Single-Photon Emission Computed Tomography (SPECT) - Gwinnett Medical Center Imaging

What Are SPECT/CT Scans?

SPECT, or single-photon emission computed tomography, is a particularly effective nuclear imaging technique that provides images of structures deep within the body. At Gwinnett Medical Center, we combine SPECT and advanced multi-slice CT, or computed tomography, images from one non-invasive patient scan for an advanced level of diagnostic confidence and efficiency. This advanced diagnostic imaging helps us develop individualized treatment plans for patients.

Why Are CT Scans and SPECT Scans Used Together?

Incorporating CT scan data with SPECT images allows physicians to better view the location of, and changes in, tissue. This improved vantage point helps doctors make more informed decisions about treatment options, as well as monitor the responsiveness to those treatments.

Some of the diseases and disorders SPECT images/CT scans have helped detect include:

Brain Disorders

• Dementia
  
• A clogged blood vessel
  
• Seizures
  
• Encephalitis
  
• A head injury

Heart Problems

• Clogged arteries
  
• Reduced pumping efficiency

Bone Disorders

Areas where bone is healing or where cancer is progressing usually show up on SPECT scans. Often, SPECT scans can also be used to diagnose hidden bone injuries.

SPECT/CT services offered at Gwinnett Medical Center Imaging:

• Bone scans
  
• Gastrointestinal bleeding
  
• Parathyroid exams
  
• Tumor imaging
  
• Renal disease

Preparing for Your SPECT/CT Exam

Here are some important things to remember when preparing for your exam:

• No food or drink for four to six hours before your exam
  
• Notify your physician if you are pregnant, breastfeeding or diabetic
  
• Do not take any prescribed medication, unless instructed otherwise
  
• Wear comfortable clothing

What to Expect During Your Exam

The majority of SPECT/CT exam require only a small injection into the vein. The injection is painless and contains a radioactive glucose material. You may be asked to continue lying quietly and still for a couple of minutes until the material distributes itself throughout your body.

If you have a thyroid exam, you will receive a pill rather than an injection. If you have a heart examination, you will undergo a stress test. This is a routine treadmill exercise.

The procedure takes anywhere from 30 minutes to four hours depending on the scan ordered. During the exam, you will be asked to lie down on a padded examination table and breath normally while the SPECT/CT scan machines evaluate the affected area. After the exam, you can return to your normal daily routine.

Gwinnett Medical Center Imaging has three convenient Atlanta-area locations, in Lawrenceville, Hamilton Mill and Duluth. If you would like to schedule an appointment, please call 678-312-3444.

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