Image Guided Surgery

Image-guided surgery is a recent development that you may benefit from, particularly if you have an advanced procedure. Here, the same Global Positioning technology that directs drivers to their destinations and missiles to their targets is used to help surgeons guide their instruments through the sinus cavities with mil-140, limeter accuracy.

Image-guidance systems enable a surgeon to monitor the precise location of his instruments within the sinus cavities throughout surgery. These systems use either an infrared beam or an electromagnetic signal to track the position of the instruments relative to the patient's head. They require the patient to wear a special headset during surgery. (For some image-guidance systems, the same headset is worn by the patient during the preoperative sinus CT scan.) The location of the tip of the instruments is depicted by crosshairs on a three-dimensional video display of the patient's sinus CT scan, as shown in Figures 15.2 and 15.3.

Image-guided surgery's advantage is that it reduces the element of guesswork—the surgeon always knows exactly where he is. For this reason, it's most helpful in difficult cases. During a study of one thousand image-guided sinus surgeries, I surveyed forty-two

With the left hand, the surgeon holds a video camera attached to an endoscope that displays a magnified view of the nasal cavity on the video monitor (right). With the other hand, he passes instruments alongside the endoscope to remove diseased tissue. The image-guidance system uses an infrared camera (horizontal white bar at top) to monitor the location of the tip of the surgical instrument, which is displayed on a second video monitor (center). ,141

With the left hand, the surgeon holds a video camera attached to an endoscope that displays a magnified view of the nasal cavity on the video monitor (right). With the other hand, he passes instruments alongside the endoscope to remove diseased tissue. The image-guidance system uses an infrared camera (horizontal white bar at top) to monitor the location of the tip of the surgical instrument, which is displayed on a second video monitor (center). ,141

I FIGURE 15.3 Video Display During Image-Guided Surgery

I FIGURE 15.3 Video Display During Image-Guided Surgery

The video display of an image-guidance system during sinus surgery shows the location of a surgical instrument depicted by crosshairs on three different views of the patient's CT scan. The lower-right quadrant shows a three-dimensional reconstruction of the patient's sinus anatomy, with the tip of the surgical instrument (depicted as a black pointer) in the ethmoid sinus.

The video display of an image-guidance system during sinus surgery shows the location of a surgical instrument depicted by crosshairs on three different views of the patient's CT scan. The lower-right quadrant shows a three-dimensional reconstruction of the patient's sinus anatomy, with the tip of the surgical instrument (depicted as a black pointer) in the ethmoid sinus.

surgeons who used this new technology at the Massachusetts Eye and Ear Infirmary from 1996 to 2002. They found it to be particularly helpful in cases where the normal surgical landmarks were absent, a common occurrence among patients who have extensive disease or who have undergone previous surgery.

Although image-guidance systems have the potential to enhance surgery's safety and efficacy, they also have drawbacks. Like any fancy new computer, they take time to master, and bugs in the system sometimes arise. Also, these systems add time and expense to the operation, so they are not meant to be used for routine sinus surgery.

Headache Happiness

Headache Happiness

Headache Happiness! Stop Your Headache BEFORE IT STARTS. How To Get Rid Of Your Headache BEFORE It Starts! The pain can be AGONIZING Headaches can stop you from doing all the things you love. Seeing friends, playing with the kids... even trying to watch your favorite television shows. And just think of how unwelcome headaches are while you're trying to work.

Get My Free Ebook


Post a comment