Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 7

年份

2023 1

2021 1

2017 2

2015 1

2012 1

2009 1

关键词

光学活检 1

共聚焦内窥镜 1

早期检测 1

液体活检 1

生物标志物 1

细胞分辨率 1

肝细胞癌 1

展开︾

检索范围：

排序：展示方式：

Utility of transbronchial biopsy in the diagnosis of lymphangioleiomyomatosis

null

《医学前沿（英文）》 2012年第6卷第4期页码 395-405 doi: 10.1007/s11684-012-0231-5

摘要：

Pulmonary lymphangioleiomyomatosis (LAM) is a rare cystic lung disease that targets women during their reproductive years. A confident diagnosis can often be based on clinical grounds, but diagnostic certainty requires pathological analysis. Although surgical lung biopsy is considered the gold standard for obtaining tissue in patients with diffuse lung disease, it is also associated with higher morbidity and mortality than alternative, less invasive techniques. The objective of our study was to examine the utility of transbronchial biopsy in the diagnosis of LAM. We conducted two online surveys of over 1 000 LAM patients registered with the LAM Foundation who were accessible by email. Transbronchial biopsy specimens were subsequently collected and reviewed by an expert pathologist to validate the diagnosis. We found that transbronchial biopsy has a yield of approximately 60% in patients with LAM. We conclude that transbronchial biopsy may be a safe and effective method for establishing the diagnosis of LAM, obviating the need for surgical lung biopsy in more than half of LAM patients.

关键词： lymphangioleiomyomatosis lymphangiomyomatosis multicystic lung disease diffuse cystic lung disease transbronchial biopsy perivascular epithelioid cell tumor (PEComa) HMB-45

HTML PDF 收藏

Design and evaluation of a novel biopsy needle with hemostatic function

《机械工程前沿（英文）》 2023年第18卷第2期 doi: 10.1007/s11465-022-0738-7

摘要： Biopsy is a method commonly used for early cancer diagnosis. However, bleeding complications of widely available biopsy are risky for patients. Safer biopsy will result in a more accurate cancer diagnosis and a decrease in the risk of complications. In this article, we propose a novel biopsy needle that can reduce bleeding during biopsy procedures and achieve stable hemostasis. The proposed biopsy needle features a compact structure and can be operated easily by left and right hands. A predictive model for puncture force and tip deflection based on coupled Eulerian–Lagrangian (CEL) method is developed. Experimental results show that the biopsy needle can smoothly deliver the gelatin sponge hemostatic plug into the tissue. Although the hemostatic plug bends, the overall delivery process is stable, and the hemostatic plug retains in the tissue without being affected by the withdrawal of the needle. Further experiments indicate that the specimens are well obtained and evenly distributed in the groove of the outer needle without scattering. Our proposed design of biopsy needle possesses strong ability of hemostasis, tissue cutting, and tissue retention. The CEL model accurately predicts the peak of puncture force and produces close estimation of the insertion force at the postpuncture stage and tip position.

关键词： cancer diagnosis biopsy needle hemostatic function predictive model coupled Eulerian−Lagrangian

HTML PDF 收藏

Clinical characteristics and outcomes of biopsy-proven diabetic nephropathy

null

《医学前沿（英文）》 2017年第11卷第3期页码 386-392 doi: 10.1007/s11684-017-0574-z

摘要：

Kidney damage is common in patients with diabetes mellitus (DM). However, whether the type of kidney damage can be reliably diagnosed using clinical data alone remains unclear. Predictive factors for diabetic nephropathy (DN) outcomes are also poorly understood. In this study, the clinical manifestations of 111 cases of biopsy-proven DN were described, and the clinical and pathological parameters of patients with different DN outcomes were compared. Results showed that long DM duration (>10 years in 32.4% of patients), severe proteinuria (62.2%), and renal dysfunction (estimated glomerular filtration rate [eGFR]<60 mL/(min·1.73 m²)) (52.3%) did not accurately indicate whether the condition of these patients progressed to DN. Hematuria (48.6%) failed to specify either DN or nondiabetic renal disease. Diabetic retinopathy (78.4%) was a crucial complication in patients with DN. Kaplan–Meier analysis revealed that the renal survival of 53 patients who were diagnosed with DN and were followed up was not significantly associated with glomerular classification (P>0.05). Cox’s regression analysis demonstrated that renal survival time was significantly influenced by sex (b= 1.394, P= 0.038), hematuria (b= 0.036, P= 0.029), and eGFR (b= −0.039, P= 0.002) but was not significantly affected by age, 24 h urinary protein excretion, or glomerular classification (P>0.05). In conclusion, the clinical characteristics of DN vary, and renal biopsy is necessary to determine renal damage patterns. Sex, hematuria, and the eGFR may affect DN outcomes, whereas the glomerular classification may not.

