5 results about "Perfusion scanning" patented technology

The invention relates to a three-dimensional image construction method and device based on perfusion scanning, computer equipment and a computer readable storage medium. The method comprises the following steps: acquiring scanning data after a scanning object is subjected to multi-circle scanning in a contrast agent perfusion process; according to the scanning data after the multi-circle scanning, obtaining reconstruction data of a plurality of target moments through interpolation operation and reconstruction processing; according to the reconstruction data of the multiple target moments and the mask data of the scanning object, perfusion peak data of the scanning object is obtained; and constructing a three-dimensional image of the scanned object according to the perfusion peak data. By adopting the method, the image quality of the three-dimensional image can be improved.

The application relates to the medical imaging technical field and discloses a motion detection method and device for a perfusion scanning process and a CT scanning device, wherein the motion detection method comprises the following steps: acquiring an image of a current scanning circle; performing skull region segmentation on the image of the current scanning circle to obtain a skull mask image of the current scanning circle; comparing the skull mask image of the current scanning circle with a target skull mask image to determine an overlapping degree index; and determining the motion condition of the patient's head according to the overlapping degree index. The image reconstructed by the current scanning circle is acquired in real time during the scanning process, the image of the current scanning circle is subjected to skull region segmentation to obtain a skull mask image, and the overlapping degree index of the skull mask image of the current scanning circle and the target skull mask image is determined, so that the motion condition of the patient's head can be quantitatively evaluated, and the motion detection accuracy is improved.

The invention discloses a CT scanning method which is applied to the technical field of CT scanning. The method comprises the following steps: acquiring a single-energy voltage, a high-low-energy voltage, an energy spectrum scanning time phase and a perfusion scanning time phase which are used for indicating to perform energy spectrum perfusion combined scanning on a to-be-detected part, wherein a scanning instruction carries the energy spectrum perfusion combined scanning; the energy spectrum scanning time phases are one or more scanning time phases in the perfusion scanning time phases; in response to the scanning instruction, according to a perfusion scanning mode, transmitting a single-energy ray based on a single-energy voltage in other time phases except the energy spectrum scanning time phase in the perfusion scanning time phase of the to-be-detected part and transmitting a dual-energy ray based on a high-low-energy voltage in the energy spectrum scanning time phase, obtaining single-energy scanning data and / or dual-energy scanning data of the region of interest of the to-be-detected part; and obtaining a perfusion image and / or an energy spectrum image of the region of interest by using the single-energy scanning data and / or the dual-energy scanning data. And mutual fusion of the energy spectrum and the perfusion in the scanning process can be realized.

The invention relates to a one-stop liver photon counting CT imaging system and method.The system comprises a positioning image scanning module, a perfusion scanning module and a delay scanning module, the positioning image scanning module is used for conducting positioning image scanning operation on a patient user, and an abdomen normal position positioning image used for assisting in determining the follow-up perfusion scanning range is obtained; the perfusion scanning module is used for performing multi-energy perfusion scanning operation on the patient user to obtain a perfusion image; and the delay scanning module is used for performing multi-energy delay scanning operation on the patient user to obtain a multi-energy color CT image. Compared with the prior art, one-stop multi-energy CT scanning of the liver is carried out through PCD-CT, low-dose energy CT perfusion imaging and delay period multi-energy color CT images can be obtained, and richer and more accurate data information can be provided for clinic.

Methods, devices, and systems for CT scanning are provided. The methods include obtaining a scanning instruction for a target object. The scanning instruction is configured to instruct to perform a combination of spectrum CT and CT perfusion scanning on the target object. The scanning instruction includes scanning time information of the combination of spectrum CT and CT perfusion scanning. The scanning time information includes a spectrum scanning phase and a perfusion scanning phase, and the spectrum scanning phase is one or more scanning phases of the perfusion scanning phase. The methods further include in response to the scanning instruction, performing a CT perfusion scanning on the target object in the perfusion scanning phase other than the spectrum scanning phase, and performing a spectrum CT scanning on the target object in the spectrum scanning phase.