Digital stereotaxic instrument is a precision instrument used for brain surgery and neuroscience research, widely used in fields such as deep brain stimulation (DBS), brain function localization, brain tumor localization, and neurophysiological recording. It determines the target position of the brain through high-precision three-dimensional coordinate positioning, assisting doctors in accurate surgical operations or research.
The positioning and usage method of digital brain stereotaxic device
Equipment preparation
Calibration instrument: Before use, ensure that the digital brain stereotaxic device has been calibrated according to the manufacturer's requirements to ensure positioning accuracy.
Patient positioning: Fix the patient on the operating table and use a head fixator to secure the patient's head in the frame of the locator. Ensure the patient's head remains stable and avoid positional deviation during the surgery.
Head imaging examination: Preoperative CT or MRI scans are usually performed to determine the target location and obtain three-dimensional images of the patient's brain (such as EEG localization, tumor or lesion area localization, etc.).
Reference framework installation
Fixed reference frame: The reference frame is an important component of the digital brain stereotaxic device, which needs to be tightly fixed to the patient's head, usually determined by some special fixators and markers to determine the reference coordinate system. There are multiple calibration points on the framework for subsequent coordinate matching.
Align reference coordinates: After the reference frame is installed, it is docked with the patient's head through the instrument's positioning system to ensure alignment between the reference frame and the patient's head coordinate system.
Determination of three-dimensional coordinates
Image data import: Import the patient's CT or MRI scan images into the brain stereotaxic system. The system compares these image data with the marked points on the reference frame.
Positioning system software processing: The software will automatically process image data and calculate the target position based on the coordinate system of the brain structure and reference frame. Through the software interface, doctors can see the precise position of the target area in the three-dimensional coordinate system.
Target point selection: The doctor selects the target point on the positioning system based on the imaging image and the preset target position. For example, in deep brain stimulation surgery, it is necessary to locate the lesion area or treatment point, and in neuroscience experiments, precise recording of electrical activity in brain regions is required.
precise positioning
Digital display: The digital brain stereotaxic device has digital display function, which can display the three-dimensional coordinates of the target point in real time (such as X, Y, Z coordinates). The doctor aligns the surgical instruments with the target area based on the displayed coordinate information.
Adjustment and confirmation: During the surgical process, doctors can adjust the positioning device in real time to ensure accurate positioning of the target position. The digital information displayed on the device helps doctors accurately locate and ensure the precision of the surgery during actual operation.
Positioning accuracy verification
Accuracy verification: During the positioning process, the positioning accuracy can be confirmed by checking the coordinate consistency of multiple target points. The error of positioning points in different regions should be within an acceptable range, usually requiring accuracy at the millimeter level.
System feedback: The digital brain stereotaxic device provides feedback signals based on the small displacement and positioning error of the head during positioning. If there is a deviation, the system will automatically correct it and issue a warning to remind the operator to adjust.
Surgical procedure
Entering the target area: Once the target position is determined, the doctor can start the surgical operation based on the digital coordinate information of the locator. For example, during deep brain stimulation (DBS) surgery, doctors can use a positioning device to guide the insertion position of electrodes.
Real time monitoring: During the surgical process, doctors can use a digital brain stereotaxic device to monitor the precise position of electrodes or other surgical tools, and make fine adjustments to the target position.
Postoperative verification
Postoperative imaging comparison: After the surgery is completed, patients usually undergo postoperative CT or MRI scans to verify the match between the surgical results and the predetermined target location.
Positioning data recording: The digital brain stereotaxic device will save all data during the positioning process, including target point coordinates, error analysis, and other information, as an important basis for postoperative evaluation.
The advantages of digital brain stereotaxic device
High precision: The digital brain stereotaxic device can provide millimeter level positioning accuracy, which is crucial for neurosurgery and neuroscience research.
Real time positioning: This instrument can display the coordinates of the target point in real time and help doctors accurately locate the target area through a digital interface.
Visual operation: The digital display screen and software system can enable doctors to clearly see the brain structure and the location of target points, reducing surgical risks.
Safety: Due to the high precision and real-time feedback function of the digital brain stereotaxic device, it helps to avoid misoperation and positioning deviation, thereby improving the safety of surgery.
Precautions
Patient's head fixation: During positioning, ensure that the patient's head remains stationary to avoid positional deviation affecting positioning accuracy.
Image data quality: High quality CT/MRI images are crucial for positioning accuracy, and the clarity and resolution of image data directly affect the positioning results.
Equipment calibration: Regularly calibrate positioning instruments to ensure their long-term stability and accuracy.
summary
The digital brain stereotaxic device provides precise three-dimensional spatial positioning in neurosurgery and neuroscience research, helping doctors accurately locate target areas in complex brain surgeries. By combining high-quality imaging data and precise digital positioning technology, the digital brain stereotaxic device improves the safety and effectiveness of surgery, and has significant advantages such as real-time performance and high precision.