Provided are methods of determining prior radiation dose exposure levels for subjects, and kits therefor. Also provided are methods of treatment.

Provided are methods of determining prior radiation dose exposure levels for subjects, and kits therefor. Also provided are methods of treatment.

The present technology relates to nanomaterials and methods of their use, and more specifically to methods and structures using nanomaterials to fiducially measure radiation dosing.

The present technology relates to nanomaterials and methods of their use, and more specifically to methods and structures using nanomaterials to fiducially measure radiation dosing.

This present disclosure provides a multi-ply radiation dosage indicator, which includes a first ply having two visible readable indicia thereon. The dual radiation sensitive zones are capable of changing opacity in response to exposure radiation. Each radiation sensitive zone can respond to an irradiation dose in tandem or independent of one another. Once the radiation sensitive zone exceeds the design exposure threshold, the visibility of the indicia is altered thereby providing an indication of irradiation exposure. The radiation sensitive zone may either be transparent or opaque and can change its opacity in response to exposure to radiation exceeding a predetermined threshold so as to change the visibility of the indicia.

A low cost, rapid, flexible radiation detector uses inorganic metal halide precursors and dyes that respond to self-quenching hybrid scintillation. Remote, high-contrast, laser sensing can be used to determine when exposure of the detector to radiation occurs (even temporally).

The method and kit for detecting technetium-99m radioisotopes provide color-change solutions for visual detection of technetium-99m radioisotope-based tracers. A first color-change solution is formed from a mixture of thymol blue sodium salt solution and bromocresol purple solution. A first sample to be tested is determined to be a substance containing technetium-99m radioisotopes when the first sample to be tested turns yellow in color following spraying with the first color-change solution. A second color-change solution is formed from a mixture of bromocresol green solution and neutral red solution. A second sample to be tested is determined to be a substance containing technetium-99m radioisotopes when the second sample to be tested turns purple in color following spraying with the second color-change solution. The method and kit provide a rapid test for distinguishing a spill of radioactive TC-99m tracer from a saline spill in a nuclear medicine facility.

The method and kit for detecting technetium-99m radioisotopes provide color-change solutions for visual detection of technetium-99m radioisotope-based tracers. A first color-change solution is formed from a mixture of thymol blue sodium salt solution and bromocresol purple solution. A first sample to be tested is determined to be a substance containing technetium-99m radioisotopes when the first sample to be tested turns yellow in color following spraying with the first color-change solution. A second color-change solution is formed from a mixture of bromocresol green solution and neutral red solution. A second sample to be tested is determined to be a substance containing technetium-99m radioisotopes when the second sample to be tested turns purple in color following spraying with the second color-change solution. The method and kit provide a rapid test for distinguishing a spill of radioactive TC-99m tracer from a saline spill in a nuclear medicine facility.

A gel forming composition for radiation dosimetry, and a high sensitivity and high safety radiation dosimeter using a gel formed from the composition. A gel forming composition for radiation dosimetry comprising a gelator and a compound of Formula (1): ##STR00001##
(wherein R.sub.1 is a hydrogen atom, a halogen atom, an optionally substituted C.sub.1-12 alkyl group, etc.; and R.sub.2 and R.sub.3 are each independently a hydrogen atom, an optionally substituted C.sub.1-12 alkyl group, an optionally substituted monovalent C.sub.6-12 aromatic group, or R.sub.2 and R.sub.3 form a 4- to 8-membered ring together with a carbon atom to which R.sub.2 and R.sub.3 are bonded, and the 4-to 8-membered ring may have 0 to 3 nitrogen atoms, oxygen atoms, or sulfur atoms as a ring atom, provided that R.sub.2 and R.sub.3 are not simultaneously a hydrogen atom).

A gel forming composition for radiation dosimetry, and a high sensitivity and high safety radiation dosimeter using a gel formed from the composition. A gel forming composition for radiation dosimetry comprising a gelator and a compound of Formula (1): ##STR00001##
(wherein R.sub.1 is a hydrogen atom, a halogen atom, an optionally substituted C.sub.1-12 alkyl group, etc.; and R.sub.2 and R.sub.3 are each independently a hydrogen atom, an optionally substituted C.sub.1-12 alkyl group, an optionally substituted monovalent C.sub.6-12 aromatic group, or R.sub.2 and R.sub.3 form a 4- to 8-membered ring together with a carbon atom to which R.sub.2 and R.sub.3 are bonded, and the 4-to 8-membered ring may have 0 to 3 nitrogen atoms, oxygen atoms, or sulfur atoms as a ring atom, provided that R.sub.2 and R.sub.3 are not simultaneously a hydrogen atom).