CT Scan

Supporting your care team with diagnostic imaging

CT Scans at Winchester Hospital

Computed tomography (CT) scans are a common procedure. It uses X-rays and computer technology to create detailed images of the body. It can create clearer images of the body than a traditional X-Ray.

Your doctor may request a CT scan to help diagnose a condition or monitor a treatment to see if it’s working. Our expert radiologists interpret the images produced by a CT scan. We can help diagnose health problems that include:

CT Scans with Iodine Contrast Dyes

Some CT scans involve the use of contrast dyes. These dyes help create clearer CT images of certain areas of the body. You’ll either be asked to drink the dye before your scan, or it may be given as an injection.

Your doctor will let you know of any special instructions you need to follow before a CT scan with contrast dye.


Positron emission tomography-computed tomography (PET/CT) is a special type of CT scan. They provide your doctor with information about the body’s chemistry, cellular function and exact location of certain diseases.

The images created with a PET/CT are not available with other technologies, such as CT, MRI, PET or X-ray alone.

Scheduling a CT Scan

Your doctor must provide a written or electronic order before you can receive a CT scan. You also may need to talk to your insurance provider to make sure your scan is a covered service under your insurance plan.

You can schedule a CT scan by calling 781-756-2211.

Preparing for a CT Scan

Before Your CT Scan
  • Take your usual medications the day of the exam.
  • Don’t eat solid foods for at least three hours before the exam. You can drink clear liquids.
  • Wear clothing that is comfortable and free of metal. Metal, such as zippers or pins, can interfere with the CT scan.
During Your CT Scan

During your CT scan, you lie down on an X-ray table. The CT scanner is a large, doughnut-shaped machine that is open on both ends. The table moves in and out of the scanner while capturing images of your body.

You need to lie very still during the scan. The testing team may ask you to follow specific instructions, such as holding your breath for several seconds.

After Your CT Scan

You can resume normal activities after your exam is complete. Drink extra fluids during the day. If you have any concerns or unusual pain after the test, call your doctor’s office.

A radiologist reviews your imaging scans. They discuss the results with your doctor, who then discusses them with you.

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Conditions We Treat

Your doctor may recommend a CT to help diagnose a health condition or to determine how well a treatment is working. Doctors often use CT scans for these health conditions:
  • Blood clots
  • Bone fractures
  • Heart disease
  • Infections
  • Internal bleeding
  • Internal injuries
  • Lung nodules
  • Muscle or bone disorders
  • Tumors

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Services & Specialities

Providers from specialty areas across our hospital may order an ultrasound as part of your diagnosis or treatment plan. We collaborate with these providers to get you on your way to improved health.