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相关概念视频

Radiation: Applications01:17

Radiation: Applications

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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
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Radiation Pressure: Problem Solving01:09

Radiation Pressure: Problem Solving

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The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...
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Absorption of Radiation01:05

Absorption of Radiation

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The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
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相关实验视频

Updated: Jan 13, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

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量子计算用于辐射疗法的优化.

Robabeh Rahimi1, Akira SaiToh2, Arezoo Modiri1

  • 1Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland, USA.

Medical physics
|January 6, 2026
PubMed
概括
此摘要是机器生成的。

量子计算 (QC) 为优化放射治疗计划提供了一种强大的新方法,在复杂的场景中优于经典方法. 这项研究证明了QC.

关键词:
癌症治疗 治疗 治疗 癌症医学物理 医学物理优化的优化优化优化.量子计算是一种量子计算.量子优化算法的量子优化算法医疗保健中的量子技术辐射治疗疗法 辐射治疗疗法

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科学领域:

  • 量子计算是一种量子计算.
  • 医学物理 医学物理
  • 计算优化计算优化

背景情况:

  • 经典的优化方法与复杂的,大规模的放射治疗规划问题作斗争.
  • 量子计算 (QC) 为这些挑战提供了一个新的解决方案.
  • 生物医学应用越来越多地利用QC来完成复杂的优化任务.

研究的目的:

  • 实施和评估量子和QAOA以优化放射治疗计划.
  • 为了使用成本函数的伊辛哈密尔顿公式.
  • 为此应用,在基于电路的量子硬件上进行第一个实证实现.

主要方法:

  • 制定了一个简化的放射治疗优化问题.
  • 使用D-Wave上的量子和IBM量子硬件上的QAOA解决了问题.
  • 在原则证明和临床相关的前列腺质子计划上测试了哈密尔顿式的配方.
  • 为了可扩展性,评估了1和2量子比特/voxel编码.

主要成果:

  • 首次展示QC电路模型硬件用于放射治疗规划优化.
  • 量子化成功地找到最佳的解决方案.
  • 使用临床数据成功应用到现实的双边前列腺质子计划.
  • 用临床来源的参数证明了QC优化的可行性.

结论:

  • 量子优化显示了在放射治疗中比经典方法具有潜在的优势.
  • 哈密尔顿式的制定和对真实硬件的验证是基于QC的治疗计划的关键步骤.
  • 需要进一步研究可扩展性和克服临床整合的实际挑战.