Radiation diagnostic apparatus, radiation detector and output determination method

A radiation detector, comprising:

• a plurality of radiation detection elements arranged in a two-dimensional direction including a first direction and a second direction;
• data collecting circuitry configured to collect, for each of a plurality of energy bins of an X-ray, a first count relating to a first detection element and a plurality of second counts respectively relating to a plurality of second detection elements around the first detection element;
• and
• processing circuitry configured to determine, for each of the plurality of energy bins, an output corresponding to a reconstruction position of the first detection element based on the first count and the plurality of second counts,
• wherein the output corresponding to the reconstruction position is an ideal output relating to the first detection element when the reconstruction position of the first detection element is assumed to be an incident position of the X-ray,
• wherein the processing circuitry is configured to determine the output corresponding to the reconstruction position by using, for each of the plurality of energy bins, a first weight corresponding to the first count and a plurality of second weights respectively corresponding to the plurality of second counts,
• wherein the first detection element is located on one side of a midplane in the first direction, and the plurality of second detection elements include at least one second detection element located farther from the midplane than the first detection element in the first direction, and
• wherein, for each of the plurality of energy bins, the first weight decreases as a representative energy of the energy bin becomes higher, and a second weight for the at least one second detection element located farther from the midplane increases as the representative energy of the energy bin becomes higher.

An output determination method, comprising:

• collecting, for each of a plurality of energy bins of an X-ray, a first output relating to a first detection element and a plurality of second outputs respectively relating to a plurality of second detection elements around the first detection element, the first detection element and the plurality of second detection elements being included in a plurality of radiation detection elements arranged in a two-dimensional direction including a first direction and a second direction;
• and
• determining, for each of the plurality of energy bins, an output corresponding to a reconstruction position of the first detection element based on the first output and the plurality of second outputs,
• wherein the output corresponding to the reconstruction position is an ideal output relating to the first detection element when the reconstruction position of the first detection element is assumed to be an incident position of the X-ray,
• wherein the determining includes using, for each of the plurality of energy bins, a first weight corresponding to the first output and a plurality of second weights respectively corresponding to the plurality of second outputs,
• wherein the first detection element is located on one side of a midplane in the first direction, and the plurality of second detection elements include at least one second detection element located farther from the midplane than the first detection element in the first direction,
• wherein, for each of the plurality of energy bins, the first weight decreases as a representative energy of the energy bin becomes higher, and a second weight for the at least one second detection element located farther from the midplane increases as the representative energy of the energy bin becomes higher, and
• further comprising generating spectral image data based on outputs corresponding to the reconstruction position for the plurality of energy bins.