| US 7,526,070 B2 | ||
| X-ray CT apparatus collimator, method of manufacturing the X-ray CT apparatus collimator, and X-ray CT apparatus | ||
| Kenji Igarashi, Utsunomiya (Japan); Masaharu Shimizu, Nasushiobara (Japan); Akiji Wakabayashi, Otawara (Japan); Yasuo Saito, Nasushiobara (Japan); Machiko Iso, Nasushiobara (Japan); Tsuguo Kishi, Yokohama (Japan); Shigeru Sakuta, Urayasu (Japan); Masaru Kitamura, Yokohama (Japan); Ryuhachiro Doji, Yokohama (Japan); Hideki Ide, Yokohama (Japan); Shuya Nambu, Nasushiobara (Japan); Masahiko Yamazaki, Utsunomiya (Japan); Katsuya Yamada, Kamakura (Japan); and Yasutada Nakagawa, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan); and Toshiba Medical Systems Corporation, Otawara-shi (Japan) | ||
| Filed on Apr. 14, 2006, as Appl. No. 11/403,813. | ||
| Claims priority of application No. 2005-118772 (JP), filed on Apr. 15, 2005. | ||
| Prior Publication US 2006/0233298 A1, Oct. 19, 2006 | ||
| Int. Cl. G21K 1/02 (2006.01); G21K 1/00 (2006.01) | ||
| U.S. Cl. 378—149 [378/147; 378/19] | 22 Claims |
| 1. An X ray computer tomography apparatus comprising:
an X ray emitting unit which emits X rays;
an X ray detection unit which is placed to face the X ray emitting unit and detects X rays incident to a detection surface;
and
a collimator unit which is placed on the X ray incident side of an X ray detector to remove scattered X rays and includes
a plurality of collimator plates and a support unit, the plurality of collimator plates being arranged along a predetermined
direction, and the support unit supporting each of the collimator plates along at least three sides thereof in such a manner
that a surface of each of the collimator plates is substantially parallel to an X ray incident direction from the X ray emitting
unit to the detection surface;
wherein:
the support unit includes:
a first support member which includes a plurality of first grooves provided along the predetermined direction, each of the
first grooves being formed along the X ray incident direction;
a second support member which is placed parallel to the first support unit and includes a plurality of second grooves provided
along the predetermined direction so as to correspond to said plurality of first grooves, each of the second grooves being
formed along the X ray incident direction; and
a third support member which includes a plurality of third grooves for fitting of detection surface side peripheries of the
collimator plates fitted in the first grooves and the second grooves, and is provided on the detection surface side of the
plurality of collimator plates;
wherein the support unit further comprises a fourth support member which includes a plurality of fourth grooves for fitting
of X ray emitting unit side peripheries of the collimator plates fitted in the first grooves and the second grooves, and is
provided on the X ray emitting unit side of the plurality of collimator plates.
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