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Radiation imaging apparatus and method

A technology of radiation imaging and equipment, which is applied in computerized tomography scanners, echo tomography, etc., can solve the problem of not being able to solve the problem of all truncation of angle detectors, and achieve the effect of reducing equipment cost and patient dose

Active Publication Date: 2017-03-29
LARGEV INSTR CORP LTD
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Problems solved by technology

[0006] Non-Patent Document 2 (K.Sourbelle et al.: Reconstruction from truncated projections in CT using adaptive detruncation, Eur Radiol, No.15, pp 1008-1014, 2005) provides a processing method for truncation at certain angles, It can be used for imaging of internal organs of the thoracic cavity, but it cannot solve the problem of all truncated detectors at all angles

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  • Radiation imaging apparatus and method
  • Radiation imaging apparatus and method
  • Radiation imaging apparatus and method

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Embodiment Construction

[0025] Specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described here are only used for illustration and are not used to limit the present invention. In the following description, in order to provide a thorough understanding of the present invention, numerous specific details are set forth. However, it is obvious to a person of ordinary skill in the art that it is not necessary to adopt these specific details to implement the present invention. In other instances, in order to avoid obscuring the present invention, well-known structures, materials, or methods are not specifically described.

[0026] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "example" mean that a specific feature, structure, or characteristic described in conjunction with the embodiment or example is included in the present invention In at least one embodiment. Therefore, the phrases "in ...

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Abstract

The invention discloses a radiation imaging device and a radiation imaging method. In the radiation imaging device, a non-radiation sensor is additionally arranged on a CT (computed tomography) apparatus and is used for obtaining the distance between a radiation source and the surface of an object to be scanned and the distance between the surface of a detector and the surface of the object to be scanned to further obtain the size and the outer contour information of the object to be scanned; according to the information, an automatic collimation system is controlled in real time to regulate the width and the strength of a ray beam and / or the position of the detector, and the information is sent to a data reconstruction system to be applied to CT faultage construction.

Description

Technical field [0001] The present technology relates to the field of radiation imaging, especially the field of CT imaging technology, for example, to a radiation imaging device and a corresponding method. Background technique [0002] In the field of radiation imaging, how to reduce the patient's absorbed dose while ensuring image quality has always been a key research direction. In order to reduce the effective absorbed dose of the patient, the most direct way is to reduce the number of photons that reach the patient, usually by reducing the light source dose rate, reducing the irradiation area, and shortening the irradiation time. For example, there is a method to reduce the patient's dose by shortening the irradiation time. It uses a pulsed X-ray machine and uses a control program to ensure that the beam is emitted only during the photon accumulation period of the detector, and during the A / D conversion period of the detector. Stop beaming. For another example, the butterf...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
Inventor 张文宇吴宏新王亚杰杨光明
Owner LARGEV INSTR CORP LTD
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