相关实验视频

Updated: Jan 13, 2026

Implantation and Evaluation of Melanoma in the Murine Choroid via Optical Coherence Tomography

Implantation and Evaluation of Melanoma in the Murine Choroid via Optical Coherence Tomography

Published on: December 2, 2022

[光连贯断层扫描 - - 冠状腺瘤血管学特征]

R H Zhang¹, H T Wu¹, Y M Liu¹

¹Beijing Tongren Eye Center, Beijing key Laboratory of Intraocular Tumor Diagnosis and Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China.

[Zhonghua yan ke za zhi] Chinese journal of ophthalmology

|January 6, 2026

概括

光学连贯断层扫描血管造影 (OCTA) 显示出明显的血管模式,使胆管黑色素瘤 (CM) 与胆管神经区分开来. 骨中的无组织血管可能表明恶性转变,有助于早期检测.

科学领域:

眼科医生眼科眼科
医疗成像医学成像
在瘤学瘤学.

背景情况:

胸腔黑色素瘤 (CM) 和胸腔瘤是常见的眼睛瘤.
区分CM和nevus对于适当的管理至关重要.
光学连贯断层扫描血管造影 (OCTA) 提供眼球血管系统的高分辨率可视化.

研究的目的:

使用OCTA比较CM和胆道神经的内部血管特征.
确定OCTA特征,区分恶性和良性胆道病变.
评估OCTA在预测胆道瘤恶性转变方面的潜力.

主要方法:

一项涉及临床诊断的CM或胆道神经瘤患者的横截面研究.
获取以瘤为中心的OCTA图像.
重建和分析内在瘤血管在choriocapillaris和全厚的胸膜板.
使用TFSOM-DIM标准对胆道神经风险的评估.
在CM和nevus组之间对OCTA特征的比较.

主要成果:

冠状动脉瘤通常在冠状动脉板中显示出无组织的血管网络和血管环 (98.5%).
斑点的血管区域 (80.6%) 和内在的瘤血管 (77.6%) 是常见的CMs在choriocapillaris板.
胸腔内表现出两种模式:减弱的流动信号 (50%) 或黑色素瘤般的无组织血管系统 (50%).
与低风险神经瘤 (29.4%) 相比,高风险神经瘤 (81.8%) 的发生率明显高于黑色素瘤类型的无组织血管网络 (29.4%).

结论:

OCTA揭示了CM和冠状动脉之间明显的内血管差异.
CMs表现出比nevi. nevi更明显的血管失调.
胸腔内中类似黑色素瘤的血管网络的存在是恶性转变风险的重要指标.
OCTA 作为一种有价值的成像工具,用于识别高风险的胸腔瘤.

更多相关视频

Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography

Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography

Published on: February 18, 2022

Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration

Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration

Published on: May 26, 2023

相关概念视频

Glaucoma: Overview

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...

Imaging Studies VII: Vascular Imaging

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...