X-ray CT apparatus, radiation detector and manufacturing method thereof
A radiation detection and X-ray technology, which is applied in the directions of instruments for radiation diagnosis, imaging devices, radiation intensity measurement, etc., can solve the problems of uneven thickness and spacing of collimator plates, and achieve the effect of uniform spacing
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no. 1 Embodiment approach
[0022] First, the first embodiment will be described. figure 1 It is a diagram showing the configuration of the X-ray CT apparatus 100 according to the first embodiment. Such as figure 1 As shown, the X-ray CT apparatus 100 has a scanning frame (gantry) 110, a high voltage generator 120, a preprocessing device 130, a reconstruction device 140, an image processing device 150, a storage device 160, an input device 170, a display device 180 and system controller (system controller) 190 .
[0023] The gantry 110 irradiates the subject with X-rays, detects the X-rays transmitted through the subject, and generates raw data. This gantry 110 has an X-ray tube 111, a slip ring (slipring) 112, an X-ray detector 200, a frame (flame) 113, a rotating part 114, a data (date) acquisition circuit (Date Acquisition System: DAS) 115, a non-contact data transmission device 116.
[0024] The X-ray tube 111 generates X-rays for irradiating a subject by a tube voltage and a tube current suppl...
no. 2 Embodiment approach
[0049] Next, a second embodiment will be described. In this embodiment. An example of the method of fixing the collimator module 223 described in the first embodiment will be described. Figure 8 It is a figure which shows the fixing method of the collimator module 223 which concerns on 2nd Embodiment.
[0050] Such as Figure 8 As shown, in this embodiment, a plurality of grooves 222b are formed along the incident direction of X-rays on the surface of the collimator plate 222a included in the collimator base 222 . In addition, when the collimator module 223 is arranged in a section defined by the collimator panel 222a, the end of the collimator panel 223a included in the collimator module 223 abuts against the groove 222b. Here, the collimator module 223 is positioned in the partitions defined by the collimator panel 222a when the end of the collimator panel 223a abuts against the groove 222b formed in the collimator panel 222a.
[0051] In addition, the number of grooves...
no. 3 Embodiment approach
[0054] Next, a third embodiment will be described. In this embodiment, another example different from that in the second embodiment will be described with respect to the fixing method of the collimator module 223 described in the first embodiment. Figure 9 and Figure 10 It is a figure which shows the fixing method of the collimator module 223 which concerns on 3rd Embodiment.
[0055] Such as Figure 9 As shown, in the present embodiment, when the collimator module 223 is disposed in the subregion divided by the collimator panel 222a, the end of the collimator panel 223a is engaged with a part of the collimator panel 222a (refer to Figure 9 within circle A shown).
[0056] Specifically, in the present embodiment, an engaging portion is formed at an end portion of the collimator plate 223 a included in the collimator module 223 . Also, on the collimator plate 222 a included in the collimator base 222 , an engaged portion that engages with an engaging portion formed at an...
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