6 results about "Gold marker" patented technology

The invention discloses a gold label implant and positioning feature processing equipment thereof, and relates to the field of implantable medical instruments, a gold label is a cylinder, and the side wall of the gold label is provided with positioning features; positioning feature machining equipment comprises an electric spark machining device and a control piece. The control piece comprises a rotating assembly and a power connection assembly; the rotating assembly comprises a mounting frame, a motor arranged on the mounting frame, a first bevel gear connected with the motor, a second bevel gear meshed with the first bevel gear, a chuck piece fixed to the second bevel gear and a clamping piece arranged on the chuck piece. Positioning features are marked on the surface of the metal marker, friction force can be effectively increased, the implant is made of inert alloy materials and is easy to recognize and track, and conventional medical examination is not affected; the positioning feature machining equipment adopts electric spark machining, effectively fixes a gold-labeled raw material alloy thin wire, meanwhile, the gold-labeled raw material alloy thin wire is connected into an electrode, the rotating angle of the alloy wire can be controlled through a motor during machining, and positioning features are gradually punched on the side wall.

The invention discloses a real-time positioning method for a tumor target region and a gold label implant, and belongs to the technical field of tumor localization, and the method specifically comprises the following steps: implanting a gold label in a tumor region, constructing a gold label-tumor dynamic model through CT, and obtaining a respiratory phase feature vector; realizing space matching of the two-dimensional projection and the three-dimensional model by using an improved hybrid registration algorithm, and obtaining a tumor compound displacement vector; establishing a respiration-displacement correlation model through time sequence alignment, generating a tumor movement map containing a real-time position and a predicted trajectory, and updating the reference coordinate system; establishing a rigid safety boundary based on a gold label, analyzing soft tissue texture and a prediction trajectory in combination with a convolutional neural network to generate an elastic treatment boundary, and dynamically adjusting a dose weight of a non-label area; and finally, submillimeter-level dynamic tracking is executed through a multi-leaf collimator. The problems of tumor motion uncertainty and individual deformation difference are solved, and the target area coverage precision and the dose distribution reasonability are improved.

This application provides a method and system for recommending gold marker implantation sites, relating to the field of image-guided radiotherapy technology. The method includes acquiring a patient's CT image data; determining several gold marker implantation points based on the CT image data; combining the gold marker implantation points according to preset aggregation rules to construct several gold marker point sets; evaluating the three-dimensional geometric stability index and the two-dimensional observable stability index of each gold marker point set; combining the preset evaluation rules and the geometric stability index and observable stability index corresponding to each gold marker point set to select the optimal gold marker point set from all gold marker point sets; using the gold marker implantation points in the optimal gold marker point set as recommended gold marker implantation sites; and proactively recommending the optimal implantation point by quantitatively evaluating the geometric stability and observable stability of the gold marker based on CT images before implantation, thereby preventing distribution degradation problems, avoiding rework after implantation, and ensuring tracking accuracy and treatment efficiency from the source.

This application provides a method and system for planning the implantation location of gold markers based on dual-channel X-ray imaging geometry, relating to the field of image-guided radiotherapy technology. The method includes acquiring a patient's CT image data; determining several gold marker implantation points based on the CT image data; combining the gold marker implantation points according to a preset aggregation rule to construct several gold marker point sets; evaluating the resolvability of the gold marker point set based on the projection distance between any two gold marker implantation points in the two-channel DR imaging; and evaluating the non-overlapping nature of the gold marker point set based on the projection position of each gold marker implantation point in the two-channel DR imaging. This invention uses CyberKnife dual-channel projection geometry to quantitatively evaluate resolvability and non-overlapping, enabling preoperative planning of optimal implantation schemes, avoiding tracking failures caused by two-dimensional projection issues, and significantly improving treatment safety and efficiency.

The application discloses a real-time positioning method of a tumor target area and a gold mark implant, and belongs to the technical field of tumor positioning, and specifically comprises the following steps: implanting a gold mark in a tumor area, constructing a gold mark-tumor dynamic model through CT and acquiring a respiratory phase feature vector; a two-dimensional projection is matched with a three-dimensional model in space by using an improved hybrid registration algorithm, and a tumor composite displacement vector is acquired; a respiratory-displacement correlation model is established through time sequence alignment, a tumor motion atlas containing a real-time position and a predicted trajectory is generated, and a reference coordinate system is updated; a rigid safety boundary is established based on the gold mark, an elastic treatment boundary is generated by combining convolutional neural network analysis of soft tissue texture and the predicted trajectory, and a non-marked area dose weight is dynamically adjusted; and finally, sub-millimeter dynamic tracking is executed through a multi-leaf collimator; the problems of tumor motion uncertainty and individual deformation difference are solved, and the target area coverage precision and dose distribution rationality are improved.

1. The name of the design product: positioning marker (radiotherapy). 2. The use of the design product: a metal marker for matching gold marker implanters for implanting into the human body, used for clinical routine treatment, physiotherapy and tumor radiotherapy and chemotherapy, and used for matching medical instruments and equipment to track and position specific lesion tissues. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The reference diagram in use is the state of the product implanted into the lesion site by the gold marker implanter.