在激光间歇性热疗法期间,用于向质母细胞瘤覆盖的自动激光收缩
Shreeniket Pawar1, Yash Sharad Lad1, Nageshwar Arepally1
1Department of Mechanical Engineering, School of Science, Engineering, and Technology, The Pennsylvania State University-Harrisburg, Middletown, Pennsylvania, USA.
Medical physics
|February 10, 2026
概括
这项研究引入了一种激光间歇性热疗法 (LITT) 的自动化系统,用于治疗质母细胞瘤 (GBM). 自动化方法使病变覆盖率提高了25%,治疗时间缩短了,显示了加强GBM治疗的潜力.
科学领域:
- 神经外科 神经外科
- 生物医学工程 生物医学工程
- 计算建模 计算建模
背景情况:
- 目前用于质母细胞瘤 (GBM) 的激光间歇热疗法 (LITT) 需要手动调整以获得最佳的损伤覆盖.
- 医生依赖的探针回收限制最大安全损伤覆盖范围 (LC).
研究的目的:
- 开发一个自动化的MR引导LITT系统,使用温度和热损伤反来准确定位激光探头.
- 用自动化系统在GBM治疗期间实现目标病变覆盖 (LC).
主要方法:
- 设计了一个级联的比例积分导数 (PID) 控制器,具有用于热损伤反的模糊逻辑控制器 (Ω ≥ 0.99).
- 在COMSOL中使用有限元分析 (FEA) 建模的生物热传递在MATLAB Simulink中的多物理和控制系统.
- 模拟治疗患者的voxel模型,结合头骨,脑液,大脑和瘤领域.
主要成果:
- 自动化框架保持了60°C的瘤边界温度.
- 与手动方法相比,损伤覆盖率 (LC) 大约增加了25%.
- 显著减少了整体治疗时间.
结论:
- 自动化MRgLITT系统显示了改善病变覆盖率和减少GBM治疗治疗时间的潜力.
- 这种方法可以减少LITT程序中的特定操作者的变化.
- 该自动化LITT系统的进一步开发和验证正在计划中.
相关概念视频
Targeted Cancer Therapies
9.0K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
9.0K
Clot Retraction and Fibrinolysis
9.1K
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
9.1K
Matrix-Assisted Laser Desorption Ionization (MALDI)
1.2K
Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI is an ionization technique, widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.The analyte of interest, a biomolecule or a mixture of biomolecules, is mixed with a suitable matrix...
1.2K
Thermal expansion and Thermal stress: Problem Solving
2.2K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
2.2K
Thermal Strain
2.9K
Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...
2.9K
Gene Therapy
27.7K
Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
27.7K


