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|English to Swedish translations [PRO]|
|English term or phrase: Landmark Tests|
|Perform Landmark Tests several times during application to ensure that the Spine Tracker's position has not changed during surgery.|
Bara en gissning... Sven dyker förhoppningsvis upp med ett bra svar, han som är kunnig inom många medicinska saker!
Den här informationen hittade jag i alla fall:
"Image guided surgery relies on the precise registration of the anatomy with a set of preoperative images. In cranial surgery, rigid fixation of the skull is possible so post-registration movement between the head and position sensor is negligible. In spine applications, fixation is impractical, so motion that occurs between the time of registration and completion of the therapy must be tracked. This is normally done by affixing a "spine tracker" to the vertebral body of interest. The tracker is responsible for monitoring the motion of the vertebral segment that may occur from breathing or induced by the surgical procedure.
Spine trackers have typically been small plates containing light emitting diodes (LEDs) whose position can be determined by an optical tracking system. These "Dynamic Reference Bases" are attached by a clamp or pin to the spine. Spine trackers can be devised for any position sensor system, including electromagnetic and mechanical sensors. In the latter, a mechanical arm position sensor could be attached directly to a vertebral segment to compensate for spine motion
The accuracy to which a spine tracker must track the vertebral segment is not currently known due to the lack of information about the amount of motion occurring surgery. The aim of this study was to measure the size and character of this motion during surgery in a stable and destabilised spine. This information can also be used to decide if an adjacent vertebral body can be tracked during screw placement. It is desirable to displace the tracker from the primary operative site, where it can get in the way of the surgery."
Det låter ju som något test man gör för att kolla att den här Spinal Trackern är på plats, så att den inte flyttar sig. Det borde ju finnas några sorts markeringar för vart den skall sitta på kotan eller vart de nu sätter den.
Lycka till, och hoppas att det hjälper något i alla fall....
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