Image-Guided Surgery Systems provide greater accuracy,
a smaller surgical incision, a shorter procedure time,
advanced procedure planning and a shortened patient
stay, creating better patient treatment and care. Such
systems are now used routinely in medical centers throughout
Mr. D'Urso utilises the Medtronic StealthStation Image-Guided
System at Epworth Hospital.
Frequently Asked Questions
What is Image-Guided Surgery?
The entire image-guided surgery process can easily be
correlated or compared to location and directional tracking
systems used for cars and ships today. The image-guided
surgery system camera performs much like the satellite
that detects signals from vehicles that are quipped
with special tracking devices. As the vehicle moves
the satellite calculates position, transfers the information
to the vehicle computer, which in turn shows the direction
the vehicle is moving and when programmed will give
specific directions as to how to proceed.
How does an image-guided surgery
A CT or MR scan is essential to an image-guided surgery
procedure. Special markers or "fiducials"
may be placed on your head prior to a cranial scan.
This scan will be loaded into a computer and your surgeon
can build a three-dimensional (3D) model of your head
or spine to be viewed on a computer monitor. Viewing
the model and scan information, surgeons can plan, in
advance, their surgical path and identify the surrounding
anatomy. At the start of your surgical procedure, the
image-guided surgery system will be moved into the operating
room. Your scan will be displayed on the computer screen
and the surgeon will conduct what is referred to as
a "registration" process. Registration is
simply matching your physical anatomy to the computer
scan information. As the registration process begins,
the surgeon will touch the center of the "fiducials"
or markers that were placed on your head or by touching
specific anatomical points on the spine or cranium with
an image-guided instrument. The camera for the image-guided
surgery system will see the light emitting diodes on
the instrument and on the arc and will transfer a signal
to the computer to "register" the specific
location being touched. By matching the scan to the
real anatomy, the surgeon can now track instrumentation
as it proceeds into the operative field as well as view
its relative position and trajectory.
Are there different types of image-guided surgery
Yes. Several companies manufacture image guided surgery
systems. The systems are differentiated by software
and the applications or procedures they can assist in
Is an image-guided surgery system like a robot?
Will my surgeon still perform the operation?
Image-guided surgery systems are not robotic in design.
The surgeon still holds and guides the instruments.
It is possible that robotics will be integrated with
image-guided surgery systems in the future but all systems
are still directly dependent upon the surgeon, performing
your procedure. The image-guided surgery system provides
a tool that enhances the surgeons ability to perform
Why might I request to have my surgeon use an image-guided
surgery system for my procedure?
Patients may be interested in the use of image-guided
surgery for multiple reasons. Image-guided surgery systems
can increase accuracy levels in both identifying and
removing tumors or lesions and in the placement of implants
for spinal surgery. Image-guided surgery systems can
also enable surgeons to more accurately identify surgical
entry points and targets and reduce the size of incision
or entry point necessary to perform an operation. These
benefits often lead to shorter hospital stays and faster
recovery. In certain cases, tumor biopsies can be performed
with an image guided surgery system with far greater
accuracy and with significantly less trauma to the patient.
Will there be any special requirements of me to
have an image-guided surgery system used in my case?
There are a few special requirements for patients undergoing
a procedure with an image-guided surgery system. In
preparation for surgery, a special MR or CT scan will
be required in order to obtain the images necessary
for the procedure. This scan may require slightly more
time than a typical MR or CT scan. In addition, it is
possible that your surgeon will request that special
"fiducials" or markers be placed on your head
prior to the scan. These markers are very important
because they will ultimately provide the method for
the surgeon to ensure that the image guided surgery
system performs, as it should. "Fiducials"
or markers look like very tiny donuts and are coated
with a special compound to ensure that they will show
up on your scan. These markers will need to remain on
your scalp up until the start of surgery and you may
be required to wear overnight depending upon when your
image-guided surgery scan is performed. If they fall
off during the night, they should be left off so as
not to mislead the surgeon. "Fiducials" or
markers are not utilised in spine surgery.
here to visit the Medtronic Stealth Station Web Site
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