Computed Tomography (CT)
Computed Tomography (CT) Defined

CT or Computed Axial Tomography, formerly known as a CAT scan, combines x-ray technology with advanced computer acquisition to uncover the nature of pathology. The major benefit of CT is its ability to show internal anatomy in cross-sections commonly referred to as slices. The most common analogy used to describe the cross-sectional view is that of a slice out of a loaf of bread. In CT scanning the slices are very, very thin millimeter sections capable of revealing tiny abnormalities.

CT Scanning at EPIC

CT plays a pivotal role in diagnosing a wide variety of abnormalities. EPIC Imaging features the most advanced CT technology available, the Aquilion Spiral (or helical) CT from Toshiba. The breakthrough technology offered by this scanner is capable of performing 1/2 second scans cutting the scanning time in half from many other machines.

Our CT patients enjoy a much more comfortable exam experience. Most scans are completed in a single breath hold. Accuracy is greatly improved and the most common problem of motion during the scan is significantly lessened.

The Aquilion also provides new capabilities for patients. Using a special add-on, a quick CT scan can provide a reliable, non-invasive measurement of calcium build-up in the coronary arteries. The resulting measurement or score is an excellent screening tool to indicate increased risk of heart attack.

We also use the Aquilion for the early detection of lung cancer. Lung cancer is the leading cause of death in the US. Survival rates have been dismal because 85% of tumors are discovered at a late stage when treatment can do little to cure them. Recent research has shown CT lung cancer screening can change that. The life saving technique has effectively diagnosed many Stage I lung cancers.

How Spiral CT Scanning Works

CT yields minutely thin, cross-sectional views of anatomical structure. These views are commonly referred to as slices and enable the radiologist to zero-in on problem areas, seeing detail unavailable with other technology.

The Spiral CT scanner has a rotating tube which captures information in a steady, continuous circular (or spiral) motion as it rotates around the patient while he is simultaneously moving into the machine. X-ray beams pass through the body from many different angles and sophisticated sensors measure the amount of radiation absorbed by the different tissues of the body. State-of-the-art software then uses the difference in the x-ray absorption of the tissues to form cross-sectional images or slices called tomograms. The sophisticated computer allows us to conduct accurate measurements and magnify and enhance images.

How We Use It

CT is particularly effective on bony structures, the abdomen and chest. It is regularly used for:

  Cancer diagnosis
  Head Trauma
  Lung Cancer Screening
  Organ or Tumor Measurement
  Abdominal Pain
  Sinus Problems
  Stroke diagnosis
  Aneurysm
  Kidney Stones
  Coronary Artery Calcium Scoring
  As a Guide for Needle Biopsies

For more information on how to prepare for a CT exam click here.