Clinical Application of Super-resolution Ultrasound(SR-US) Imaging in Solid Tumors
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 100
- 试验地点
- 1
- 主要终点
- Vessel diameter
研究概览
简要总结
It has well accepted that tumor angiogenesis present aberrant vascular architecture and functional abnormalities, which is associated with tumorigenesis, tumor propagation and progression. By locating, separating and tracking microbubbles, the recently introduced and upgraded Ultrasound Localization Microscopy (ULM) surpassed classical wave diffraction limit. However, the acquisition of structural and functional parameters of microcirculation in vivo for ULM is still confined by the compromise between the resolution and penetration depth. The relatively long acquisition time induced the difficulty of motion correction potentially, which hampers the preclinical to clinical application in organs with distinct tissue motion such as the liver. Therefore, we take the lead in studying human liver lesion microvasculature, which remains a challenge for noninvasive, quantitative and functional intravital imaging especially due to its deep-seated location and strong motion. We developed a Super-resolution Ultrasound (SR-US) imaging technique based on ULM to assess its feasibility of visualizing and quantifying microvasculature in human organs.
详细描述
In this study, 7 indexes were obtained by ultrasonic acquisition. These 7 indicators are used to describe and evaluate the microvessels in the tumor, so as to achieve the early identification and diagnosis of the tumor, and to monitor the growth of the tumor for a long time and evaluate the treatment of the tumor. This is not available with other ultrasound devices.
Based on contrast-enhanced ultrasound, this technology can provide information of smaller blood vessels, which will certainly contribute to the early diagnosis and real-time evaluation of solid tumors during treatment, and play an important role in clinical application.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age over 18 years old, gender unlimited;
- •Patients with solid organ tumors with a maximum diameter > 1cm;
- •No contraindications with contrast ultrasound agents;
- •It can improve the pathological results of the tumor or the diagnostic results supported by other relevant imaging tests.
- •Patients can understand the purpose of the examination, voluntarily participate and sign the informed consent.
排除标准
- •The subject is known to be allergic to any component of the contrast agent Sonovue;
- •Lesions were diffuse or borderless on contrast ultrasound;
- •Patients who underwent previous anti-angiogenesis and chemotherapy, or other local treatment of the tumor;
- •Poor image display or deep position in conventional ultrasound evaluation (<10 cm from skin),
- •The researchers determined that there were any other factors that were not suitable for inclusion or affected participants' participation in the study
- •Patients with severe heart disease or lung disease;
- •Patients who are pregnant, may be pregnant or breastfeeding;
- •No enhanced MRI or enhanced CT results can be obtained;
- •The investigator considers the subjects unfit to participate in this study.
结局指标
主要结局
Vessel diameter
时间窗: 30 minutes
To describe the diameters of the tiniest blood vessels that can be explored
Mean flow velocity
时间窗: 30 minutes
The average velocity in the region of interest
Vessel density
时间窗: 30 minutes
To describe the ratio of the number of blood vessels in the tumor to the cross-sectional area of the tumor
Vessel density ratio
时间窗: 30 minutes
The ratio of blood vessel density between the core and peripheral areas of the tumor
Distance metric
时间窗: 30 minutes
The ratio of the total length of the curve path to the straight line distance from the beginning to the end of the curve
Perfusion index
时间窗: 30 minutes
The product of the average speed of microbubbles in region of interest (ROI) and the ROI area
Perfusion ratio
时间窗: 30 minutes
Perfusion ratio of tumor core to peripheral area
次要结局
未报告次要终点
研究者
Ping Liang
Chief physician
Chinese PLA General Hospital