Computed Tomography (CT Scan)
Computed Tomography (CT) allows us to acquire and reconstruct thin, cross-sectional images (also called slices) of a body part, eliminating the superimposition of structures that occur in conventional radiography. CT is also much more sensitive to differences in tissue density when compared to radiology. CT is usually the imaging modality of choice for evaluating bony lesions but can also be used to evaluate soft tissue structures.
The basic technology behind CT involves an x-ray tube that turns around the patient within a gantry.
Recent developments in CT have brought a technology called multidetector scanning. This allows the acquisition of 2, 4, 8, 16 or more slices simultaneously depending on how many rows of detectors the scanner has. It offers the capability of creating thinner or thicker sections (slices) from the same raw data and consequently 3D reconstruction with minimal artifacts.
Since acquiring a multidetector CT scanner, we have been able to provide high-resolution images much faster than previously, which reduces the time patients must spend under general anesthesia.
We commonly perform CT scans of the following:
- Nasal cavity