JP2005218462A5 - - Google Patents

Claims (7)

An X-ray source for irradiating the subject with X-rays;
The X-ray source includes a plurality of two-dimensionally arranged X-ray detection elements. The X-ray detection elements convert the transmitted X-rays of the subject into electric signals and read out the electric signals. An X-ray detector for detecting a signal of the transmitted X-ray,
An image display unit that displays a transmitted X-ray signal detected by the X-ray detector as an X-ray image;
In an X-ray diagnostic apparatus comprising:
The position information of at least the X-ray source of the X-ray source and the X-ray detector is calculated, the calculated position information is associated with the X-ray detection element to be read, and the corresponding X-ray detection element is used. Control means for causing the X-ray detector to detect a transmission X-ray signal of these X-ray detection elements by reading out an electrical signal and displaying the detected transmission X-ray signal on the image display unit as an X-ray image; An X-ray diagnostic apparatus comprising: The control unit calculates a plurality of pieces of position information of the X-ray source, associates the calculated position information with the X-ray detection area to be read, and reads an electric signal from the associated X-ray detection area. The X-ray diagnostic apparatus according to claim 1, wherein the X-ray detector detects a transmitted X-ray signal of each X-ray detection region by using the X-ray detector. The X-ray diagnostic apparatus according to claim 1, further comprising:
An X-ray diaphragm disposed on the X-ray irradiation side of the X-ray source and shielding X-rays irradiated to the subject;
The control means includes inserting the X-ray diaphragm so as to shield X-rays incident on X-ray detection elements that do not need to be read out of the X-ray detection elements constituting the X-ray detector. The X-ray diagnostic apparatus according to any one of claims 1 to 3, further comprising:
An X-ray compensation filter that is disposed on the X-ray irradiation side of the X-ray source and attenuates X-rays irradiated to the subject;
A halation signal detection means for detecting the position of the X-ray detection element in which the halation signal is generated from the transmitted X-ray signal detected by the X-ray detector,
The control means attenuates X-rays incident on the X-ray detection element in which the halation signal detected by the halation signal detection means is generated among the X-ray detection elements constituting the X-ray detector. Inserting the X-ray compensation filter. The X-ray diagnostic apparatus according to any one of claims 1 to 4, further comprising:
A support for supporting the X-ray source at one end and the X-ray detector at the other end;
A column erected on the floor that supports the support;
A bed for placing the subject between the X-ray source and the X-ray detector supported by the support;
Driving means for driving the support and the bed to move to a position to obtain an X-ray image of the subject; and
The control unit includes a position detector on each of the support and the bed, and the position of at least the X-ray source among the X-ray source and the X-ray detector based on a position detected from the position detector. Including calculating information. The X-ray diagnostic apparatus according to any one of claims 1 to 4, further comprising:
A support for supporting the X-ray source at one end and the X-ray detector at the other end;
A telescopic support portion that has a function of supporting the support and can freely extend from the ceiling to the floor; and
A bed for placing the subject between the X-ray source and the X-ray detector supported by the support;
Driving means for driving the support and the bed to move to a position to obtain an X-ray image of the subject; and
The control unit includes a position detector on each of the support and the bed, and the position of at least the X-ray source among the X-ray source and the X-ray detector based on a position detected from the position detector. Including calculating information. The X-ray diagnostic apparatus according to any one of claims 1 to 4, further comprising:
A support for supporting the X-ray source at one end and the X-ray detector at the other end;
A mobile trolley on which a column supporting this support is erected,
Drive means for moving the movable carriage to a position on which the subject is sleeping and then moving the carriage to a position to obtain an X-ray image of the subject by driving the support;
The control unit includes a position detector in the support, and calculates position information of at least the X-ray source among the X-ray source and the X-ray detector based on positions detected from the position detectors. Including that.