Mammography apparatus
A mammography apparatus includes an imaging table, in which the imaging table is configured to attachably and detachably mount therein a scattered ray removal grid that removes scattered rays generated by the radiation transmitting through the breast, and in a case in which, in the imaging table, a direction connecting a chest wall side on which a chest wall of the subject is located and a side opposite to the chest wall is defined as a front-rear direction and a direction orthogonal to the front-rear direction is defined as a left-right direction, an opening for attaching and detaching the scattered ray removal grid is provided in the imaging table on at least any one of a left side surface or a right side surface of the imaging table.
1. A mammography apparatus comprising:
an imaging table on which a breast of a subject is placed, which has an imaging surface on which radiation transmitted through the breast is incident, and in which a detector that detects the radiation transmitted through the imaging surface is housed,
wherein the imaging table is configured to attachably and detachably mount therein a scattered ray removal grid that removes scattered rays generated by the radiation transmitting through the breast, and
in a case in which, in the imaging table, a direction connecting a chest wall side on which a chest wall of the subject is located and a side opposite to the chest wall is defined as a front-rear direction and a direction orthogonal to the front-rear direction is defined as a left-right direction, an opening for attaching and detaching the scattered ray removal grid is provided in the imaging table on at least any one of a left side surface or a right side surface of the imaging table.
2. The mammography apparatus according to claim 1 ,
wherein the opening is provided on both the left side surface and the right side surface of the imaging table.
3. The mammography apparatus according to claim 1 ,
wherein the scattered ray removal grid is a grid in which a plurality of transmission parts that transmit the radiation and a plurality of absorption parts that absorb the radiation are alternately arranged and a boundary line between the transmission part and the absorption part extends in one direction, and
the scattered ray removal grid is able to be disposed inside the imaging table in a posture in which the direction in which the boundary line extends is parallel to the left-right direction.
4. The mammography apparatus according to claim 1 ,
wherein a first fixing mechanism that fixes the scattered ray removal grid at a facing position facing a detection surface of the detector is provided inside the imaging table.
5. The mammography apparatus according to claim 4 ,
wherein the first fixing mechanism includes a protrusion that is able to engage with a recess part provided in the scattered ray removal grid.
6. The mammography apparatus according to claim 5 ,
wherein a support member that supports the detector and is disposed on at least a part of a periphery of the detection surface is provided inside the imaging table, and
the protrusion is provided on the support member to protrude along a normal direction of the detection surface.
7. The mammography apparatus according to claim 6 ,
wherein the support member is not provided on the chest wall side of the detector.
8. The mammography apparatus according to claim 1 ,
wherein a guide part that guides the scattered ray removal grid to a facing position facing a detection surface of the detector by engaging with the scattered ray removal grid inserted from the opening is provided inside the imaging table.
9. The mammography apparatus according to claim 8 ,
wherein the guide part is a guide rail that is able to accept the scattered ray removal grid from the left-right direction, and
the guide rail is provided outside a detection range of the radiation in the front-rear direction and the left-right direction.
10. The mammography apparatus according to claim 1 ,
wherein a second fixing mechanism that fixes the scattered ray removal grid at a facing position facing a detection surface of the detector and is provided outside the imaging table is provided.
11. The mammography apparatus according to claim 1 ,
wherein the scattered ray removal grid is provided with a grip member.
12. The mammography apparatus according to claim 1 ,
wherein, in a case in which the scattered ray removal grid is an external grid, a built-in grid that is built in the imaging table is provided in the imaging table as a scattered ray removal grid different from the external grid,
the built-in grid is movable in the imaging table between a facing position facing a detection surface of the detector and a retreat position retreating from the facing position, and
the external grid is inserted into the imaging table in a state in which the built-in grid is moved to the retreat position.