Provided herein is a dosimetry device for quantifying the dosage of radiation emitted from a radiation source, the device comprising: (i) a radiation dose indicator; (ii) an optical means to capture the color change; and (iii) a software means to compare the optical density of the dose indicator as compared to a predetermined calibration curve. Also provided herein is a method of quantifying the dosage of radiation emitted from the radiation source. Further provided herein is use of said dosimetry device in various medical, food and industrial applications.

Provided herein is a dosimetry device for quantifying the dosage of radiation emitted from a radiation source, the device comprising: (i) a radiation dose indicator; (ii) an optical means to capture the color change; and (iii) a software means to compare the optical density of the dose indicator as compared to a predetermined calibration curve. Also provided herein is a method of quantifying the dosage of radiation emitted from the radiation source. Further provided herein is use of said dosimetry device in various medical, food and industrial applications.

Provided herein is a phantom and a phantom system, the phantom including a plurality of blocks combined having different elastic modulus, and thus may be easily manufactured in various shapes, movements, and densities and may exactly imitate movements of a tissue such as in a lung that has high volume change rates and has a high possibility that a position and shape of a tumor may change, thereby providing an effect of being used in replacement of patients when evaluating 4D-CT performance and measuring radiation amounts.

Provided herein is a phantom and a phantom system, the phantom including a plurality of blocks combined having different elastic modulus, and thus may be easily manufactured in various shapes, movements, and densities and may exactly imitate movements of a tissue such as in a lung that has high volume change rates and has a high possibility that a position and shape of a tumor may change, thereby providing an effect of being used in replacement of patients when evaluating 4D-CT performance and measuring radiation amounts.

The present invention relates to a metal-organic hybrid lattice material and the application in the detection of radiation sources. In the invention, a water-soluble thorium salt and 2,2′:6′,2′-terpyridine-4′-carboxylic acid are subjected to a solvothermal reaction in water and an organic mixed solvent to obtain a metal-organic hybrid lattice material. The crystalline material produces radiation-induced discoloration and photoluminescence change under ultraviolet light, X-ray, γ-ray, β-ray, and so on. The material is useful for qualitative and quantitative detection and calibration after high-dose irradiation. Compared with the traditional radiation-induced color change indicator labels, the material achieves the visual qualitative and quantitative detection and has strong radiation stability, high reuse rate, wide detection range, and good linear relationship, to solve the problem of traditional materials relying on professional optical equipment to quantify the radiation dose.

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.

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 radiation imaging apparatus comprising an imaging region where conversion elements used for an imaging operation of obtaining a radiation image corresponding to incident radiation are arranged, detecting portions in each of which a detecting element used to detect a radiation dose entering the imaging region is arranged, and a controller is provided. The controller is configured to perform, before the imaging operation, an offset readout operation of reading out offset signals of the detecting elements from the detecting portions, detect, in the imaging operation, the radiation dose entering the imaging region by using signals output from the detecting elements during irradiation with radiation and the offset signals, and be capable of changing, during a period of the offset readout operation, an order of reading out the offset signals from the detecting portions.

A radiation imaging apparatus comprising an imaging region where conversion elements used for an imaging operation of obtaining a radiation image corresponding to incident radiation are arranged, detecting portions in each of which a detecting element used to detect a radiation dose entering the imaging region is arranged, and a controller is provided. The controller is configured to perform, before the imaging operation, an offset readout operation of reading out offset signals of the detecting elements from the detecting portions, detect, in the imaging operation, the radiation dose entering the imaging region by using signals output from the detecting elements during irradiation with radiation and the offset signals, and be capable of changing, during a period of the offset readout operation, an order of reading out the offset signals from the detecting portions.

A radiation imaging apparatus comprising an imaging region where conversion elements used for an imaging operation of obtaining a radiation image corresponding to incident radiation are arranged, detecting portions in each of which a detecting element used to detect a radiation dose entering the imaging region is arranged, and a controller is provided. The controller is configured to perform, before the imaging operation, an offset readout operation of reading out offset signals of the detecting elements from the detecting portions, detect, in the imaging operation, the radiation dose entering the imaging region by using signals output from the detecting elements during irradiation with radiation and the offset signals, and be capable of changing, during a period of the offset readout operation, an order of reading out the offset signals from the detecting portions.