Beräknad lästid: 4-6 Minuter
Augmented Reality and intraoperative imaging enables us to place spinal implants much safer and more accurate
Dr. Adrian Elmi Terander
Neurosurgeon at Karolinska University Hospital
Surgical navigation systems are not new – they have been used for the past 20-30 years. Traditionally in spine surgery, X-rays of a patient are taken before the operation. These scans are then used to plan and guide the operation. With the new navigation technology, the care team gets real-time imaging and real-time navigation support during the operation, both in one system. A flat detector with four integrated hi-resolution cameras captures external images of the patient on the operating table. These images are automatically combined with internal images of the bony anatomy captured by an X-ray system, generating 3D views with augmented reality to help guide the surgical procedure.
“This allows us to plan our procedures virtually,” Dr. Elmi Terander says. “We can now insert implants with high precision to improve patient safety.”
Indicating some of the benefits of the technology, the first in human clinical study using AR for spine surgery, published in the journal Spine [1] has shown that the technology enables a high (94.1%) overall screw placement accuracy whilst virtually eliminating radiation exposure to the surgeon and OR staff.
With this new technology, we can do a 3D check in the operating room, to see if all the implants have been inserted correctly. If we need to make adjustments, we can do this straight away, saving the patient a second operation.
Dr. Adrian Elmi Terander
Neurosurgeon at Karolinska University Hospital
While working on this innovation project, Dr. Elmi Terander has seen specialists from different disciplines within Karolinska come together. “Over the last years, we have had a very fruitful collaboration with our colleagues in neuroradiology, anesthesia and orthopedics, performing surgery together,” he says.
“Neurosurgeons and orthopedic surgeons bring different strengths to the operating room: neurosurgeons excel in high-precision work, whereas orthopedics are highly visual 3D thinkers. With this new surgical navigation technology, we can combine these strengths to achieve better outcomes for patients. I think this project is a prime example of what Karolinska is trying to achieve with its new operating model: breaking internal boundaries to deliver the best possible care.”
As a next step, Karolinska will be working closely with Philips to further develop the new augmented reality technology. Dr. Elmi Terander and his team will also start looking at other possible applications. “So far, we have focused on spinal surgery. But when you’re operating on a brain tumor, for example, you also need to know exactly where you are with your instruments. It’s still early days, but I envision a future in which this kind of technology will be used in all parts of the body that require high-precision navigation.”
[1] Pedicle screw placement using augmented reality surgical navigation with intraoperative 3D imaging: a first in-human prospective cohort study (SPINE, An International Journal for the study of the spine, September 2018)
Learn more about the innovation partnership between Karolinska University Hospital and Philips here, and see more published studies from the partnership here.
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