The Circle of Willis encircles the stalk of the pituitary gland and provides important communications between the blood supply of the forebrain and hindbrain and connects two arterial sources together to form the arterial circle, which is responsible for supplying the brain with blood. These can be seen with the help of CT scan which are special X-ray Test that produce cross-sectional images of the body using X-rays and a computer. The higher resolution has assist the doctor in making a diagnosis.
You will be required to change to a hospital gown and hence would be advised to wear loose clothing. You would be restrained from wearing metal objects. Doctor should be informed in case of any allergic reaction to iodine contrast.
This scan helps in defining normal and abnormal structures in the parts of the brain They help in identifying the placement of instruments or treatments in procedures The technique is painless and can provide extremely accurate images of body structures These procedures are minimally invasive and reduces the need to perform surgery to accomplish the same goal
You will be asked to lie on a moveable table. Since the head is being imaged, the technologist may position the head in a special head-holder which keeps it from moving. After you are placed in a comfortable position, the table will be taken moved to the CT machine that looks like a large square doughnut with a hole in the middle. Occasionally, contrast material (an X-ray dye) is placed into the spinal fluid to further enhance the scan and the various structural relationships of the spine, the spinal cord, and its nerves. Contrast material is also often administered intravenously or through other routes prior to obtaining a CT scan. The technologist will be on constant contact with you over an intercom. You will be asked to hold your breath and be perfectly still for a few seconds when each of the picture is taken. The machine may be quiet or noisy, depending on the brand. The noise is produced by x-ray tube rotating around your body to produce the images. You will not feel any sensation from the scan. The scan can last from 5 to 15 minutes. After the test, the IV will be removed and you are free to go.