X-ray CT apparatus
View Patent ↗An X-ray CT apparatus has: a plurality of X-ray detection elements arranged in a matrix form; a QV amplifier unit having a plurality of QV amplifiers; a first connection unit connecting the plurality of X-ray detection elements and the QV amplifier unit; an AD converter unit having a plurality of AD converters; and a second connection unit connecting the QV amplifier unit and the AD converter unit. The plurality of X-ray detection elements and the QV amplifier unit are connected and the QV amplifier unit and the AD converter unit are connected so as to make different at least one of a signal processing characteristic of the QV amplifier unit and signal a processing characteristic of the AD converter unit for each X-ray detection element of the plurality of X-ray detection elements or for each of an adjacent plurality of X-ray detection elements.
1. An X-ray CT apparatus comprising:
an X-ray detector including a plurality of X-ray detection arrays, each X-ray detection array including a plurality of X-ray detection elements arranged in a matrix, the matrix having a plurality of columns of X-ray detection elements arranged in a channel direction, the channel direction being substantially orthogonal to a body axial direction, and a plurality of rows of X-ray detection elements arranged in a slice direction which is substantially parallel to the body axial direction;
an amplifier unit having a plurality of amplifiers;
a first connection unit connecting the plurality of X-ray detection elements and the amplifier unit;
an AD converter unit having a plurality of AD converters; and
a second connection unit connecting the amplifier unit and the AD converter unit,
wherein each of the plurality of amplifiers is connected to a different group of X-ray detection elements from among the plurality of X-ray detection elements within one of the plurality of X-ray detection arrays, and none of the X-ray elements within any of the groups of X-ray detection elements connected to a single amplifier is directly adjacent to another X-ray detection element within the same group in either the channel direction or the slice direction in the matrix of the X-ray detection array.
2. An X-ray CT apparatus comprising:
an X-ray detector including a plurality of X-ray detection arrays, each X-ray detection array including a plurality of X-ray detection elements arranged in a matrix, the matrix having a plurality of columns of X-ray detection elements arranged in a channel direction, the channel direction being substantially orthogonal to a body axial direction, and a plurality of rows of X-ray detection elements arranged in a slice direction which is substantially parallel to the body axial direction;
an amplifier unit which has a plurality of amplifier chips each including a plurality of amplifiers;
a first connection unit connecting the plurality of X-ray detection elements and the amplifier unit;
an AD converter unit having a plurality of AD converters; and
a second connection unit connecting the amplifier unit and the AD converter unit,
wherein each of the plurality of amplifiers is connected to a different group of X-ray detection elements from among the plurality of X-ray detection elements within one of the plurality of X-ray detection arrays, and none of the X-ray elements within any of the groups of X-ray detection elements connected to a single amplifier is directly adjacent to another X-ray detection element within the same group in a slice direction in the matrix of the X-ray detection array, and at least two X-ray detection elements that are adjacent to each other in the slice direction in the matrix of the X-ray detection array are connected to different amplifier chips.
3. An X-ray CT apparatus comprising:
an X-ray detector including a plurality of X-ray detection arrays, each X-ray detection array including a plurality of X-ray detection elements arranged in a matrix, the matrix having a plurality of columns of X-ray detection elements arranged in a channel direction, the channel direction being substantially orthogonal to a body axial direction, and a plurality of rows of X-ray detection elements arranged in a slice direction which is substantially parallel to the body axial direction;
an amplifier unit having a plurality of amplifiers;
a first connection unit connecting the plurality of X-ray detection elements and the amplifier unit;
an AD converter unit which has a plurality of AD chips each including a plurality of AD converters; and
a second connection unit connecting the amplifier unit and the AD converter unit,
wherein each of the plurality of AD chips is connected to a different group of X-ray detection elements from among the plurality of X-ray detection elements within one of the X-ray detection arrays, and none of the X-ray elements within any of the groups of X-ray detection elements connected to a single AD chip is directly adjacent to another X-ray detection element within the same group in the slice direction in the matrix of the X-ray detection array.
4. The X-ray CT apparatus according to claim 3 ,
wherein the amplifier unit has a plurality of amplifier chips each including a plurality of amplifiers, and
at least two X-ray detection elements that are adjacent to each other in the slice direction in the matrix of the X-ray detection array are connected to different amplifier chips.
5. An X-ray CT apparatus comprising:
an X-ray detector including a plurality of X-ray detection arrays, each X-ray detection array including a plurality of X-ray detection elements arranged in a matrix, the matrix having a plurality of columns of X-ray detection elements arranged in a channel direction, the channel direction being substantially orthogonal to a body axial direction, and a plurality of rows of X-ray detection elements arranged in a slice direction which is substantially parallel to the body axial direction;
an amplifier unit having a plurality of amplifiers;
a first connection unit connecting the plurality of X-ray detection elements and the amplifier unit;
an AD converter unit having a plurality of AD converters; and
a second connection unit connecting the amplifier unit and the AD converter unit,
wherein each of the plurality of AD converters is connected to a different group of X-ray detection elements from among the plurality of X-ray detection elements within one of the X-ray detection arrays, and none of the X-ray elements within any of the groups of X-ray detection elements connected to a single AD converter is directly adjacent to another X-ray detection element within the same group in either the channel direction or the slice direction in the X-ray detector matrix of the X-ray detection array.