Adjust it by fifteen degrees, to form a seventy-five-degree angle with the nerve root. If it's too small, it will slide; if it's too large, the tube can't be placed.
The angle calculated by Yang Ping is not a random estimate, but a precise angle derived from observing Su Nanchen's simulation of the puncture.
The advanced training program of the system has improved Yang Ping's ability to visualize, enhancing the precision of both his brain and hands. This isn't just mechanical measurement, but also involves delicate, nuanced sensations.
A puncture made at a seventy-five-degree angle with a nerve root, which meant adjusting it fifteen degrees from vertical, how could it be so precise? Su Nanchen wondered.
The accuracy of the navigation system could be as precise as a few tenths of a millimeter, but this was theoretical accuracy. The reconstructed 3D image itself would have a certain distortion, and the reference points weren't 100% accurate either.