关键词： diabetic nephropathy clinical characteristics renal biopsy outcomes

HTML PDF 收藏

Application of liquid biopsy in precision medicine: opportunities and challenges

null

《医学前沿（英文）》 2017年第11卷第4期页码 522-527 doi: 10.1007/s11684-017-0526-7

摘要：

Precision medicine for cancer patients aims to adopt the most suitable treatment options during diagnosis and treatment of individuals. Detecting circulating tumor cell (CTC) or circulating tumor DNA (ctDNA) in plasma or serum could serve as liquid biopsy, which would be useful for numerous diagnostic applications. Liquid biopsies can help clinicians screen and detect cancer early, stratify patients to the most suitable treatment and real-time monitoring of treatment response and resistance mechanisms in the tumor, evaluate the risk for metastatic relapse, and estimate prognosis. We summarized the advantages and disadvantages of tissue and liquid biopsies. We also further compared and analyzed the advantages and limitations of detecting CTCs, ctDNAs, and exosomes. Furthermore, we reviewed the literature related with the application of serum or plasma CTCs, ctDNAs, and exosomes for diagnosis and prognosis of cancer. We also analyzed their opportunities and challenges as future biomarkers. In the future, liquid biopsies could be used to guide cancer treatment. They could also provide the ideal scheme to personalize treatment in precision medicine.

关键词： liquid biopsy circulating tumor cells cell-free ctDNA exosomes precision medicine

HTML PDF 收藏

Application progress of lymphography in oncology

Yang YU, Jibin LIU, Lixue YIN

《医学前沿（英文）》 2009年第3卷第1期页码 13-19 doi: 10.1007/s11684-009-0016-7

摘要： Lymphography is often used for the diagnosis of lymphatic metastasis in oncology. Determination of lymphatic metastasis is extremely important for accurate cancer staging, which may directly guide the clinical therapeutic scheme. In recent years, the technology of lymphography has developed rapidly on the basis of traditional lymphography, with the appearance of computed tomography (CT) lymphography, nuclear magnetic resonance (MR) lymphography, contrast-enhanced lymphosonography, and so on; the diagnostic accuracy has also been improved. The imaging principles and methods of these various technologies of lymphography are reviewed in this paper, and their applications and significance in oncology are also discussed in detail.

关键词： lymphography lymphatic metastasis sentinel lymph node biopsy

HTML PDF 收藏

用于细胞成像的共聚焦内窥镜 Article

王家福,杨敏,杨莉,张云,袁菁,刘谦,侯晓华,付玲

《工程（英文）》 2015年第1卷第3期页码 351-360 doi: 10.15302/J-ENG-2015081

摘要：

使用内窥镜的目的是实现与组织病理诊断相符的即时诊断。在过去的十年里，共聚焦激光扫描显微成像技术被引入内窥镜领域。共聚焦内窥镜使得对活体组织的显微观察能够达到与组织学样品的体外显微成像相当的放大倍数和分辨率。发展这种内窥镜的主要挑战在于具有微米级分辨率的显微成像光纤探头的小型化。笔者研制了一套基于光纤束，分辨率为1.4 μm，成像速度可达8 fps的共聚焦内窥镜系统。光纤探头的直径为2.6 mm，可与常规内窥镜的活检通道兼容。该共聚焦内窥镜的样机已经被用于观察小鼠胃肠道上皮细胞，并将进一步被用于临床试验。此外，该共聚焦内窥镜能够被用于上皮细胞功能的转化研究，以监测自然生理环境中细微颗粒的功能和细胞间的相互作用。

关键词：细胞分辨率共聚焦内窥镜光学活检

HTML PDF 收藏

早期监测肝细胞癌的新型非蛋白生物标志物 Review

Ghassan K. Abou-Alfa, 吴琳, Augusto Villanueva

《工程（英文）》 2021年第7卷第10期页码 1369-1374 doi: 10.1016/j.eng.2021.02.020

摘要：

肝细胞癌（HCC）早期检测是对处于早期阶段的肝细胞癌进行检出的方法，对降低高风险患者的HCC死亡率至关重要。然而，对于早期HCC，目前仍然缺乏具有高度灵敏性和特异性的监测生物标志物。近年来，人们对循环系统中可检测到的肿瘤源性分子特征进行了大量研究，比如循环肿瘤脱氧核糖核酸（ctDNA）和循环肿瘤核糖核酸（ctRNA），以探讨它们作为多种肿瘤类型的候选非侵入性生物标志物的潜力。本文汇总了目前有关早期HCC检测的新方法及应用的研究。

关键词：肝细胞癌早期检测生物标志物液体活检