CT

Computed tomography (CT) combines the use of X-rays with the latest computer technology. Using a series of X-ray beams, the CT scanner creates cross-sectional images. A computer then reconstructs the “slices” to produce the actual pictures. Considering that some slices are as thin as half a millimeter, a CT scan offers much more image detail than a traditional X-ray, which means your doctor gets the best information to make the most accurate diagnosis.

Your doctor may recommend this type of diagnostic imaging procedure when there is a need to evaluate soft tissue, such as internal organs. Because CT scans are able to capture information in a cross-sectional format, your doctor is better able to view the size, shape, and position of soft tissue structures than if using regular X-rays.  CT scans help identify tumors and cysts, as well as other diseases of the liver, lungs, coronary arteries and other internal organs.

  • Scanning takes only seconds, though total exam times will vary. You may ask your doctor or our staff for exam duration specifics.
  • For most CT exams, you will be asked to wear a gown to prevent your clothing from obstructing the X-rays
  • When the exam begins, the table will move to a starting position, pause and then move to the final scanning position.
  • On the table, a donut-shaped “gantry” will surround you. This houses the X-ray tube that generates the invisible X-ray beams.
  • The gantry produces little noise. You may only hear mechanical humming, which is the sound of the X-ray tube rotating inside the gantry.
  • During scanning, you’ll be required to lie very still and hold your breath as instructed by the technician performing your exam.

Some exams require oral contrast media, or dyes, to help enhance the visualization of certain tissues. If dye is needed, it is administered by injection into a vein. You may feel a slight sensation during this injection. Although contrast is not harmful, it is commonly iodine-based, which can trigger an allergic reaction in some patients. Those persons who are allergic to iodine should notify their doctor and our staff prior to any CT scan. Other risks include receiving “ionizing” radiation, which occurs during all CT and X-ray exams. Ionizing radiation is especially harmful to an unborn child, and pregnant women should not receive a CT imaging study. MRI scans do not produce radiation, and your physician may require an MRI exam if you are pregnant.