A radiation CT apparatus that can gain a clear tomogram without a rotation axis runout and without fail through a single CT scan and a simple operation is provided. When the data on the projection with radiation collected through a CT scan is first reconstructed through an arithmetic operation by a reconstruction arithmetic operation unit 13, temporary coordinates that have been set in advance as the coordinates of the projected rotation axis so as to construct a tomogram along a predetermined sliced surface are used, this tomogram is displayed on the screen for changing the rotation axis coordinates that include the temporary coordinates, and the coordinates of the projected rotation axis are shifted by any amount in any direction through an operation on the screen so that a reconstruction arithmetic operation is again carried out in the reconstruction arithmetic operation unit 13.

A phantom body (PB) for use in a differential phase contrast imaging apparatus (IM) for calibration of same. The phantom body (PB) allows for simultaneous calibration of three different image signal channels, namely refraction, phase shift and small angle scattering.

There is provided a System and Method For Determining The Radiological Composition of Material Layers Within a Conduit. The system and method disclosed is equally applicable to pipes, vessels, and conduits as well as medical applications such as determining vessel thickness, occlusion, scarring, or the like in humans and animals. A phantom setup is disclosed that has a phantom containing a test standard such as a reactor water test standard, removable plates, a collimator and probe with a spectrometer display. The phantom setup provides a baseline data set that can be used in conjunction with field measurements to determine the composition of materials within the conduit, such as corrosion or the like. The baseline data set may be semi-logarithmic and contains spectrometer readings of various plate thicknesses or quantities of plates.

A correction amount specifying apparatus comprises circuitry for storing diffraction data including a combination of the diffraction angle of the irradiation X-rays with respect to the sample rotation angle and the sample surface height, the diffraction data being acquired by irradiating X-rays to a standard sample that is an aggregate of isotropic and stress free crystal particles, determining a first correspondence relationship based on the diffraction data, and specifying a correction amount of the sample surface height with respect to a desired sample rotation angle and a desired diffraction angle based on the first correspondence relationship.

According to one embodiment, a radiation-measurement-instrument support device comprising: a cylindrical casing configured to house at least one phantom and a radiation measurement instrument and formed in a cylindrical shape; a base configured to rotatably support the cylindrical casing in a circumferential direction in a state where a cylindrical axis of the cylindrical casing is directed in a horizontal direction and fix the cylindrical casing at an arbitrary rotation angle in the circumferential direction; and an angle display configured to display the rotation angle.

Provided are a method, a system, and a storage medium for obtaining an energy spectrum. The method comprises: obtaining a first depth dose curve corresponding to a first energy and a second depth dose curve corresponding to a second energy; obtaining, based on the first depth dose curve and the second depth dose curve, a first set of dose values and a second set of dose values along a depth direction, respectively; determining a relationship between the first depth dose curve and the second depth dose curve based on the first set of dose values and the second set of dose values; obtaining a first energy spectrum corresponding to the first depth dose curve; and determining a second energy spectrum corresponding to the second depth dose curve based on the first energy spectrum and the relationship between the first depth dose curve and the second depth dose curve.

An additional mechanism to an apparatus is minimized, and a user's tasks are reduced, thereby enabling acquisition of calibration data.

A second phantom of a second base material, which has different thickness portions, is installed on a filter of a photon counting X-ray CT apparatus, the filter is moved using a filter drive mechanism such that X-rays from an X-ray tube are transmitted through a desired thickness portion of the second phantom, and a computing device radiates X-rays from the X-ray tube in a state in which a first phantom of a first base material, which has a smaller linear attenuation coefficient than the second base material, is inserted into an opening portion such that X-rays are transmitted through the first phantom of the first base material, and acquires projection data based on a detection value output by a detector.

Systems and methods are provided for calibrating computed tomography (CT) system. In one example, a method for a computed tomography (CT) system comprises, during a calibration of the CT system, measuring a position of a detector element of a detector array of the CT system using a wire of a wire phantom coupled to a table of the CT system, during a rotational scan performed using the CT system; and during a subsequent scan performed on a subject using the CT system, applying the measured position of the detector element rather than a design target position of the detector element during reconstruction of an image from projection data acquired via the CT system; and displaying the reconstructed image on a display device of the CT system.

These disclosures provide a method of verifying detection capability of an X-ray inspection apparatus with respect to a product type, such as a food product, where a body is subject to X-rays propagating through the body in an inspection zone of the X-ray inspection apparatus, where the body is a phantom mainly made from artificial material and including at least two regions (A, B) with different propagation path lengths, a difference between the propagation path lengths correlating with a difference of measured X-ray attenuation arising between regions of a product sample of the product type mimicked by the phantom whose regions correspond to the regions (A, B) of the phantom.

The computed tomography device has a gantry with an opening, and a holding structure to hold a component relative to the opening. The holding structure has a component support surface that positively counteracts lowering of the component relative to the holding structure along a first connection axis once the component has been advanced from above along the first connection axis to establish a form-fit connection between the component and the component support surface. The holding structure also has an orientation structure that positively counteracts twisting of the component relative to the holding structure about the first connection axis once the component has been advanced from above along the first connection axis to establish a form-fit connection between the component and the component support surface.