Сравнение гамма ножа и кибер ножа

Competition to treat benign and malignant brain tumors vascular malformations, and functional conditions with stereotactic radiosurgery (SRS) has increased dramatically in recent years. All-in-one systems like the CyberKnife® are aggressively positioning themselves as being comparable to the Gamma Knife in effectiveness and efficiency.

Gamma Knife is the gold standard for stereotactic radiosurgery treatment of brain disorders. Its clinical effectiveness has been documented over four decades, with more than 500,000 cases treated worldwide providing the data for 3,000+ publications in peer-reviewed medical literature. It is used as the performance metric against which other technologies (such as the CyberKnife) are measured.

Consider these fundamental differences between Gamma Knife and CyberKnife:

Gamma Knife	CyberKnife

Designed exclusively for non-invasive brain surgery with a 201 source cobalt unit	Uses a single-source linear accelerator; not exclusive to brain surgery
Radiological accuracy better than 0.3mm	1 mm accuracy; dose outside the target area is 2 to 6 times greater than with the Gamma Knife
Rigid immobilization to prevent head movement using a lightweight stereotactic head frame fixed to the outer skull. Provides exact MR and CT correlation from planning to treatment delivery in 3D.	Non-rigid immobilization reduces head movement by using a thermoplastic face mask that is shrink-wrapped to the table during treatment. Provides relative MR and CT correlation from planning to treatment delivery in 3D. The CyberKnife is inherently less accurate because the positioning is optically guided, not head-frame based.
Treatment delivered during one session	Single or multiple treatments, possibly over a period of days
Target is confirmed 10 times per second	Target is confirmed once every 10 seconds