Common Terms on a CT Report

A CT report describes the bones of the spine in detail and uses specialised language to do so. The plain-English explanations below are a general guide to what these terms usually mean. They are not an interpretation of your own scan — only your doctor or specialist can explain what your particular report means for you, read alongside your symptoms and examination.

- Vertebral body — the main block-shaped part of each spinal bone that bears weight.

- Fracture — a break in a bone; a report may describe its exact location and pattern.

- Compression / wedge fracture — a vertebra that has partly collapsed, often becoming wedge-shaped.

- Osteophytes — bony spurs that form at the edges of joints and vertebrae with age.

- Facet joints — the small paired joints at the back of the spine; a report may note arthritis or enlargement.

- Sclerosis — an area of increased bone density, which can reflect old stress, healing or arthritis.

- Lytic / lucent lesion — an area where bone appears thinned or "eaten away," which needs careful interpretation.

- Spinal canal — the central channel housing the cord and nerves; the report may comment on its width.

- Neural foramina — the side exits for the nerve roots; may be described as narrowed.

- Spondylosis — general age-related wear and tear of the spine.

- Spondylolysis — a defect or stress break in a specific part of a vertebra (the pars interarticularis).

- Spondylolisthesis — one vertebra slipping forward relative to the one below.

- Fusion / bony bridging — bones that have joined together, either naturally or after surgery.

- Hardware / instrumentation — surgical screws, rods, cages or plates; a report may comment on their position.

- Hounsfield units (HU) — a measure of density on CT, sometimes used to gauge bone strength.

- Incidental finding — something seen by chance that is unrelated to the reason for the scan.

Many CT findings — spurs, mild arthritis, wear-and-tear change — are common with age and are not necessarily the cause of symptoms. Understanding the terms is meant to make your report less daunting and to help you discuss it with your specialist, who will interpret it in the context of your whole clinical picture rather than from the words alone.

• —Royal College of Radiologists — iRefer: Making the Best Use of Clinical Radiology
• —UK Health Security Agency — Ionising Radiation: Patient Dose Information
• —British Association of Spine Surgeons (BASS)

This information is for general patient education and is not a substitute for an individual consultation. Always seek personalised advice from a qualified spinal specialist.