2 results about "Radiation therapy fields" patented technology

The application discloses a new actinium structure material obtained through first principle calculation and prediction, and belongs to the technical field of nuclear medical radiotherapy. The structure has an international symbol of Rm, a space group of 166, belongs to a trigonal system, a lattice constant of a=b=c=9.98371 Å, and a cell angle of α=β=γ=23.3174°. Ac1 is located at (0, 0, 0) in the cell, Ac2 is located at (0.77754, 0.77754, 0.77754), and Ac3 is located at (0.22246, 0.22246, 0.22246), thereby forming a layered hexagonal stacking structure. The structure has a low energy under normal pressure and is more stable than a traditional Fmm structure considered to be stable. Based on density functional theory calculation, the structure material has metallic properties, can be used for targeted alpha therapy, causes malignant cell death through alpha particle release, and has potential application value in the field of nuclear medical imaging and radiotherapy.

The present disclosure relates to the field of radiotherapy, in particular, methods of and apparatus for treating cancer using ultra-high dose rate radiotherapy (FLASH). The apparatus may comprise a device configured to administer to the subject no more than five fractions of proton ultra-high dose rate radiotherapy (FLASH), said fractions having a range of radiation from 1.5 Gy to 60 Gy, collectively. The device may be configured such that the treatment is sufficient to prevent further growth of the tumor for at least 10% longer than standard of care radiotherapy, induce at least 10% more tumor regression than standard of care radiotherapy and / or delay tumor regrowth by at least about 2 months longer than standard of care radiotherapy.