Computed tomography is used to produce what type of images?

Computed tomography is used to produce what type of images?

• A. Evaluates bone mineral density.
• B. Assess joint spaces with contrast.
• C. Measures lung volumes.
• D. Produces cross-sectional images based on X-ray attenuation and is commonly used to diagnose spinal lesions and brain.

Answer: (D)

Computed tomography creates cross-sectional images by measuring how X-rays are attenuated as they pass through tissues. The data are reconstructed into thin slices that can be viewed in axial planes and reformatted into other orientations. This capability makes CT excellent for showing differences in density, especially in bone and soft tissue, and it provides rapid, detailed images of the brain and spine to detect lesions, hemorrhage, or other pathology. Other choices describe techniques not primarily associated with CT: bone mineral density is measured with DEXA, joint spaces with contrast are typically evaluated with arthrography or MRI, and lung volumes are assessed with pulmonary function tests rather than standard CT imaging.

Computed tomography creates cross-sectional images by measuring how X-rays are attenuated as they pass through tissues. The data are reconstructed into thin slices that can be viewed in axial planes and reformatted into other orientations. This capability makes CT excellent for showing differences in density, especially in bone and soft tissue, and it provides rapid, detailed images of the brain and spine to detect lesions, hemorrhage, or other pathology. Other choices describe techniques not primarily associated with CT: bone mineral density is measured with DEXA, joint spaces with contrast are typically evaluated with arthrography or MRI, and lung volumes are assessed with pulmonary function tests rather than standard CT imaging.