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Gamma Knife Radiosurgery Technique

Patient medical history review

CT scan

MRI scan

Combine CT and MRI images

Mark the treatment area on images

Calculate the necessary radiation dose

Design the treatment plan

Approval: Radiation Oncologist

Patient positioning in the headset

Double-check patient's position with the use of X-rays

Execute the treatment plan

Monitor the patient during treatment

Patient examination post treatment

Schedule follow-up consultation

Patient medical history review

Review the patient's medical history to understand their previous conditions, treatments, and any potential contraindications. This information helps in assessing the suitability of Gamma Knife radiosurgery and ensuring the overall safety of the procedure. It also allows the medical team to design a personalized treatment plan for the patient. Have the patient's medical records ready for reference.

Upload patient's medical records

CT scan

Perform a CT scan to obtain detailed cross-sectional images of the patient's head. This scan provides important anatomical information necessary for precise treatment planning. Inform the patient about the procedure and help them prepare for it.

CT scan technician

MRI scan

Conduct an MRI scan to gather additional imaging data of the patient's brain. MRI provides detailed information about the soft tissues and helps in identifying the exact location of the target area. Coordinate with the MRI team to ensure a smooth process for the patient.

MRI technician

Combine CT and MRI images

Merge the CT and MRI images using specialized software to create a comprehensive dataset. The combined images offer a more accurate representation of the treatment area and aid in precise treatment planning. Make sure the image fusion process is carried out accurately and verify the quality of the merged images.

Image fusion specialist

Mark the treatment area on images

Identify and mark the exact area in the combined images that requires treatment. This step ensures that the radiation is focused on the targeted region while minimizing the exposure to surrounding healthy tissues. Use suitable tools or software to mark the treatment area accurately.

Treatment area marking method

1

Manual marking
2

Semi-automated marking
3

Automated marking

Calculate the necessary radiation dose

Calculate the appropriate radiation dose based on the treatment area and the required level of precision. Consider factors such as tumor size, location, and surrounding critical structures. The calculated dosage determines the effectiveness and safety of the treatment. Utilize specialized software or tools to perform the dose calculation accurately.

Tumor size (in mm)

Critical structure proximity