摘要:
A system and method for light stimulation within a medium. The system has a reduced-voltage x-ray source configured to generate x-rays from a peak applied cathode voltage at or below 105 kVp, and a plurality of energy-emitting particles in the medium which, upon radiation from the x-ray source, radiate at a first lower energy than the x-ray source to interact with at least one photoactivatable agent in the medium. The method introduces the plurality of energy-emitting particles into the medium, radiates the energy-emitting particles in the medium with x-rays generated from a peak applied cathode voltage at or below 105 kVp; and emits a lower energy than the x-ray source to interact with the medium or with at least one photoactivatable agent in the medium.
摘要:
Contrast agents developed specifically for x-ray diagnostics provide dose-enhanced radiotherapy and radiosurgery. The presence of heavy elements from these contrast agents, even small quantities, leads to a major dose increase in target tissue. When combined with in vivo calibration of the amount of contrast agent, the procedure is quick, accurate, and safe. The technique can also be used in combination with other techniques, such as focused x-rays, to achieve further enhancement of therapeutic ratio. Through optimization of the equipment it is possible to achieve very large ratios of dose in target to dose in healthy tissue up to 10:1.
摘要:
A method and apparatus for treating a tumor in a patient. In one embodiment, the method comprises the steps of: dosing the patient with a substituted tumor-specific agent and irradiating the tumor with energetic ions, the ions having sufficient energy to penetrate into the tumor and cause nuclear fusion reactions, but not to pass through the tumor. In one embodiment, the substituted tumor-specific agent incorporates deuterium. In this embodiment, the energetic ions are tritium nuclei. In this embodiment, the apparatus comprises a tritium ion source, an accelerator producing an ion beam, a scanning mechanism, and a plurality of neutron detectors positioned adjacent to the patient. The tritium ion beam is programmed to traverse the site of the tumor with tritium ions having energy sufficient to penetrate into the tumor and cause nuclear fusion reactions, but not pass through the tumor.
摘要:
Compounds, compositions, their methods of preparation and use in binding bio-affecting substances to the surface membrane of bioparticles, such as enkaryotic cells, without producing appreciable detrimental effect on morphology or physiological function of cells.
摘要:
The presence or quantity of a selected subset of cells, which is part of a subpopulation of a mixed cell population, is determined by a method in which a detectable reporter substance is uniformly incorporated into substantially all cells of the subpopulation containing the subset of interest. The subset of interest is then affinity-separated by incubating a test sample of the mixed cell population containing the labeled subpopulation with a specific binding substance which selectively binds to characteristic determinants of the cell subset of interest. Occurrence of the reporter substance in the separated fraction is then detected, and correlated to a predetermined standard to determine the presence or quantity of the subset of interest within the cell population. According to another aspect of the invention a method is provided for quantitating two or more selected subsets of cells within a subpopulation of a mixed cell population. After labeling, the entire subpopulation is affinity-separated from the mixed cell population, and occurrence of the reporter substance in the separated fraction is detected. Next, subsets of interest within the subpopulation are affinity-separated as described above, and the level of detected reporter substance in each subset is compared to the level detected in the entire subpopulation. According to further aspects of the invention test kits are provided for performing the above-described methods.
摘要:
Frequency selective radiation therapy providing selective tissue damage or necrosis by irradiating a component element of the target tissue at the corresponding Mossbauer absorption frequency. The component radiation absorption at the Mossbauer absorption frequency is thus enhanced many times over the absorption of the surrounding tissue having a different Mossbauer absorption frequency. The energy thusly absorbed by the target tissue component is converted to and remitted as Auger electrons, which provide intranuclear radiation resulting in lethal double strand breaks in the DNA molecules of the target tissue. The therapy is administered in frequency and tissue selective modes of treatment, and may be combined with conventional chemotherapeutic agents to provide a further enhanced treatment modality. Moreover, the source frequency can be adjusted to enhance the killing effect. The therapy method and apparatus according to the present invention is useful in combination with naturally occurring or administered pharmaceutical stable isotope absorbers, having significantly reduced side effects by comparison to conventional chemotherapy or radiation therapy.
摘要:
Frequency selective radiation therapy providing selective tissue damage or necrosis by irradiating a component element of the target tissue at the corresponding Mossbauer absorption frequency. The component radiation absorption at the Mossbauer absorption frequency is thus enhanced many times over the absorption of the surrounding tissue having a different Mossbauer absorption frequency. The energy thusly absorbed by the target tissue component is converted to and remitted as Auger electrons, which provide intranuclear radiation resulting in lethal double strand breaks in the DNA molecules of the target tissue. The therapy is administered in frequency and tissue selective modes of treatment, and may be combined with conventional chemotherapeutic agents to provide a further enhanced treatment modality. Moreover, the source frequency can be adjusted to enhance the killing effect. The therapy method and apparatus according to the present invention is useful in combination with naturally occurring or administered pharmaceutical stable isotope absorbers, having significantly reduced side effects by comparison to convention chemotherapy or radiation therapy.
摘要:
A system and method for light stimulation within a medium. The system has a reduced-voltage x-ray source configured to generate x-rays from a peak applied cathode voltage at or below 105 kVp, and a plurality of energy-emitting particles in the medium which, upon radiation from the x-ray source, radiate at a first lower energy than the x-ray source to interact witht least one photoactivatable agent in the medium. The method introduces the plurality of energy-emitting particles into the medium, radiates the energy-emitting particles in the medium with x-rays generated from a peak applied cathode voltage at or below 105 kVp; and emits a lower energy than the x-ray source to interact with the medium or with at least one photoactivatable agent in the medium.
摘要:
A system and method for light stimulation within a medium. Products, compositions, systems, and methods for modifying a target structure which mediates or is associated with a biological activity, including treatment of conditions, disorders, or diseases mediated by or associated with a target structure, such as a virus, cell, subcellular structure or extracellular structure. The methods may be performed in situ in a non-invasive manner by application of an initiation energy to a subject thus producing an effect on or change to the target structure directly or via a modulation agent. The methods may further be performed by application of an initiation energy to a subject in situ to activate a pharmaceutical agent directly or via an energy modulation agent, thus producing an effect on or change to the target structure. Kits containing products or compositions formulated or configured and systems for use in practicing these methods.
摘要:
Described herein are anti-cancer compounds composed of a macromolecule comprising (1) at least one anti-cancer agent directly or indirectly bonded to the macromolecule and (2) at least one high Z element directly or indirectly bonded to the macromolecule that is capable of producing Auger electrons upon exposure to X-ray energy. When the compounds are exposed to low energy X-ray (e.g., kilo electron volts KeV) Auger electrons are produced by the high Z elements present in the compound. Because lower energy is required when compared to typical radiotherapy, which uses therapeutic X-ray energy in the million electron volt range (MeV), the subject experiences lower collateral damage when compared to radiation therapy. Additionally, the presence of the anti-cancer agent provides a second mechanism for killing cancer cells. Methods for making and using the anti cancer compounds are also described herein.