JP2020078462A5

JP2020078462A5 -

Info

Publication number: JP2020078462A5
Application number: JP2018213016A
Authority: JP
Filing date: 2018-11-13
Publication date: 2021-12-09
Anticipated expiration: 2038-11-13

Claims

A scanning unit that scans the subject using X-rays and collects projection data based on the X-rays.
A monitoring unit that monitors the body movement of the subject in parallel with the scan and acquires body movement information corresponding to the projection data.
A reconstruction processing unit that applies weights according to the body movement information to the projection data, performs reconstruction processing, and generates reconstruction image data.
X-ray diagnostic system.

The body movement information includes information indicating the presence or absence of the body movement or the degree of the body movement.
The reconstruction processing unit has a degree to which the first projection data collected when the body movement is absent or the body movement is greater than the body movement in the first projection data. The X-ray diagnostic system according to claim 1, wherein a weight less than the weight applied to the second projection data collected when is small.

The scanning unit collects the projection data for each of the plurality of views for the subject.
The X-ray diagnosis according to claim 2, wherein a weight larger than the weight for the second projection data is applied to the third projection data collected for the view facing the view when the first projection data is collected. system.

The X-ray diagnostic system according to claim 3, wherein the third projection data is data projected at a position shifted by 180 ° with respect to the view of the first projection data.

For a value β that is greater than 0 and less than or equal to 1.
The X-ray diagnostic system according to claim 3 or 4, wherein when the weight for the first projection data is 1-β, the weight for the third projection data is 1 + β.

For a predetermined value α that is greater than 0 and less than or equal to 1.
The minimum value of the weight for the first projection data is 1-α.
The maximum value of the weight for the third projection data is 1 + α.
The X-ray diagnostic system according to any one of claims 3 to 5.

The weighting for the first projection data is claimed to be continuously changed by a sigmoid function, a sinc function or a linear function, or changed by a step function in the region where the first projection data belongs to the body movement. 3. The X-ray diagnostic system according to any one of claims 6.

The X-ray diagnostic system according to any one of claims 1 to 7, wherein the body movement information acquired by the monitoring unit is added to and stored in the projection data at the timing when the scanning unit scans.

The body movement information acquired by the monitoring unit for the projection data scanned by the scanning unit is stored independently of the projection data and in association with the projection data, and the reconstruction processing unit reconstructs the image. The X-ray diagnostic system according to any one of claims 1 to 7, wherein weights are added and reconstructed based on the body movement information at the timing of configuration.

When the body movement information acquired by the monitoring unit is information acquired in a predetermined region of the subject, the reconstruction processing unit receives the data belonging to the predetermined region in the projection data. The X-ray diagnostic system according to any one of claims 1 to 8, wherein the reconstruction process is performed by applying weights.

A display unit that displays a reconstructed image based on the reconstructed image data reconstructed by the reconstructed processing unit, and a display unit.
An input unit in which the user confirms the reconstructed image displayed on the display unit and changes parameters related to the weight, and
The X-ray diagnostic system according to any one of claims 1 to 10, further comprising.

An acquisition unit that acquires a group of projection data based on the X-rays collected by the scanning unit that executes a scan using X-rays on the subject, and an acquisition unit that acquires the projection data group based on the X-rays from the scanning unit.
The information given to the projection data group is extracted, and the projection data corresponding to the extracted information in the projection data group is reconstructed by applying weights corresponding to the extracted information. A reconstruction processing unit that performs processing and generates reconstructed image data that is image data in which the influence of the body movement of the subject is reduced.
Reconstruction processing system with.

A scanning unit that scans the subject using X-rays and collects projection data based on the X-rays.
A monitoring unit that monitors the body movement of the subject in parallel with the scan and acquires body movement information corresponding to the projection data.
A reconstruction processing unit that applies weights according to the body movement information to the projection data, performs reconstruction processing, and generates reconstruction image data.
A medical image processing device equipped with.

The scanning unit performs a scan using X-rays on the subject, collects projection data based on the X-rays, and collects the projection data.
The monitoring unit monitors the body movement of the subject in parallel with the scan, acquires the body movement information corresponding to the projection data, and obtains the body movement information.
The reconstruction processing unit applies weights according to the body movement information to the projection data to perform reconstruction processing, and generates reconstruction image data.
Medical image processing method.

The scanned data obtained by performing a scan on the subject and the body movement information acquired by monitoring the body movement of the subject acquired in parallel with the scan, which was scanned. The acquisition unit that acquires the body movement information corresponding to the data,
A reconstruction processing unit that applies weights according to the body movement information to the scanned data, performs reconstruction processing, and generates reconstruction image data.
A medical image processing device equipped with.

The body movement information includes information indicating the presence or absence of the body movement or the degree of the body movement.
The reconstruction processing unit has a degree to which the first projection data collected when the body movement is absent or the body movement is greater than the body movement in the first projection data. The medical image processing apparatus according to claim 15, wherein a weight smaller than the weight for the second projection data collected when is small is applied.

The medical image processing apparatus according to claim 15, wherein the body movement information acquired at the timing of scanning is added to the scanned data and stored.

The body movement information acquired for the scanned data is stored independently of the scanned data and in association with the scanned data.
The medical image processing apparatus according to claim 15, wherein the reconstruction processing unit performs reconstruction by adding weights based on the body movement information at the timing of image reconstruction.

When the acquired body movement information is information acquired in a predetermined region of the subject, the reconstruction processing unit weights the scanned data with respect to the data belonging to the predetermined region. The medical image processing apparatus according to any one of claims 15 to 17, wherein the medical image processing apparatus is applied to perform a reconstruction process.

A display unit that displays a reconstructed image based on the reconstructed image data reconstructed by the reconstructed processing unit, and a display unit.
An input unit in which the user confirms the reconstructed image displayed on the display unit and changes parameters related to the weight, and
The medical image processing apparatus according to any one of claims 15 to 18, further comprising.