。
    Rupture of the azygous vein may result from abrupt deceleration applied to the mobile azygous arch, which can initiate shearing forces within the thorax.
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  • 文章类型: Journal Article
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  • 文章类型: Case Reports
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  • 文章类型: Systematic Review
    猴痘是一种人畜共患疾病,中部和西部非洲地区的地方病,并重新出现,目前导致截至2022年5月的疫情爆发。在这次系统审查中,我们的目标是描述疾病的当前面貌,对皮肤粘膜进行了详细的分类,以及该疾病的全身症状。我们搜索了四个主要的在线数据库,关键字为“猴痘”和“正痘病毒”。共收录46篇文章,累计1984年确诊病例。患者主要是与男性发生性关系的男性,他们大多在30多岁,有无保护的性接触或国际旅行史。在皮肤粘膜表现中,肛门生殖器病变是最常见的,然后是四肢的病变,脸,树干,和手掌或鞋底。在病变类型中,膀胱脓疱,脓疱或假脓疱,泡状膜和丘疹性病变是最常见的,主要是异步呈现,每个患者的病变少于10个。几乎所有患者也报告了全身表现,即发烧,淋巴结病,疲劳,肌痛,头痛,咽炎,和直肠炎。性接触是本次疫情的主要传播途径,体液中的病毒脱落起着关键作用。我们已经将这些新爆发的特殊发现与以前的爆发进行了比较。我们还从我们纳入的研究中收集并分类了图像,为这个“新的”猴痘面孔制作了一个“临床地图集”,这对临床医生来说是最重要的,并对猴痘的鉴别诊断有清晰的了解。
    Monkeypox is a zoonotic disease, endemic in central and west African regions, and has re-emerged, currently causing an outbreak as of May 2022. In this systematic review, we aimed to characterize the current face of the disease, with a detailed categorization of mucocutaneous, as well as systemic symptoms of the disease. We searched four main online databases with the keywords \"monkeypox\" and \"Orthopoxvirus\". A total of 46 articles were included, with a cumulative number of 1984 confirmed cases. Patients were predominantly men who have sex with men, who were mostly in their 30s, with a history of unprotected sexual contact or international travel. Among mucocutaneous manifestations, anogenital lesions were the most commonly observed, followed by lesions on the limbs, face, trunk, and palms or soles. Among lesion types, vesiculopustular, pustular or pseudo-pustular, vesicular-umbilicated and papular lesions were the most common, mainly presenting asynchronously, with less than 10 lesions on each patient. Almost all patients also reported systemic manifestations, namely fever, lymphadenopathy, fatigue, myalgia, headaches, pharyngitis, and proctitis. Sexual contact is the main pathway of transmission in the current outbreak, with viral shedding in bodily fluids playing a key role. We\'ve compared these idiosyncratic findings of the new outbreak with previous outbreaks. We\'ve also gathered and categorized images from our included studies to make a \"clinical atlas\" for this \"new\" face of monkeypox, which can be of utmost importance for clinicians to be familiarized with, and have a clear picture of monkeypox for their differential diagnoses.
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  • 文章类型: Journal Article
    循环肿瘤细胞(CTC)的检测是肿瘤管理中的一项有前途的技术;然而,CTC鉴定方法的缓慢发展阻碍了其临床应用。此外,由于诸如分离和正确识别的主要问题,CTC检测目前具有挑战性。为了提高胶质瘤CTCs的识别效率,我们开发了一种基于核质比(KR)的识别方法,并构建了一种自动识别算法。我们还打算确定高KRCTC与患者临床特征之间的相关性。
    从68例神经胶质瘤患者的外周血样本中分离CTC,并使用DNA-seq和免疫荧光染色进行分析。随后,我们收集神经胶质瘤患者和配对个体的临床信息进行分析.进行ROC曲线以评估基于KR的鉴定方法的效率。最后,捕获CTC图像并将其用于开发CTC识别算法。
    KR是识别神经胶质瘤CTC比细胞大小更好的参数。我们证明,低CTC计数与异柠檬酸脱氢酶(IDH)突变(p=0.024)和1p19q共缺失状态(p=0.05)独立相关,强调其在预测少突胶质细胞瘤中的效用(曲线下面积=0.770)。准确性,灵敏度,我们的算法的特异性为93.4%,81.0%,和97.4%,分别,而精密度和F1评分分别为90.9%和85.7%,分别。
    我们的发现显着提高了检测神经胶质瘤CTC的效率,并揭示了CTC计数与患者临床特征之间的相关性。这将允许研究人员进一步研究CTC的临床效用。此外,我们的自动识别算法可以在CTC识别过程中保持较高的精度,缩短时间和成本,并显著减轻临床医生的负担。
    UNASSIGNED: Detection of circulating tumor cells (CTCs) is a promising technology in tumor management; however, the slow development of CTC identification methods hinders their clinical utility. Moreover, CTC detection is currently challenging owing to major issues such as isolation and correct identification. To improve the identification efficiency of glioma CTCs, we developed a karyoplasmic ratio (KR)-based identification method and constructed an automatic recognition algorithm. We also intended to determine the correlation between high-KR CTC and patients\' clinical characteristics.
    UNASSIGNED: CTCs were isolated from the peripheral blood samples of 68 glioma patients and analyzed using DNA-seq and immunofluorescence staining. Subsequently, the clinical information of both glioma patients and matched individuals was collected for analyses. ROC curve was performed to evaluate the efficiency of the KR-based identification method. Finally, CTC images were captured and used for developing a CTC recognition algorithm.
