X-ray measuring device
A measurement device, X-ray technology, applied in the fields of radiological diagnostic equipment, medical science, diagnosis, etc., can solve the problem of excessive evaluation
Active Publication Date: 2021-08-24
HITACHI HEALTHCARE MFG LTD
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Problems solved by technology
Conversely, if the areas of each virtual measuring surface 7 are equal, that is, the virtual measuring surface 7 is defined at an equal position from the X-ray irradiator, there will be an over-evaluation (over-calculation) quality for the thick and thin parts of the body. Thick parts are too small to evaluate (calculate too small) the quality of the problem
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[0033] Hereinafter, the X-ray measurement device of the present invention will be described. The X-ray measurement device of the present invention is used for medical purposes, etc., irradiates a subject with X-rays, and measures the mass of the subject based on detection data obtained by detecting the X-rays transmitted through the subject. In addition, in this X-ray measurement device, in addition to measuring the mass of the subject, it is also possible to measure the bone mineral mass, bone density, body fat percentage, etc. of the subject based on the detection data.
[0034] figure 1 It is an external perspective view of the X-ray irradiation detector 10 included in the X-ray measurement device of the present invention. figure 2 It is a side view showing a state where an imaging table and a subject are installed in the X-ray irradiation inspection machine 10 . In addition, in figure 1 with figure 2 Here, let the width direction (left-right direction) of the X-ray i...
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The invention relates to an X-ray measuring device. A plurality of detection elements (32a) are irradiated with fan-beam X-rays from an X-ray irradiator (30). The surface density of each subject portion (22a) is calculated based on each detection data detected by each detection element (32a), that is, the attenuation amount of X-rays. In addition, the body thickness of each subject portion (22a) is calculated based on each detection data. Based on the calculated body thickness, a virtual measurement surface is defined at the center position in the body thickness direction of each subject portion (22a). Multiplying the area density of each subject part (22a) by the area of each virtual measurement surface defined in each subject part (22a) to calculate a plurality of elements representing the mass of each subject part (22a) unit mass. The mass of the object to be detected (22) is calculated by summing up the unit mass of a plurality of elements.
Description
technical field [0001] The invention relates to an X-ray measuring device, in particular to a technique for calculating the mass of a detected object. Background technique [0002] Currently, X-ray measurement devices are used in medical institutions and the like. In an X-ray measurement device, a subject is irradiated with X-rays, and various measurements are performed based on the attenuation amount of the X-rays transmitted through the subject. Conventionally, X-ray measuring devices generally measure bone mineral mass, body fat percentage, and the like, but in recent years a technique for measuring the mass of a subject using X-ray measuring devices has been proposed. For example, JP 2013-532823 A discloses a technique for obtaining the weight of a test object using an X-ray measuring device. [0003] As one method of measuring the mass of a subject in an X-ray measuring device, the following methods are listed. Figure 5 It is a diagram for explaining a conventional m...
Claims
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IPC IPC(8): A61B6/00
CPCA61B6/00A61B6/4078A61B6/4208A61B6/44A61B6/505A61B6/582
Inventor 实政光久宫本高敬足立龙太郎川上嘉人
Owner HITACHI HEALTHCARE MFG LTD