X-ray imaging apparatus and X-ray imaging method
First Claim
Patent Images
1. An X-ray imaging apparatus comprising:
- an X-ray generating unit for generating pulse-shaped X-rays;
a splitting element that spatially splits X-rays generated by said X-ray generating unit;
a detecting unit that detects intensity of each of the split X-rays split by said splitting element and transmitted through a detection object;
a transport unit that moves said X-ray generating unit, said splitting element, the detection object or said detecting unit; and
a transport control unit that controls a scanning time of the X-rays irradiated onto the detection object by means of said transport unit,wherein said detecting unit comprises a time delay integration type detecting unit which has a plurality of pixel areas and is so arranged that each of the split X-rays split by said splitting element is discretely irradiated over two or more than two pixel areas of said detecting unit, andwherein said X-ray generating unit and said detecting unit operate with a cycle period of X-ray pulse generation and with a cycle period of electric charge transfer, respectively, and wherein those periods are synchronized such that X-rays are irradiated onto the detection object between timing T0 and timing T1 and X-rays are not irradiated onto the detection object between timing T1 and timing T2 while electric charge transfer is performed in said detecting unit at the timings T0, T1 and T2.
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Abstract
An X-ray imaging apparatus and an X-ray imaging method can alleviate the influence of scattered X-rays relative to the obtained image. A differential phase contrast image or a phase contrast image of a detection object is computed by using a splitting element and an exposure control unit that synchronizes the X-ray scanning speed and the image acquisition speed of a detecting unit.
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Citations
13 Claims
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1. An X-ray imaging apparatus comprising:
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an X-ray generating unit for generating pulse-shaped X-rays; a splitting element that spatially splits X-rays generated by said X-ray generating unit; a detecting unit that detects intensity of each of the split X-rays split by said splitting element and transmitted through a detection object; a transport unit that moves said X-ray generating unit, said splitting element, the detection object or said detecting unit; and a transport control unit that controls a scanning time of the X-rays irradiated onto the detection object by means of said transport unit, wherein said detecting unit comprises a time delay integration type detecting unit which has a plurality of pixel areas and is so arranged that each of the split X-rays split by said splitting element is discretely irradiated over two or more than two pixel areas of said detecting unit, and wherein said X-ray generating unit and said detecting unit operate with a cycle period of X-ray pulse generation and with a cycle period of electric charge transfer, respectively, and wherein those periods are synchronized such that X-rays are irradiated onto the detection object between timing T0 and timing T1 and X-rays are not irradiated onto the detection object between timing T1 and timing T2 while electric charge transfer is performed in said detecting unit at the timings T0, T1 and T2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An X-ray imaging method comprising the steps of:
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spatially splitting pulsed-shaped X-rays generated by an X-ray generating unit; irradiating the spatially split X-rays onto a detection object; and detecting the intensity of the X-rays transmitted through the detection object by means of a detecting unit, while synchronizing a scanning time of irradiating X-rays onto the detection object and an image acquisition time of the detecting unit, wherein the detecting unit is a time delay integration type detecting unit which has a plurality of pixel areas and each of the split X-rays is discretely irradiated over two or more than two pixel areas of the detecting unit, and wherein the X-ray generating unit and the detecting unit operate with a cycle period of X-ray pulse generation and with a cycle period of electric charge transfer, respectively, and wherein those periods are synchronized such that X-rays are irradiated onto the detection object between timing T0 and timing T1 and X-rays are not irradiated onto the detection object between timing T1 and timing T2 while electric charge transfer is performed in the detecting unit at the timings T0, T1 and T2. - View Dependent Claims (11, 12, 13)
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Specification