Radiation imaging device
A photographing device, radiation technology, applied in the direction of radiation diagnosis equipment, radiation measurement, radiation diagnosis diaphragm, etc., to achieve the effect of increasing the shielding rate and improving the consistency
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no. 1 approach ＞
[0028] Such as figure 1 As shown, the X-ray CT apparatus of this embodiment includes: an X-ray source 100 for irradiating X-rays; an X-ray detector 101 for two-dimensionally arranging a plurality of detection elements for detecting X-rays; processing such as correction for detection signals of the detection elements , and a signal processing unit 102 that performs control of the device; and an image generating unit 103 that generates an image of the subject 106 using the corrected signal. The X-ray source 100 and the X-ray detector 101 are fixed to the rotating disk 104 at opposing positions, and are configured to rotate relative to the ground around the subject 106 lying on the bed portion 105 . Furthermore, it includes an X-ray source 100 , an X-ray detector 101 , and a rotating disk 104 , which is also referred to as a scanner 110 .
[0029] The X-ray detector 101 is composed of detection element modules 107 arranged in an arc shape centered on the X-ray source 100 . The ...
no. 2 approach ＞
[0045] In the first embodiment, the arrangement of the partition wall portions 202 at equal intervals has been described. When the partition wall portions 202 are arranged at equal intervals and (Expression 3) is not satisfied, scattered rays may pass through between the partition wall portions 202 . Therefore, in the present embodiment, it will be described that the partition wall portion 202 is arranged so that the pitch in the X-ray incident direction (Y) is changed midway in order to prevent the transmission of scattered rays. In addition, similarly to the first embodiment, the upper end of the uppermost partition wall is aligned with the X-ray incident surface 200 .
[0046] use Figure 5 The arrangement of the partition wall portion 202 in this embodiment will be described. Figure 5 Among them, the partition walls 202 are arranged at equal intervals in the channel direction (X), b=s, d>t, and (Formula 3) is not satisfied. In addition, in the X-ray incident direction ...
no. 3 approach ＞
[0050] In 1st Embodiment and 2nd Embodiment, the case where the interval s of the partition wall part 202 in the X-ray incident direction (Y) was equal was demonstrated. The interval s of the partition wall portion 202 is not limited thereto, and in the present embodiment, the partition wall portion 202 is arranged so that the interval s is changed according to the position in the X-ray incident direction (Y). In addition, similarly to the first embodiment, the upper end of the uppermost partition wall is aligned with the X-ray incident surface 200 .
[0051] use Figure 6 The arrangement of the partition wall portion 202 in this embodiment will be described. exist Figure 6 Among them, the partition walls 202 are arranged at equal intervals in the channel direction (X), and in the X-ray incident direction (Y), are arranged at equal intervals in the lower half of the collimator 108, and in the upper half, so as to follow the X-ray incident direction (Y). The position in the...
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