Effects of two different registration methods on the accuracy of Robot of Stereotactic Assistant system
Abstract：Objective To investigate the effects of two different registration methods on the accuracy of Robot of Stereotactic Assistant (ROSA) system via experiments simulated by the skull model. Methods Using the skull model, bony landmark group (bony landmark registration) and laser group (laser registration) were applied to simulate implantation of electrode by 20 times. The deviation range of the distance was observed between microelectrode recording needle tips and designed targets. Results In bony lanfmark group, the average distance error of 20-time experiments was 0.41 mm (maximum 0.51 mm, minimum 0.30 mm), and the average time was 3 minutes 15 seconds, with the whole microelectrode recording needle tips arrived to the scope of 1 mm diameter hollow screw inner ring. But in laser group, the average time was 17 minutes 22 seconds, with 7 records of needle tips pointed to 1 mm diameter hollow screw inner ring, while the other 13 times only meeting the standard of 1.6 mm diameter hollow screw inner ring. Conclusions ROSA system has a high precision, and bony landmark registration method is more accurate than the laser registration method.
Keywords：Robot of Stereotactic Assistantdeep brain stimulationbone markerlaser surface recognitionregistration
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 80-82 )