    UNASSIGNED: KR was a better parameter than cell size for identifying glioma CTCs. We demonstrated that low CTC counts were independently associated with isocitrate dehydrogenase (IDH) mutations (p = 0.024) and 1p19q co-deletion status (p = 0.05), highlighting its utility in predicting oligodendroglioma (area under the curve = 0.770). The accuracy, sensitivity, and specificity of our algorithm were 93.4%, 81.0%, and 97.4%, respectively, whereas the precision and F1 score were 90.9% and 85.7%, respectively.
    UNASSIGNED: Our findings remarkably increased the efficiency of detecting glioma CTCs and revealed a correlation between CTC counts and patients\' clinical characteristics. This will allow researchers to further investigate the clinical utility of CTCs. Moreover, our automatic recognition algorithm can maintain high precision in the CTC identification process, shorten the time and cost, and significantly reduce the burden on clinicians.
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  • 文章类型: Journal Article
    卷积神经网络(CNN)已经证明了使用临床图像进行皮肤肿瘤分类的专家级性能,但是以前的大多数研究都集中在皮肤科医生与CNN的比较上,而不是它们的组合。我们研究的目的是评估CNN辅助对皮肤科医生临床图像解释的潜在影响。
    使用包含10类皮肤肿瘤的25,773幅临床图像的数据集对多类CNN进行了训练和验证。CNN的性能在2107张图像的独立数据集上进行了测试。从测试数据集中随机选择总共400张图像(每个类别40张)。一个完全交叉,自我控制,我们进行了多读者多病例(MRMC)研究,比较了18名获得委员会认证的皮肤科医生(经验:13/18≤10年;5/18>10年)在有或没有CNN辅助的情况下解释400张临床图像的表现.
    CNN在2107张图像上对10种类型的皮肤肿瘤进行分类时,总体准确率为78.45%,κ为0.73。CNN辅助的皮肤科医生获得了更高的准确性(76.60%vs.62.78%,P<0.001)和κ(0.74vs.0.59,P<0.001)比无协助的皮肤科医生解释400张临床图像。经验较少的皮肤科医生从CNN的帮助中受益更多。在二元分类级别(恶性或良性),灵敏度(89.56%与83.21%,P<0.001)和特异性(87.90%vs.80.92%,有CNN辅助的皮肤科医生的P<0.001)也比没有的皮肤科医生明显改善。
    CNN的帮助提高了皮肤科医生解释皮肤肿瘤的准确性,并可以进一步提高对这项新技术的接受度。
    Convolutional neural networks (CNNs) have demonstrated expert-level performance in cutaneous tumour classification using clinical images, but most previous studies have focused on dermatologist-versus-CNN comparisons rather than their combination. The objective of our study was to evaluate the potential impact of CNN assistance on dermatologists for clinical image interpretation.
    A multi-class CNN was trained and validated using a dataset of 25,773 clinical images comprising 10 categories of cutaneous tumours. The CNN\'s performance was tested on an independent dataset of 2107 images. A total of 400 images (40 per category) were randomly selected from the test dataset. A fully crossed, self-control, multi-reader multi-case (MRMC) study was conducted to compare the performance of 18 board-certified dermatologists (experience: 13/18 ≤ 10 years; 5/18>10 years) in interpreting the 400 clinical images with or without CNN assistance.
    The CNN achieved an overall accuracy of 78.45% and kappa of 0.73 in the classification of 10 types of cutaneous tumours on 2107 images. CNN-assisted dermatologists achieved a higher accuracy (76.60% vs. 62.78%, P < 0.001) and kappa (0.74 vs. 0.59, P < 0.001) than unassisted dermatologists in interpreting the 400 clinical images. Dermatologists with less experience benefited more from CNN assistance. At the binary classification level (malignant or benign), the sensitivity (89.56% vs. 83.21%, P < 0.001) and specificity (87.90% vs. 80.92%, P < 0.001) of dermatologists with CNN assistance were also significantly improved than those without.
    CNN assistance improved dermatologist accuracy in interpreting cutaneous tumours and could further boost the acceptance of this new technique.
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  • 文章类型: Case Reports
    A man in his 40\'s was admitted to the general surgery ward with multiple episodes of large amounts of painless bright red per rectal (PR) bleeding and passage of clots. Urgent outpatient colonoscopy revealed a diverticulum which was associated with a wide diameter blood vessel originating from its base which was not actively bleeding. The clinical picture presented by the colonoscopy is one of the first to clearly identify large caliber blood vessels emerging from a colonic diverticulum.
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  • 文章类型: Journal Article
    Dicephalusparapross是具有两个独立头部的连体双胞胎。正确的识别有助于患者咨询和及时转诊到专科中心。
    Dicephalus parapagus are conjoined twins with two separate heads. Proper identification helps in patient counseling and timely referral to specialist centers.
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  • 文章类型: Case Reports
    一名42岁的男性,有3个月的持续右侧额叶头痛病史,严重的右侧间歇性剧烈下颌疼痛,吞咽困难,咽球,以及他右眼视力模糊的恶化。颈脑血管造影显示出突出的,右侧茎突4cm,靠近右颈内动脉(ICA)。患者被转诊至耳鼻咽喉科进行茎样切除术并继续护理。
    A 42-year-old male presented with 3-month history of constant right-sided frontal headaches, severe right-sided intermittent sharp jaw pain, odynophagia, globus pharyngis, and worsening episodes of blurry vision in his right eye. Cervicocerebral angiography demonstrated a prominent, 4 cm right sided styloid process with close proximity to the right internal carotid artery (ICA). The patient was referred to otorhinolaryngology for styloidectomy and continued care.
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