Search the Health Library
Get the facts on diseases, conditions, tests and procedures.
I Want To...
I Want To...
Find Research Faculty
Enter the last name, specialty or keyword for your search below.
School of Medicine
I Want to...
How It Works
A CT (computerized tomography) scan is a type of X-ray that rotates around the body and produces cross section images of body areas so that internal body structures can be seen. CT scans can show bones and organs as well as detailed anatomy of glands, blood vessels and more.
Typically, patients undergo CT scanning shortly before surgery to confirm the location of a tumor or other problem and to map the positions of their vital organs. This data is saved and then compared to new images during surgery. Intraoperative CT scanner in the OR
The dual-room iCT is mounted on rails so it slides into position for use during surgical procedures, and it adjusts for various patient positions. After the new CT images are obtained, then the iCT slides back to its original position between the two operating rooms. The iCT scans are instantly integrated with the pre-operative scans and other data.
Having access to all of this information at once allows surgeons to better make critical decisions during delicate surgeries. These real-time images help to verify the success of the operation immediately after surgery, while still in the operating room.
For neurological surgeries, the iCT is used in conjunction with tools and software that serve as a surgical navigation system. Similar to a GPS device, it allows surgeons to know precisely where they are operating or how much tissue has been removed.
Request an Appointment
Already a Patient?
Traveling for Care?
Whether you're crossing the country or the globe, we make it easy to access world-class care at Johns Hopkins.